Ecosystem Dynamics — Prelims Questions

Which of the following statements about ecological pyramids is/are correct? 1. The pyramid of energy is always upright. 2. The pyramid of biomass in a pond ecosystem is generally inverted. 3. The pyramid of numbers can never be inverted. Select the correct answer using the code given below:

Consider the following statements regarding the Nitrogen Cycle: 1. Nitrogen fixation is the process by which atmospheric nitrogen is converted into ammonia by certain bacteria. 2. Denitrification is the process of converting nitrates back into atmospheric nitrogen. 3. Human activities, primarily the use of synthetic fertilizers, have significantly reduced the amount of nitrogen entering terrestrial ecosystems. Which of the statements given above is/are correct?

Which of the following is NOT an example of a regulating ecosystem service?

Consider the following statements about Keystone Species: 1. A keystone species always has a high abundance in its ecosystem. 2. The removal of a keystone species can lead to significant changes in the ecosystem structure. 3. Apex predators are often considered keystone species. Which of the statements given above is/are correct?

Which of the following Indian environmental legislations primarily focuses on regulating the diversion of forest land for non-forest purposes?