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Ecosystem: Structure and Function MCQ (Multiple Choice Questions and Answers) Q1. Ecosystem may be defined as 1.
A species along with environment
2.
Plants found in water
3.
Plants found on land
4.
Call plants and animals species along with environment
Answer:4 Q2. A pond / lake is 1.
A biome
2.
Unnatural ecosystem
3.
An artificial ecosystem
4.
Community of plants and animals only
Answer:2 Q3. Biome is 1.
The fauna of an ocean
2.
The Flora of land
3.
Communities of organisms interacting with one another
4.
The part of the earth and its atmosphere which is inhabited by living organisms
Answer:3 Q4. Grassland biome for its maintenance requires 1.
Periodic fire
2.
Intensive grazing
3.
Mowing
4.
All the above
Answer:4 Q6. Primary consumers in the detritus food chain are 1.
Herbivorous
2.
Bacteria and fungi
3.
Insect Larva, nematodes
4.
All the above
Answer:2 Q7. Total organic matter present in an ecosystem is called 1.
Biomass
2.
Biome
3.
Litter
4.
Food
Answer:1 Q8. Detritus food chain in comparison to grazing food chain is 1.
Generally longer
2.
Generally equal
3.
Generally shorter
4.
None of these
Answer:3 Q9. Putrefying organisms are 1.
Producer organisms
2.
Reducer organisms
3.
Consumer organisms
4.
Parasitic organisms
Answer:2 Q10. The most important organisms for an ecosystem are 1.
Herbivorous
2.
Carnivorous
3.
Green plants
4.
Protozoa
Answer:3 Q11. A peacock eats snakes which eat frog these eat hoppers which in turn thrive on leaves of the plants, the peacock is 1.
Primary consumer
2.
Secondary consumer
3.
Decomposer
4.
Apex of the food pyramid
Answer:4 Q12. A food chain is 1.
Group of organisms which eat the same type of food
2.
Animals eating animals eating
3.
Series of plants / animals which are interrelated in the form of organisms being eaten as food by the other
4.
None of these
Answer:3 Q13. A food chain consists of 1.
Producers
2.
Consumers
3.
Decomposers
4.
Producers and Consumers
Answer:4 Q14. Trophic leaves in a food chain are formed by 1.
Producers
2.
Consumers
3.
Decomposers
4.
All the above
Answer:4
Q15. Food chain always starts with 1.
Photosynthesis
2.
Respiration
3.
Nitrogen fixation
4.
Decay
Answer:1 Q16. Primary consumers are 1.
Green plants
2.
Herbivorous
3.
Carnivorous
4.
All the above
Answer:2 Q17. Secondary consumers are 1.
Green plants
2.
Herbivorous
3.
Carnivorous
4.
All the above
Answer:3 Q18. Which of the food chain directly depends on solar radiations? 1.
Predator
2.
Grazing
3.
Detritus
4.
None of these
Answer:2 Q19. Producers in any grazing food chain 1.
Feed the herbivorous
2.
Feed the carnivorous
3.
Clean the atmosphere
4.
Capture solar energy
Answer:4 Q20. Converters or transducers organisms in the food chain are called 1.
Herbivorous
2.
Carnivorous
3.
Decomposers
4.
Producers
Answer:4 Q21. Biological equilibrium is an equilibrium among the 1.
Producers
2.
Producers and consumers
3.
Decomposers
4.
Producers consumers and decomposers
Answer:4 Q22. Trophic level in a food chain which cycles the various materials between environment and living organisms is constituted by 1.
Producers
2.
Consumers
3.
Decomposers
4.
All the above
Answer:3 Q23. Food web is constituted by 1.
Various interlinked food chains in a community
2.
Relationship between animals and plants
3.
Relationship between organisms and their environment
4.
Relationship between animals, plants and microbes
Answer:1 Q24. Vegetation of a Geographic region with low rainfall, high temperature, loose and sandy soil is of the type called 1.
Grassland
2.
Scrub forest
3.
Xerophytic
4.
Evergreen tropical forest
Answer:3 Q25. Interesting real ecosystem, maximum energy is present in 1.
