Given below are two statements one is labelled as Assertion (A) and the other as Reason (R). Assertion (A): Phytoplankton grow in abundance in the limnetic zone. Reason (R): Limnetic zone is open water zone. Select the correct answer from the code given below:

Given below are two statements, one is labelled as Assertion (A) and other as Reason (R). Assertion (A): Various components of an ecosystem are not interdependent. Reason (R): Human activities have t…

Given below are two statements, one labelled as Assertion (A) and the other as Reason (R): Assertion (A): Tropical land and freshwater habitats exhibit the highest vertebrate diversity. Reason (R): W…

With reference to lichens, which of the following statements is/are correct? 1. Lichens are very good indicators of pollution. 2. Lichens grow well in polluted areas.

With reference to the planet Earth, consider the following statements: I. Rain forests produce more oxygen than that produced by oceans. II. Marine phytoplankton and photosynthetic bacteria produce a…

Statement I: Bioaccumulation is a process of progressive accumulation of heavy metals and pesticides in an organism. Statement II: Large fishes of the pond are found to have higher concentration of p…