Ecosystem MCQ Questions & Answers in Botany

1. The pyramid which cannot be inverted in a stable ecosystem is that of

A Biomass

B Number

C Energy

D All the above

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2. In a biotic community, the most important factor for survival of an animal is

A day length

B soil moisture

C green food

D predators

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3. Barophilic prokaryotes:

A grow and multiply in very deep marine sediments

B occur in water containing high concentrations of barium hydroxide

C readily grow and divide in sea water enriched in any soluble salt of barium

D grow slowly in highly alkaline frozen lakes at high altitudes

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4. During ecological succession:

A the establishment of a new biotic community is very fast in its primary phase

B the numbers and types of animals remain constant

C the changes lead to a community that is in near equilibrium with the environment and is called pioneer community

D the gradual and predictable change in species composition occurs in a given area

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5. Which one of the following is not a function of an ecosystem?

A Energy flow

B Decomposition

C Productivity

D Stratification

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6. Pick up the correct food chain

A Grass → Chamelion → Insect → Bird

B Grass → Fox → Rabbit → Bird

C Phytoplankton → Zooplankton → Fish

D Fallen leaves → Bacteria → Insect larvae

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7. Upper part of sea/aquatic ecosystem contains

A plankton

B nekton

C plankton and nekton

D benthos

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8. In an ecosystem the rate of production of organic matter during photosynthesis is termed as:

A Gross primary productivity

B Secondary productivity

C Net productivity

D Net primary productivity

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9. What type of ecological pyramid would be obtained with the following data?
Secondary consumer : 120 $$g$$
Primary consumer : 60 $$g$$
Primary producer : 10 $$g$$

A Inverted pyramid of biomass

B Pyramid of energy

C Upright pyramid of biomass

D Upright pyramid of numbers

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10. What is true of ecosystem?

A Primary consumers are least dependent upon producers

B Primary consumers out-number producers

C Producers are more than primary consumers

D Secondary consumers are the largest and most powerful

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1 2 3 4 5 6 7 8

1. The pyramid which cannot be inverted in a stable ecosystem is that of

2. In a biotic community, the most important factor for survival of an animal is

3. Barophilic prokaryotes:

4. During ecological succession:

5. Which one of the following is not a function of an ecosystem?

6. Pick up the correct food chain

7. Upper part of sea/aquatic ecosystem contains

8. In an ecosystem the rate of production of organic matter during photosynthesis is termed as:

9. What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 $$g$$ Primary consumer : 60 $$g$$ Primary producer : 10 $$g$$

10. What is true of ecosystem?

Practice More MCQ Question on Biology Section

9. What type of ecological pyramid would be obtained with the following data?
Secondary consumer : 120 $$g$$
Primary consumer : 60 $$g$$
Primary producer : 10 $$g$$