T3
2.
T2
3.
T1
4.
T4
Answer:3 Q26. In pond ecosystem the shape of pyramid of number is 1.
Linear
2.
Irregular
3.
Upright
4.
Inverted
Answer:3 Q27. In parasitic food chain,the pyramid of number is 1.
Linear
2.
Upright
3.
Inverted
4.
Inverted upright
Answer:3 Q28. In grassland ecosystem, the pyramid of biomass is 1.
Linear
2.
Upright
3.
Inverted
4.
Inverted upright
Answer:2 Q29. In pyramid of food, the producers occupy 1.
The base
2.
Position near the base
3.
Apex
4.
Position near Apex
Answer:1 Q30. Energy flow in an ecosystem is 1.
Uni directional
2.
Bidirectional
3.
Multidirectional
4.
All the above
Answer:1 Q31. Ascending trophic level in grazing food chain pyramid represents 1.
Gradual decrease in biomass from Apex to base
2.
Gradual decrease in biomass from producers to the tertiary consumers
3.
Gradual increase of the biomass from producers to the tertiary consumers
4.
No change in Biomass
Answer:2 Q32. Rate of storage of organic matter not used by heterotrophic is termed as 1.
Net productivity
2.
Net primary productivity
3.
Gross primary productivity
4.
Secondary productivity
Answer:2 Q33. Graphic representation of biomass relationship between the Producers and Consumers in an ecosystem is called 1.
Trophic level
2.
Ecological system
3.
Ecological Niche
4.
Ecological pyramid
Answer:4 Q34. If all green plants of earth are destroyed 1.
All plants shall die
2.
Only Herbivorous animals shall die
3.
All animals shall die ultimately
4.
Nothing shall happened to animals
Answer:3
Q35. The typical bio of an area having 50 to 100 CM of rainfall is 1.
Desert
2.
Grassland
3.
Deciduous forest
4.
Coniferous forest
Answer:2 Q36. Grassland of USA is referred to as 1.
Prairie
2.
Steppes
3.
Pampas
4.
Veldts
Answer:1 Q37. Plankton, nekton and benthos are not the components of one of the ecosystems which is 1.
Oceans
2.
Fresh water rivers
3.
Grassland
4.
Pond or lake
Answer:3 Q38. The food chain in which microorganisms break down the energy rich compounds synthesized by producers 1.
Predator food chain
2.
Parasitic food chain
3.
Detritus food chain
4.
None of these
Answer:3 Q39. When a big fish eats a small fish which eats water fleas ed by phytoplankton water fleas are 1.
Producers
2.
Primary consumers
3.
Secondary consumers
4.
Top consumers
Answer:2 Q40. Deciduous plants are those in which leaves fall 1.
Once in a year
2.
Twice twice in a year
3.
Many times a year
4.
None of the above
Answer:1 Q41. Which forests have maximum diversity? 1.
Sub tropical rainforests
2.
Coniferous forest
3.
Tropical forests
4.
Deciduous forest
Answer:3 Q42. Which one is not a factor of the abiotic environment? 1.
Sunlight
2.
Decomposers
3.
Water
4.
Temperature
Answer:2 Q43. Functional aspect of an ecosystem is Producers consumers and abiotic environment
Regulation of populations
Light, temperature, Oxygen and Carbon dioxide
Both 1 and 3
Answer:2 Q44. Which is true of a food chain? 1.
age of food from one trophic Level to the next higher one
2.
age of energy from one trophic Level to next higher one
3.
Dissipation of energy at successive trophic levels
4.
All the above
Answer:4 Q45. Food web 1.
Increases variety of food at each trophic level
2.
Delicately balances the inter relations amongst organisms
3.
Decreases variety of food but increases quantity of food at each trophic level
4.
Increases variety as well as quantity of food at each trophic level
Answer:2 1.
The group of inter-breeding individuals belonging to same species is:
(a)Habitat 2.
All populations within an ecosystem is:
(a) Habitat 3.
(b) population ( C ) C0mmunity (d) Individual
(b) population (c) community ( d ) Individual
The major regional ecological community of plants and animals are:
(a) Biomes 4.
