Question

The last organisms of the food chain are generally

• A. Photosynthetic plants
• B. Herbivores
• C. Carnivores
• D. Decomposers

Answer 1

The correct option is D Decomposers

The trophic level of an organism is the position it holds in a food chain. Primary producers (organisms that make their own food from sunlight and/or chemical energy from deep sea vents) are the base of every food chain - these organisms are called autotrophs.

Primary consumers are animals, that eat primary producers; they are also called as herbivores (plant-eaters).

Secondary consumers eat primary consumers. They are carnivores (meat-eaters) and omnivores (animals that eat both animals and plants).

Tertiary consumers eat secondary consumers.

Quaternary consumers eat tertiary consumers. When any organism dies, it is eventually eaten by detrivores (like vultures, worms and crabs) and broken down by decomposers (mostly bacteria and fungi), and the exchange of energy continues. Thus, the correct answer is option D.