Question

Earthworm is a
A. Herbivore
B. Secondary consumer
C. Tertiary consumer
D. Detritivore

Answer 1

The mode of nutrition of earthworms is basically on the dead organic matter. Earthworms reside in the soil and consume feces and other decomposing organic products.

Complete answer: Earthworm is an organism which belongs to Annelida class in the animal kingdom. It can be recognized by the segmentation it has all over its body.
In option A, they are called herbivores. Herbivores are organisms that feed on plant and plant products only for survival. Rather than, earthworms are omnivores. The omnivores are organisms that feed on both plant and animal meat and products for survival.
In option B, they are called secondary consumers. The secondary consumers are those organisms that feed on primary consumers. The primary consumers are those organisms that feed on the organisms which produce the food. So, earthworms are primary consumers.
In option C, tertiary consumers. The tertiary consumers are those organisms that feed on primary and secondary organisms.
In option D, they are called to be detritivores. Detritivores are organisms that consume or feed on decomposing parts of animals and plants which include feces. These decomposed parts are known as detritus and hence, the name detritivores.
So, the correct answer is option D.

Note: The earthworms are a very crucial creature for cultivation and agriculture. They have proven to be important to convert the biological waste into manure and humus by consuming them. The organic manure and humus are very essential for the healthy growth of plants due to the high nutritional content of minerals and elements present in them. They have used from ages to work upon composed pits and do the conversion.