| Read the following statements about functioning of an ecosystem and identify the correct set of statements, |
| 1. The energy in the food chain flows in a cydic manner. |
| 2. The pyramid of the numbers is always upright in a food chain. |
| 3. The pyramid of energy can be upright as well as inverted. |
| 4. In commensalism type of relationship both organisms are benefitted. |
| Which of the statement(s) given above is/are correct? |
A) 1, 2 and 3
B) 1 and 4
C) Only 4
D) None of these
Correct Answer: D
Solution :
[d] In a food chain there is unidirectional flow of energy fro- lower trophic level to higher trophic level but minerals flow cyclic manner. The pyramid of the numbers show relationship between total number of members at various trophic levels in a food chain. In commensalism type of relationship one member s benefitted and the other is neither benefitted nor harmed Pyramid of numbers in food chain varies from ecosystem to ecosystem because the number of organisms at each level as variable. It may be upright, partly upright or inverted. Pyramid of energy An energy pyramid is always upright or inverted. Pyramid of energy An energy pyramid is always upright
You need to login to perform this action.
You will be redirected in
3 sec
