Food Web Interconnections

Q. Do you think there is any such limitation in the trophic levels of a detritus food chain?

Q. Which of the following organisms will occupy the fourth trophic level in a grazing food chain?

1. Carnivores
2. Herbivores
3. Both A and B
4. Producers

Q. ______________ in the food chain forms the food web.

1. Only plants
2. Only animals
3. Only carnivores
4. Organisms linked

Q. Regarding assertion and reason, choose the right option.
Assertion [A]: Food webs are formed because of complex feeding relationships between organisms.
Reason [R]: Most organisms feed at one or more trophic levels in a food chain.

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

Q. Assertion: A network of food chain existing together in an ecosystem is known as a food web
Reason: An animals like kite cannot be a part of a food web.

1. If both assertion and reason are true and the reason is the correct explanation of the assertion.
2. If both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. If the assertion is a true statement, but the reason is false.
4. If both assertion and reason are false statements.

Q.

Assertion : In a food chain members of successive higher levels are fewer in number.

Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

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

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

3. Statement A is correct and statement R is incorrect.

4. Both statements A and R are incorrect.

Q. If a single plant species is removed from a food web, then most likely

1. An animal species will fill the unoccupied niche
2. Herbivores will die
3. Dependent herbivores will have to find new food sources
4. Carnivores will be affected by the loss

Q. Assertion : A network of food chains existing together in an ecosystem is known as food web.

Reason : An animal like kite cannot be apart of food web.

1. If both assertion and reason are true and reason is correct explanation of assertion.
2. If both assertion and reason are true but reason is not the correct explanation of assertion.
3. If assertion is true but reason is false.
4. If both assertion and reason and false.

Q. Consider the following statement about the food chain.
(I) Removal of most carnivores resulted in increased deer population
(II) If 80% of top consumers are removed from an area, vegetation growth increases
(III) The length of food chain is limited to few trophic levels due to energy restriction
(IV) The trophic levels in a food chain can vary from 2-8

Choose the option which mentions the correct statements:

1. I and II
2. II and III
3. II and IV
4. I and III

Q. Construct (b) a short food chain, ending with man.​

Q. The balance between producers and consumers is maintained by _____.

1. food web
2. food chain
3. food cycle
4. scavengers

Q. If a single plant species is removed from a food web, then most likely

1. An animal species will fill the unoccupied niche
2. Herbivores will die
3. Dependent herbivores will have to find new food sources
4. Carnivores will be affected by the loss

Q. Regarding assertion and reason, choose the right option.
Assertion [A]: Food webs are formed because of complex feeding relationships between organisms.
Reason [R]: Most organisms feed at one or more trophic levels in a food chain.

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

Q. Identify the likely organisms (I), (II), (III), and (IV) in the food web

1. I - Deer, II - Rabbit, III - Frog, IV - Mouse
2. I - Dog, II - Squirrel, III - Bat, IV - Deer
3. I - Rat, II - Dog, III - Tortoise, IV - Crow
4. I - Squirrel, II - Cat, III - Rat, IV - Pigeon