Question

31. ........... are the primary producers
(A) Plants
(B) Herbivores
(C) Carnivores
(D) Decomposer
32. Grass-hopper is eaten by Frog which is further caten hy snake. Gras hopper, Frog and snake are ...
I) Producers primary consumers and secondary consumer respectively
(B) Primary, secondary and tertiary consumer respectively
(C) Secondary. tertiary and super-tertiary consumer respectively
(D) None of these
33. The energy flows from primary producers to primary consumers, from primary to secondary and so on.
This is known as
(A) Food chain
(B) Food web
(c) Both (a) and (b)
(D) None
34. The flow of energy is always in an ecosystem.
(A) uni-directional
(B) bi-directional
(C) multi-directional
EN​

Answer 1

Answer:

A) Herbivores B) none of these c)Explanation: The organisms in each trophic level transfer 10% of the recieved total energy to the organisms of the next trophic level. The remaining energy is mostly lost in the form of heat. Producers recieve 100% energy and give 10% of it to primary consumer. 4) The flow of energy in the ecosystem is unidirectional because the energy lost as heat from the living organisms of a food chain cannot be reused by plants in photosynthesis. During the transfer of energy through successive trophic levels in an ecosystem, there is a loss of energy all along the path.