(II) population (c) community (d) Ecosystem
A biological community together with the associated abiotic environment is:
(a) Biomes 5.
(b) population (c) community (d) Ecosystem
The basic role or profession of an organism in a community is called:(a) Synecology Niche (d) None 6.
The study of relationship of a single environment is called:
(a) Synecology
(h) Autecology (c) Niche (d) None
(b) Autecology (c)
Answers 7.
(b) 2. (c)3. (c)
4. (d) 5. (a) . 6. (b)
1.
The physical and biological condition under which an organism lives is called ________
2.
The group of inter-breeding individuals belonging to same species and living in a common geographic area is
5.
called _______ 3.
The major regional ecological community of plants and animals are called _______
4.
The study of relationship of a single population to its environment is called __________
5.
The study of relationship of different communities o group of population to their environment is called or community _______ ecology.
6.
The basic role or profession of an organism in a community is called ecological_________
7.
All non-cultivated plants and non-domesticated animals are included in ________
8.
The grass land used by the animals for grazing is called_____
9.
The application of science on rangeland for producing maximum number of grazing livestock regularly is called rangeland_____
Ans 1.environment 5. synecology
2. population 3. biomes 6. niche
7. wild life
10. management
1-A single bacterium in the soil interacts with (A) The water (B) Air (C) Particles of soil around it (D) All of the above
2-The region of earth, where life exists is known as (A) Atmosphere (B) Biosphere (C) Lithosphere (D) Hydrosphere
3-In the biosphere energy is received from (A) The Sun (B) The interior of the earth (C) Both (A) and (B) (D) Work
4. autecology 8. rangeland
4-The Biosphere consists of the following (A) Lakes (B) Soils (C) Solid sediments (D) All of the above
5-In which of the following form(s), the waster products are discharged into the biosphere? 6. (A) Gaseous 7.
(B) Liquid
8.
(C) Solid
9.
(D) All of the above
10. 11. 6-Ecosystem is smallest unit of 12. (A) Ionosphere 13. (B) Lithosphere 14. (C) Biosphere 15. (D) Mesosphere 16. 17. 7-Energy _____ in an Ecosystem. 18. (A) is released 19. (B) is absorbed 20. (C) flows 21. (D) None of the above 22. 23. 8-The set of ecosystems is called a 24. (A) Biome 25. (B) Climate 26. (C) Subsystem 27. (D) Structure 28. 29. 9-The following is an example of Terrestrial Biome 30. (A) Tropical rain forest
31. (B) Rivers 32. (C) Streams 33. (D) All of the above 34. 35. 10-Terrestrial biomes has a rapid exchange of 36. (A) Carbon dioxide 37. (B) Oxygen 38. (C) Water 39. (D) All of the above 40. 41. ANSWERS: 9.42. 1-(D), 2-(B), 3-(C), 4-(D), 5-(D), 6-(C), 7-(C), 8-(A), 9-(A), 10-(D)
11-The following is an example of lotic biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
12-The following is an example of lentic biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
13-The following is an example of marine biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
14-The smallest artificial ecosystems that have been known to sustain life over a long period of time are (A) Folsom bottles (B) Folsom pond (C) Folsom stream (D) None of the above
15-Ecosysems rely on the following major sources of energy (A) Sun (B) Chemical or Nuclear fuels (C) Both (A) and (B) (D) None of the above
16-The following type of ecosystems have a low productivity or capacity to do work (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
17-The following type of ecosystems have high energy input (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
18-Industrial parks are examples of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
19-A coastal estuary is an example of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems
(C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
20-Agriculture and Aquaculture are examples of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
