PREY & PREDATORS

(A) : The series of organisms eating one another form the food chain. (R) : A food chain begins when a predator eats on a prey.

Assertion : Predatos maintain species diversity. Reason : Predators reduce the intensity of competition among competing prey species.

Parasitism | | Predation

Interactions -Predation and Parasitism

Assertion: Biological control methods of agricultural pest management programmes are based on predation. Reason: Predators maintain prey populations.

Read the following statements and find out the incorrect statements. a. Predation is nature's way of transfering to higher trophic levels the energy fixed by plants b. Prey keep predator population under control c. Biological control methods adopted in agricultural pest control are base on thte abilty of the prey to regulate the predator population d. Predators help in maintaining species diversity in a community by inducing the intensity of competition among competing prey species

Assertion: Predators in nature are 'prudent'. Reason: If a predator is too efficient and overexploits its prey, then the prey might become extinct and following it, the predator will also become extinct for lack of food.

Read the following statements w.r.t predation and select the two wrong statement (i) Predators help in maintaining species diversity in a community. (ii) Predators in nature are prudent . (iii) Predators cannot reduce the intensity of competition among competing prey species . (iv) Predators do not act as conduits for energy transfer across trophic levels .