Question

Which of the following statement is incorrect for the given food web?​

• A. A decrease in population of frog will cause an increase in the population of insect.
• B. There are three food chains in this food web.
• C. The snake is both a predator and prey.
• D. There is one producer and one omnivorous animal in the given food web.

Answer 1

The correct option is B There are three food chains in this food web.

• In a given food web, snake is a predator of sparrow, frog and prey of an eagle.
• There is one producer i.e., plant and one omnivorous animal i.e., sparrow in the given food web.
• A decrease in population of frog will increase the population of insect as number of frogs feeding on insects are less.
• In a given food web, there are five food chains as follows. 1) Plant -->Insect --> Sparrow --> Snake --> Eagle 2) Plant -->Insect --> Frog --> Snake --> Eagle 3) Plant --> Sparrow --> Eagle 4) Plant --> Insect --> Sparrow --> Eagle 5) Plant --> Sparrow --> Snake --> Eagle