Question

Which of the following are true about any ecosystem?
(a) Isolated system
(b) Self regulated
(c) Unidirectional energy flow
(d) Structural and functional unit of nature

Choose the correct option:

• A. a, c, and d
• B. b, c, and d
• C. a, b, and c
• D. a, b, c, and d

Answer 1

The correct option is B b, c, and d

Ecosystem is an open system where exchange of both energy and matter takes place. It is self-regulated and according to E.P. Odum, father of Ecology, it is the smallest structural and functional unit of nature. It consists of both the biotic and abiotic factors which interact with each other in such a way that the energy which is trapped at the producers forming the first trophic level moves in a single direction towards the top consumers. Since statement (a) refers to isolated system which in incorrect, hence out of the given above, only option b is correct, that is statements (b), (c) and (d).