ANSWERS: 11-(A), 12-(B), 13-(C), 14-(A), 15-(C), 16-(A), 17-(D), 18-(D), 19-(B), 20-(C) 21-The following type of ecosystem is of utmost importance from human point of view (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
22-In which of the following ecosystems large volumes of air are purified? (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
23-Every Ecosystem has ___ major component(s). (A) One (B) Two (C) Three (D) Four
24-The following is (are) Abiotic components of the ecosystem. (A) Soil (B) Carbon (C) Protein
(D) All of the above
25- Humus is _____ factor of an Ecosystem. (A) Physical (B) Chemical (C) Both (A) and (B) (D) None of the above
26-The following is (are) Producer(s) (A) Algae (B) Green plants (C) Photosynthetic bacteria (D) All of the above
27-The autotrops (A) are self nourishing organisms (B) derive energy from sunlight (C) make organic compounds from inorganic compounds (D) All of the above
28-Autotropic components are (A) Producers (B) Consumers (C) Decomposers (D) None of the above
29-______ are Primary consumers. (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
30-The following are dependent on others for food (A) Autotrops (B) Heterotrops (C) Both (A) and (B) (D) None of the above
ANSWERS: 21-(A), 22-(A), 23-(B), 24-(D), 25-(B), 26-(D), 27-(D), 28-(A), 29-(A), 30-(B) 31-______ are Secondary consumers. (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
32-The following have vegetarian as well as non-vegetarian diet (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
33-The following is(are) micro-consumers (A) Bacteria (B) Fungi (C) Flagellates (D) All of the above
34-Heterotropic components are (A) Producers (B) Consumers (C) Decomposers (D) None of the above
35-Grasshopper is a
(A) Herbivore (B) Carnivore (C) Omnivore (D) None of the above
36-Snake is a (A) Primary consumer (B) Secondary consumers (C) Tertiary consumers (D) Quaternary consumers
37-The following is a Secondary consumer (A) Goat (B) Lizard (C) Wolf (D) Lion
38-The simple inorganic substances released into environment by the decomposers and then reused by the ______ . (A) Producers (B) Consumers (C) Both (A) and (B) (D) None of the above
39-In a pond, insects and small fishes are (A) Primary Micro-consumers (B) Secondary consumers (C) Tertiary consumers (D) None of the above
40-In the process of Photosynthesis, plants use chlorophyll to transform sunlight into _____ energy. (A) Heat (B) Chemical
(C) Light (D) None of the above
ANSWERS: 31-(B), 32-(C), 33-(D), 34-(B), 35-(A), 36-(C), 37-(B), 38-(A), 39-(B), 40-(B) 41-Of the solar radiation that does reach the earth’s surface (incident energy), about ____ % is ultraviolet. (A) 10 (B) 20 (C) 30 (D) 40
42-The following is the correct grazing food chain (A) Grass – Grasshopper – Frog – Snake – Hawk (B) Grass – Frog – Grasshopper– Snake – Hawk (C) Grass – Grasshopper – Frog – Hawk – Snake (D) Grass – Grasshopper – Snake – Frog – Hawk
43-Carnvores are at (A) First trophic level (B) Second trophic level (C) Third trophic level (D) Fourth trophic level
44-Which of the following is not a type of Ecological pyramid? (A) The Pyramid of Numbers (B) The Pyramid of Biomass (C) The Pyramid of Energy (D) The Pyramid of Food
45-The Pyramid of Biomass is based on (A) The total dry weight (B) Calorific value (C) Total amount of living material
(D) All of the above
46-The following is (are) the cause(s) for Ecological succession. (A) Biotic causes (B) Climatic causes (C) Continuing causes (D) All of the above
47-The following succession are visible on sea-coasts (A) Sand dune succession (B) Bog succession (C) Succession in Oceans (D) All of the above
48-In Desert Ecosystem, Shrubs or Bushes are (A) Producer organisms (B) Consumers (C) Decomposers (D) None of the above
49-An estuary (A) is rich in nutrients (B) usually an abundance of fish (C) is area where river the sea/ocean (D) all of the above
50-The following is not a type of Ecosystem. (A) Grassland Ecosystem (B) Aquatic Ecosystem (C) Desert Ecosystem (D) Mountain Ecosystem ANSWERS:
41-(A), 42-(A), 43-(C), 44-(D), 45-(D), 46-(D), 47-(A), 48-(A), 49-(D), 50-(D)
A species along with environment
2.
Plants found in water
3.
Plants found on land
4.
