Which one of the following is a characteristic feature of a cropland ecosystem?

Select the incorrect statement for the detritus food chain.

Which of the following statements are correct?
$(a)$ Energy flow from producers to consumers is unidirectional
$(b)$ Energy pyramid can never be inverted
$(c)$ Transfer of energy follows the $10\%$ law
Choose the correct answer from the options given below:

Identify the mismatched event from the following structures.

Climax stage is achieved quickly in secondary succession as compared to primary succession. Why?

Which of the following is a primary consumer in a maize field ecosystem?