Question

Which of the following is a difference between food chains and food webs?

Answer 1

Both food chains and food webs contain plants and animals so it is not A.

Food chains separate by trophic level not food webs so it is not B

***Food chains show energy flow by each trophic level and food webs do not therefore it is C***

Answer 2

Answer:

Option D, Food chains are linear, while food webs are complex.

Explanation:

A food chain is a linear organization in which the producer lies at the first stage followed by consumer organisms lying at primary, secondary and tertiary stages of food chain.

While in a food web, there can be several interlinked food chains or there can be an organism within the food web which is part of several food chains at an instance. Hence, the linearity of organization cannot be retained in case of food web thereby making it more complex than the food chain.  

Hence, option D is correct.