Call plants and animals species along with environment
Answer:4 Q2. A pond / lake is 1.
A biome
2.
Unnatural ecosystem
3.
An artificial ecosystem
4.
Community of plants and animals only
Answer:2 Q3. Biome is 1.
The fauna of an ocean
2.
The Flora of land
3.
Communities of organisms interacting with one another
4.
The part of the earth and its atmosphere which is inhabited by living organisms
Answer:3 Q4. Grassland biome for its maintenance requires 1.
Periodic fire
2.
Intensive grazing
3.
Mowing
4.
All the above
Answer:4 Q6. Primary consumers in the detritus food chain are 1.
Herbivorous
2.
Bacteria and fungi
3.
Insect Larva, nematodes
4.
All the above
Answer:2 Q7. Total organic matter present in an ecosystem is called 1.
Biomass
2.
Biome
3.
Litter
4.
Food
Answer:1 Q8. Detritus food chain in comparison to grazing food chain is 1.
Generally longer
2.
Generally equal
3.
Generally shorter
4.
None of these
Answer:3 Q9. Putrefying organisms are 1.
Producer organisms
2.
Reducer organisms
3.
Consumer organisms
4.
Parasitic organisms
Answer:2 Q10. The most important organisms for an ecosystem are 1.
Herbivorous
2.
Carnivorous
3.
Green plants
4.
Protozoa
Answer:3 Q11. A peacock eats snakes which eat frog these eat hoppers which in turn thrive on leaves of the plants, the peacock is 1.
Primary consumer
2.
Secondary consumer
3.
Decomposer
4.
Apex of the food pyramid
Answer:4 Q12. A food chain is 1.
Group of organisms which eat the same type of food
2.
Animals eating animals eating
3.
Series of plants / animals which are interrelated in the form of organisms being eaten as food by the other
4.
None of these
Answer:3 Q13. A food chain consists of 1.
Producers
2.
Consumers
3.
Decomposers
4.
Producers and Consumers
Answer:4 Q14. Trophic leaves in a food chain are formed by 1.
Producers
2.
Consumers
3.
Decomposers
4.
All the above
Answer:4
Q15. Food chain always starts with 1.
Photosynthesis
2.
Respiration
3.
Nitrogen fixation
4.
Decay
Answer:1 Q16. Primary consumers are 1.
Green plants
2.
Herbivorous
3.
Carnivorous
4.
All the above
Answer:2 Q17. Secondary consumers are 1.
Green plants
2.
Herbivorous
3.
Carnivorous
4.
All the above
Answer:3 Q18. Which of the food chain directly depends on solar radiations? 1.
Predator
2.
Grazing
3.
Detritus
4.
None of these
Answer:2 Q19. Producers in any grazing food chain 1.
Feed the herbivorous
2.
Feed the carnivorous
3.
Clean the atmosphere
4.
Capture solar energy
Answer:4 Q20. Converters or transducers organisms in the food chain are called 1.
Herbivorous
2.
Carnivorous
3.
Decomposers
4.
Producers
Answer:4 Q21. Biological equilibrium is an equilibrium among the 1.
Producers
2.
Producers and consumers
3.
Decomposers
4.
Producers consumers and decomposers
Answer:4 Q22. Trophic level in a food chain which cycles the various materials between environment and living organisms is constituted by 1.
Producers
2.
Consumers
3.
Decomposers
4.
All the above
Answer:3 Q23. Food web is constituted by 1.
Various interlinked food chains in a community
2.
Relationship between animals and plants
3.
Relationship between organisms and their environment
4.
Relationship between animals, plants and microbes
Answer:1 Q24. Vegetation of a Geographic region with low rainfall, high temperature, loose and sandy soil is of the type called 1.
Grassland
2.
Scrub forest
3.
Xerophytic
4.
Evergreen tropical forest
Answer:3 Q25. Interesting real ecosystem, maximum energy is present in 1.
T3
2.
T2
3.
T1
4.
T4
Answer:3 Q26. In pond ecosystem the shape of pyramid of number is 1.
Linear
2.
Irregular
3.
Upright
4.
