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 the impacts on the environment. Select the correct answer using the codes given below.

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 wat…

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…

The movement of nutrient elements through the various components of an ecosystem is called

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.

Which of the following is correct sequence of ecosystem in order of decreasing productivity?