Food Chains, Food Webs, Energy Flows, and Trophic Levels

Q. The sequence of transfer of matter and energy in the form of food from one organism to the other is called a food web.

1. True
2. False

Q.

With regard to various food chains operating in an ecosystem, man is a:

1. Consumer

2. Producer

3. Producer and consumer

4. Producer and decomposer

Q.

Define the trophic level.

Q.

Which trophic level is occupied by green plants?

Q. What is a food chain?

1. Sequence of transfer of matter and energy in the form of food from one organism to another.
2. Sequence of transfer of energy in the form of food from one organism to another.
3. Transfer of matter and energy in the form of food from one organism to another.
4. Sequence of transfer of matter and energy in the form of food from one organism to environment.

Q. What is a food web?

1. A group of organisms interlinked and interdependent
2. A group of food chains interlinked and interdependent
3. A group of living organisms interlinked and independent
4. Transfer of energy from environment to organisms

Q. Match the below given organisms with their respective trophic levels in this food chain.

a) Orca	1) 1st trophic level
b) Pacific cod	2) 2nd trophic level
c) Sea lion	3) 3rd trophic level
d) Shrimp	4) 4th trophic level

1. a - 1, b - 2, c - 3, d - 4
2. a - 1, b - 2, c - 3, d - 4
3. a - 4, b - 1, c - 3, d - 2
4. a - 2, b - 3, c - 4, d - 1

Q. Identify the correct option affter reading the following information thereof.

It is the foundation of the aquatic food web. Many marine creatures feed on it. It is the source of food directly or indirectly for all marine creatures. It also plays an important role in reducing greenhouse emissions through carbon sequestration.

1. Crustacean
2. Shrimp
3. Phytoplankton
4. Zooplankton

Q. Match the following to the terms of a food chain.

1. Secondary consumer
2. Tertiary consumer
3. Primary consumer
4. Decomposer

Q. Which of the following is/are the part of the first trophic level?

1. Producers
2. Herbivores
3. Carnivores
4. Decomposers