Inverted
Answer:3 Q27. In parasitic food chain,the pyramid of number is 1.
Linear
2.
Upright
3.
Inverted
4.
Inverted upright
Answer:3 Q28. In grassland ecosystem, the pyramid of biomass is 1.
Linear
2.
Upright
3.
Inverted
4.
Inverted upright
Answer:2 Q29. In pyramid of food, the producers occupy 1.
The base
2.
Position near the base
3.
Apex
4.
Position near Apex
Answer:1 Q30. Energy flow in an ecosystem is 1.
Uni directional
2.
Bidirectional
3.
Multidirectional
4.
All the above
Answer:1 Q31. Ascending trophic level in grazing food chain pyramid represents 1.
Gradual decrease in biomass from Apex to base
2.
Gradual decrease in biomass from producers to the tertiary consumers
3.
Gradual increase of the biomass from producers to the tertiary consumers
4.
No change in Biomass
Answer:2 Q32. Rate of storage of organic matter not used by heterotrophic is termed as 1.
Net productivity
2.
Net primary productivity
3.
Gross primary productivity
4.
Secondary productivity
Answer:2 Q33. Graphic representation of biomass relationship between the Producers and Consumers in an ecosystem is called 1.
Trophic level
2.
Ecological system
3.
Ecological Niche
4.
Ecological pyramid
Answer:4 Q34. If all green plants of earth are destroyed 1.
All plants shall die
2.
Only Herbivorous animals shall die
3.
All animals shall die ultimately
4.
Nothing shall happened to animals
Answer:3
Q35. The typical bio of an area having 50 to 100 CM of rainfall is 1.
Desert
2.
Grassland
3.
Deciduous forest
4.
Coniferous forest
Answer:2 Q36. Grassland of USA is referred to as 1.
Prairie
2.
Steppes
3.
Pampas
4.
Veldts
Answer:1 Q37. Plankton, nekton and benthos are not the components of one of the ecosystems which is 1.
Oceans
2.
Fresh water rivers
3.
Grassland
4.
Pond or lake
Answer:3 Q38. The food chain in which microorganisms break down the energy rich compounds synthesized by producers 1.
Predator food chain
2.
Parasitic food chain
3.
Detritus food chain
4.
None of these
Answer:3 Q39. When a big fish eats a small fish which eats water fleas ed by phytoplankton water fleas are 1.
Producers
2.
Primary consumers
3.
Secondary consumers
4.
Top consumers
Answer:2 Q40. Deciduous plants are those in which leaves fall 1.
Once in a year
2.
Twice twice in a year
3.
Many times a year
4.
None of the above
Answer:1 Q41. Which forests have maximum diversity? 1.
Sub tropical rainforests
2.
Coniferous forest
3.
Tropical forests
4.
Deciduous forest
Answer:3 Q42. Which one is not a factor of the abiotic environment? 1.
Sunlight
2.
Decomposers
3.
Water
4.
Temperature
Answer:2 Q43. Functional aspect of an ecosystem is Producers consumers and abiotic environment
Regulation of populations
Light, temperature, Oxygen and Carbon dioxide
Both 1 and 3
Answer:2 Q44. Which is true of a food chain? 1.
age of food from one trophic Level to the next higher one
2.
age of energy from one trophic Level to next higher one
3.
Dissipation of energy at successive trophic levels
4.
All the above
Answer:4 Q45. Food web 1.
Increases variety of food at each trophic level
2.
Delicately balances the inter relations amongst organisms
3.
Decreases variety of food but increases quantity of food at each trophic level
4.
Increases variety as well as quantity of food at each trophic level
Answer:2 1.
The group of inter-breeding individuals belonging to same species is:
(a)Habitat 2.
All populations within an ecosystem is:
(a) Habitat 3.
(b) population ( C ) C0mmunity (d) Individual
(b) population (c) community ( d ) Individual
The major regional ecological community of plants and animals are:
(a) Biomes 4.
(II) population (c) community (d) Ecosystem
A biological community together with the associated abiotic environment is:
(a) Biomes 5.
(b) population (c) community (d) Ecosystem
The basic role or profession of an organism in a community is called:(a) Synecology Niche (d) None 6.
