Ecosystem Dynamics | MCQs

Explanation

The frog eats the caterpillar (a primary consumer), making the frog a secondary consumer.

It occupies the third trophic level in the food chain: Producer → Primary → Secondary → Tertiary.

Explanation

Decomposers like bacteria and fungi break down dead plants and animals.

This process recycles nutrients back into the soil, supporting new plant growth.

Explanation

Rat, zebra, and goat are herbivores, meaning they eat plants — placing them as primary consumers.

Primary consumers occupy the second trophic level in a food chain.

Explanation

The statement that tropical rainforests accumulate more organic matter on the forest floor than temperate grasslands is incorrect.

In reality, the decomposition rate in tropical rainforests is so rapid due to high temperatures and humidity that organic matter does not accumulate significantly on the forest floor.

In contrast, temperate grasslands may accumulate more organic matter over time due to slower decomposition rates caused by cooler temperatures and seasonal variations.

Explanation

The study of the interaction between organisms and their surroundings is called ecology.

ecology that deals with the study of interactions between biotic and abiotic factors of the environment

Explanation

 The direction of energy flow in an ecosystem is unidirectional, moving through various trophic levels successively.

It begins with the input of solar energy, which is captured by primary producers, such as plants, through photosynthesis.

Explanation

Nutrient cycling is a cyclic process that encompasses the movement of nutrients from the physical environment to living organisms and back to the environment.

Explanation

Explanation