Question

The sequence of species through which the organic molecules pass in a community is called

• A. food web
• B. food chain
• C. life processes
• D. nutrient cycle

Answer 1

The correct option is B food chain

The sequence of species through which the organic molecules pass in a community is called food chain. In the natural surroundings organisms occupy a place according to their feeding relationship with other organisms thus occupying a specific place in the food chain that is known as their trophic level. Producers belong to the first trophic level, herbivores (primary consumers) to the second and carnivores (secondary consumers) to the third and top consumers (tertiary consumers) to the fourth trophic level.

In an ecosystem, a single food chain never exists in isolation; they are interconnected to form a food web.

Food web

All those biological processes that help in the survival of the organism like nutrition, respiration, reproduction, transportation, and excretion are called life processes.

The nutrient cycle is the cyclic pathway in which nutrients move between organic and inorganic matter through physical, chemical, and biological processes.