Question

1. Why do organisms take food?
2. Distinguish between a parasite and a saprotrophy​

Answer 1

Answer:

Organisms need to take food to get energy and perform life processes. A living organism undergoes many life processes like nutrition, respiration, digestion, transportation, excretion, blood circulation, and reproduction. To perform all these life processes, the organism needs energy and nutrients.

The organism that grows on the body of another organism and derives nutrients from it is known as a parasite. The organism that obtains nutrients from the dead or decaying organic matter is called saprotroph

Answer 2

Answer:

1. Organisms need to take food to get energy and perform life processes. A living organism undergoes many life processes like nutrition, respiration, digestion, transportation, excretion, blood circulation, and reproduction. To perform all these life processes, the organism needs energy and nutrients.

2.Parasites are organisms that depend upon another organism (host) for food and cause harmful effects or dieseases to the host.

Examples: Cuscuta (Amarbel), mosquitoes and head lice.

Saprotrophs are orgnisms that obtain nutrition from dead and decaying organic matter.

Examples: Fungi and some bacteria.

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