The study of relationship of a single environment is called:
(a) Synecology
(h) Autecology (c) Niche (d) None
(b) Autecology (c)
Answers 7.
(b) 2. (c)3. (c)
4. (d) 5. (a) . 6. (b)
1.
The physical and biological condition under which an organism lives is called ________
2.
The group of inter-breeding individuals belonging to same species and living in a common geographic area is
5.
called _______ 3.
The major regional ecological community of plants and animals are called _______
4.
The study of relationship of a single population to its environment is called __________
5.
The study of relationship of different communities o group of population to their environment is called or community _______ ecology.
6.
The basic role or profession of an organism in a community is called ecological_________
7.
All non-cultivated plants and non-domesticated animals are included in ________
8.
The grass land used by the animals for grazing is called_____
9.
The application of science on rangeland for producing maximum number of grazing livestock regularly is called rangeland_____
Ans 1.environment 5. synecology
2. population 3. biomes 6. niche
7. wild life
10. management
1-A single bacterium in the soil interacts with (A) The water (B) Air (C) Particles of soil around it (D) All of the above
2-The region of earth, where life exists is known as (A) Atmosphere (B) Biosphere (C) Lithosphere (D) Hydrosphere
3-In the biosphere energy is received from (A) The Sun (B) The interior of the earth (C) Both (A) and (B) (D) Work
4. autecology 8. rangeland
4-The Biosphere consists of the following (A) Lakes (B) Soils (C) Solid sediments (D) All of the above
5-In which of the following form(s), the waster products are discharged into the biosphere? 6. (A) Gaseous 7.
(B) Liquid
8.
(C) Solid
9.
(D) All of the above
10. 11. 6-Ecosystem is smallest unit of 12. (A) Ionosphere 13. (B) Lithosphere 14. (C) Biosphere 15. (D) Mesosphere 16. 17. 7-Energy _____ in an Ecosystem. 18. (A) is released 19. (B) is absorbed 20. (C) flows 21. (D) None of the above 22. 23. 8-The set of ecosystems is called a 24. (A) Biome 25. (B) Climate 26. (C) Subsystem 27. (D) Structure 28. 29. 9-The following is an example of Terrestrial Biome 30. (A) Tropical rain forest
31. (B) Rivers 32. (C) Streams 33. (D) All of the above 34. 35. 10-Terrestrial biomes has a rapid exchange of 36. (A) Carbon dioxide 37. (B) Oxygen 38. (C) Water 39. (D) All of the above 40. 41. ANSWERS: 9.42. 1-(D), 2-(B), 3-(C), 4-(D), 5-(D), 6-(C), 7-(C), 8-(A), 9-(A), 10-(D)
11-The following is an example of lotic biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
12-The following is an example of lentic biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
13-The following is an example of marine biome (A) Rivers (B) Lakes (C) Oceans (D) All of the above
14-The smallest artificial ecosystems that have been known to sustain life over a long period of time are (A) Folsom bottles (B) Folsom pond (C) Folsom stream (D) None of the above
15-Ecosysems rely on the following major sources of energy (A) Sun (B) Chemical or Nuclear fuels (C) Both (A) and (B) (D) None of the above
16-The following type of ecosystems have a low productivity or capacity to do work (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
17-The following type of ecosystems have high energy input (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
18-Industrial parks are examples of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
19-A coastal estuary is an example of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems
(C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
20-Agriculture and Aquaculture are examples of (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
ANSWERS: 11-(A), 12-(B), 13-(C), 14-(A), 15-(C), 16-(A), 17-(D), 18-(D), 19-(B), 20-(C) 21-The following type of ecosystem is of utmost importance from human point of view (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
