Flow of Energy

Q.

How do green plants prepare their food?

Q.

Green plants convert solar energy to ________ energy by the process of photosynthesis.

1. mechanical

2. electrical

3. solar

4. chemical

Q. In the given food chain, the amount of energy available to the plant is 200 J. What amount of energy will be available to the tiger?
Plant → Deer → Tiger

1. 2000 J
2. 20 J
3. 200 J
4. 2 J

Q.

Assertion [A]: The number of trophic levels in the grazing food chain is restricted.

Reason [R]: Energy decreases from lower trophic level to the higher trophic level

1. Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.

2. Both statements 1 and 2 are correct and statement 2 is not the explanation of statement 1.

3. Both statements 1 and 2 are incorrect.

4. Statement 1 is correct and statement 2 is incorrect.

Q.

How do green plants produce food? Where do they get their energy from?

Q.

The direction of the flow of energy in a food chain is

1. sun to carnivores

2. decomposers to herbivores

3. decomposers to producers

4. carnivores to herbivores

Q.

In the following food chain, which organisms will have the least energy?

Grass→Grasshopper→Frog→Snake→Eagle

1. Grass

2. Grasshopper

3. Snake

4. Eagle

Q.

Plants can make food themselves.

1. True

2. False

Q.

The energy transferred from one trophic level to another

1. Increase

2. Decreases

3. Remains the same

4. None

Q. Organisms that feed on both plants and animals are called ____.

1. carnivores

2. herbivores

3. parasites

4. omnivores

Q.

A food chain is a series of relationships between members of an ecosystem so that _________ can be transferred between them.

1. light

2. energy

3. water

4. food

Q.

Which term is used for many interconnected food chains?

Q. A group of similar individuals living in a given area that have the potential to interbreed is called

1. community
2. organism
3. population

Q.

Decomposers eat dead animals for food.

1. True
2. False

Q. Give reason and explain. Energy flow in an ecosystem is always unidirectional and nutrients are recycled. Also, give examples to prove the given statement.

Q. The type of ecological interaction between two organisms in which one is benefited, and the other is neither benefited nor harmed is _______.

1. Competition
2. Commensalism
3. Mutualism
4. Predation

Q.

This is an artificial ecosystem.

1. Pond

2. Crop field

3. Lake

4. Forest

Q.

Plants that perform photosynthesis are also called ____

1. Herbivores

2. Consumers

3. Decomposers

4. Producers

Q.

Give one word for linking together of living organisms in an ecosystem based on their nutritional requirement.

Q.

Explain the biotic components of an ecosystem.

Q. Is predation a symbiotic relationship?

Q.

All parts of land plants cannot be eaten by herbivores.

1. True
2. False

Q.

Organisms that feed on primary consumers are called

1. secondary consumers

2. tertiary consumers

3. decomposers

4. producers

Q. What are primary consumers and secondary consumers?
How do they help with the ecosystem?

Q.

Consumers that feed on carnivores are called _____.

1. Primary consumers

2. Tertiary consumers

3. Secondary consumers

4. Quaternary consumers

Q.

Regarding assertion and reason, choose the correct statement
Assertion [A]: Marine ecosystems have lesser trophic levels than terrestrial ecosystems.
Reason [R]: Most of the phytoplankton is available for consumption and assimilation by primary consumers in aquatic ecosystems.

1. A is false and R is true
2. Both A and R are true and R explains A
3. Both A and R are true R does not explain A
4. A is true and R is false

Q. Is predation a symbiotic relationship?