Question

(a) Name two biodegradable and two non-biodegradable wastes.
(b) Name the biotic and abiotic components of ecosystem.
(c) What is the role of decomposers in the ecosystem?
(d) If the plants get 10000 J of energy from the sun, how much energy will be available to tiger in the following food chain?
Plants → Deer → Tiger
​(e) A harmful chemical enters food chain comprising peacock, frog, grass, snake and grasshopper. Which of these organisms will have the maximum concentration of harmful chemical in its body? Why?

Answer 1

Answer:

two biodegradable wastes are apple core,paper

two non biodegradable wastes are plastic,iron

biotic components of ecosystem are grass, deer

abiotic components of ecosystem are air,water etc.

decomposers help to decompose the waste by taking compounds from the dead and decaying organic matter for their food making purposes

2500J

The correct order of food chain is:- Grasshopper->frog->snake->Peacock

Peacock will have maximum concentration of harmful chemicals in its body because it occupies highest tropic level. 

Answer 2

Biodegradable material contains food waste like vegetable and fruit peels, dead plants and animals, egg shells, chicken, garden waste paper materials, etc. Non-biodegradable things include of plastics, polystyrene, plastic, metals, and aluminum cans, toxic chemicals, paints, tyres, etc.