English Medium इयत्ता १० - CBSE Question Bank Solutions

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?

One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator

Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy

One of the following is a micro-consumer. This one is :
(a) ant
(b) lice
(c) fungi
(d) mosquito

In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass

The sea water contains water beetles, tadpole, fish and weeds. 

1. Write a food chain comprising all the given organisms.
2. Which organisms in the food chain are (i) herbivore, and (ii) carnivores?
3. Which organisms are (i) predators, and (ii) prey?
4. Which organisms can trap solar energy to make food?
5. Which organism is a secondary consumer?

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms in the food chain are herbivore, and carnivores?

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms are (i) predators, and (ii) prey?

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms can trap solar energy to make food?

The sea water contains water beetles, tadpole, fish and weeds.

Which organism is a secondary consumer?

1. Explain how plants provide food for bees.
2. How do bees provide food for humans?
3. How does this food chain differ from a usual food chain involving human such as: plants → goat → human?
4. Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.

The following is a food chain that ends with human :
plants → bee → human

How do bees provide food for humans?

The following is a food chain that ends with human :

How does this food chain differ form a usual food chain involving human such as : plants → goat → human?

The following is a food chain that ends with human :

Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.

1. Name one phytoplankton. 
2. Name two zooplanktons. 
3. What could be Х? 
4. Name the organism which Y could be. 
5. Which organism in the above food chain is a (i) primary consumer, and (ii) tertiary consumer?

A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Name two zooplanktons.

A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

What could be X?

A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Name the organism which Y could be.

A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?

1. Write a food chain which provides food to the lion in this case.
2. Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
3. Which other animal in the forest could have been in place of lion?
4. How does the above food chain differ from the food chain such as: plants → goat → man?