Food Chain

Q. The wild animals that hunt other animals for food are called predators. Which amongst the following you think might be predators?

1. Tigers
2. Camel
3. Cow
4. Oxen

Q. In which stage of its life, the frog lives as a herbivore?

1. Eggs
2. Tadpole
3. Adult
4. None of the above

Q.

Assertion (A): Organism uses up to 90% of its food energy for its life processes.
Reason (R): 10% of energy goes into new body cells and will be available to the next animal when it gets eaten.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true but R is NOT the correct explanation of A.

3. A is true but R is false.

4. Both A and R are false.

Q. ________ percentage of energy is available to be passed on to the next organism in a food chain.

1. 25
2. 70
3. 55
4. 10

Q. Explain in detail the inter-relationship between the food chain and food web.

Q.

Assertion (A): Organism uses up to 90% of its food energy for its life processes.
Reason (R): 10% of energy goes into new body cells and will be available to the next animal when it gets eaten.

1. Both A and R are false.

2. Both A and R are true and R is the correct explanation of A.

3. Both A and R are true but R is NOT the correct explanation of A.

4. A is true but R is false.

Q. Match the items of column I with those of column II.

Q. In a food chain, form the first trophic level and form the last trophic level.

1. producers
2. consumers
3. decomposers
4. heterotrophs

Q. Which of the following food chain correctly represents the flow of energy in an ecosystem?

1. Frog $\to$ Eagle $\to$ Snake
2. Grass $\to$ Snake $\to$ Frog
3. Snake $\to$ Leaf $\to$ Frog
4. Grass $\to$ Hen $\to$ Human

Q. What are biodegradable wastes?

Q. Which of the following creatures would be considered as a topmost predator?

1. Tiger
2. Fox
3. Snake
4. Antelope