22-In which of the following ecosystems large volumes of air are purified? (A) Unsubsidized Natural Solar powered ecosystems (B) Naturally Subsidized Solar powered ecosystems (C) Man Subsidized Solar powered ecosystems (D) Fuel powered ecosystems
23-Every Ecosystem has ___ major component(s). (A) One (B) Two (C) Three (D) Four
24-The following is (are) Abiotic components of the ecosystem. (A) Soil (B) Carbon (C) Protein
(D) All of the above
25- Humus is _____ factor of an Ecosystem. (A) Physical (B) Chemical (C) Both (A) and (B) (D) None of the above
26-The following is (are) Producer(s) (A) Algae (B) Green plants (C) Photosynthetic bacteria (D) All of the above
27-The autotrops (A) are self nourishing organisms (B) derive energy from sunlight (C) make organic compounds from inorganic compounds (D) All of the above
28-Autotropic components are (A) Producers (B) Consumers (C) Decomposers (D) None of the above
29-______ are Primary consumers. (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
30-The following are dependent on others for food (A) Autotrops (B) Heterotrops (C) Both (A) and (B) (D) None of the above
ANSWERS: 21-(A), 22-(A), 23-(B), 24-(D), 25-(B), 26-(D), 27-(D), 28-(A), 29-(A), 30-(B) 31-______ are Secondary consumers. (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
32-The following have vegetarian as well as non-vegetarian diet (A) Herbivores (B) Carnivores (C) Omnivores (D) All of the above
33-The following is(are) micro-consumers (A) Bacteria (B) Fungi (C) Flagellates (D) All of the above
34-Heterotropic components are (A) Producers (B) Consumers (C) Decomposers (D) None of the above
35-Grasshopper is a
(A) Herbivore (B) Carnivore (C) Omnivore (D) None of the above
36-Snake is a (A) Primary consumer (B) Secondary consumers (C) Tertiary consumers (D) Quaternary consumers
37-The following is a Secondary consumer (A) Goat (B) Lizard (C) Wolf (D) Lion
38-The simple inorganic substances released into environment by the decomposers and then reused by the ______ . (A) Producers (B) Consumers (C) Both (A) and (B) (D) None of the above
39-In a pond, insects and small fishes are (A) Primary Micro-consumers (B) Secondary consumers (C) Tertiary consumers (D) None of the above
40-In the process of Photosynthesis, plants use chlorophyll to transform sunlight into _____ energy. (A) Heat (B) Chemical
(C) Light (D) None of the above
ANSWERS: 31-(B), 32-(C), 33-(D), 34-(B), 35-(A), 36-(C), 37-(B), 38-(A), 39-(B), 40-(B) 41-Of the solar radiation that does reach the earth’s surface (incident energy), about ____ % is ultraviolet. (A) 10 (B) 20 (C) 30 (D) 40
42-The following is the correct grazing food chain (A) Grass – Grasshopper – Frog – Snake – Hawk (B) Grass – Frog – Grasshopper– Snake – Hawk (C) Grass – Grasshopper – Frog – Hawk – Snake (D) Grass – Grasshopper – Snake – Frog – Hawk
43-Carnvores are at (A) First trophic level (B) Second trophic level (C) Third trophic level (D) Fourth trophic level
44-Which of the following is not a type of Ecological pyramid? (A) The Pyramid of Numbers (B) The Pyramid of Biomass (C) The Pyramid of Energy (D) The Pyramid of Food
45-The Pyramid of Biomass is based on (A) The total dry weight (B) Calorific value (C) Total amount of living material
(D) All of the above
46-The following is (are) the cause(s) for Ecological succession. (A) Biotic causes (B) Climatic causes (C) Continuing causes (D) All of the above
47-The following succession are visible on sea-coasts (A) Sand dune succession (B) Bog succession (C) Succession in Oceans (D) All of the above
48-In Desert Ecosystem, Shrubs or Bushes are (A) Producer organisms (B) Consumers (C) Decomposers (D) None of the above
49-An estuary (A) is rich in nutrients (B) usually an abundance of fish (C) is area where river the sea/ocean (D) all of the above
50-The following is not a type of Ecosystem. (A) Grassland Ecosystem (B) Aquatic Ecosystem (C) Desert Ecosystem (D) Mountain Ecosystem ANSWERS:
41-(A), 42-(A), 43-(C), 44-(D), 45-(D), 46-(D), 47-(A), 48-(A), 49-(D), 50-(D)
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