Question 1:

Which of the following terms refers to the transfer of energy from one trophic level to another in an ecosystem?

Explanation: Energy flow refers to the transfer of energy from one trophic level to another in an ecosystem. It describes the movement of energy as it is transferred from producers to primary consumers, secondary consumers, and so on. Therefore, option C is correct.

Question 2:

Which trophic level in an ecosystem primarily consists of autotrophic organisms that convert sunlight into chemical energy?

Explanation: The trophic level primarily consisting of autotrophic organisms that convert sunlight into chemical energy is called primary producers. They are usually plants or photosynthetic organisms that produce their own food through photosynthesis. Therefore, option A is correct.

Question 3:

Which of the following represents the correct order of trophic levels in an ecosystem?

Explanation: The correct order of trophic levels in an ecosystem is: Primary producers → Primary consumers → Secondary consumers → Tertiary consumers. This sequence represents the flow of energy and nutrients from the bottom of the food chain to the top. Therefore, option A is correct.

Question 4:

Which of the following organisms play a crucial role in the decomposition of organic matter and recycling of nutrients in an ecosystem?

Explanation: Decomposers play a crucial role in the decomposition of organic matter and recycling of nutrients in an ecosystem. They break down dead organisms and organic waste, releasing nutrients back into the environment for reuse by primary producers. Therefore, option C is correct.

Question 5:

Which of the following best describes the term "trophic level" in an ecosystem?

Explanation: The term "trophic level" in an ecosystem refers to the position an organism occupies in a food chain. It describes an organism's feeding level and its relationship to the energy flow within the ecosystem. Therefore, option C is correct.