Question

Which of the following forms the first trophic level ?
A Owl
B Monkey
C Man
D Wheatgrass

Answer 1

Hint A food chain is a network of links in a food web that starts with producers and ends with apex predators, detritivores, or decomposer species. A food chain also demonstrates how organisms are linked by the food they consume. Each trophic level in a food chain is represented by a distinct level of the food chain.

Complete step by step answer:
Trophic level is a step in an ecosystem's nutritional series, or food chain. The feeding behaviour of a chain's organisms is used to classify them into various tiers. The producers, or green plants, are found on the first and lowest level.
The second-level organisms, herbivores, or plant eaters, consume the plants or their products. Primary carnivores, or meat eaters, devour herbivores at the third level, while secondary carnivores eat primary carnivores at the fourth level.
Many organisms graze on many trophic levels, therefore these classifications are not strictly defined; for example, some carnivores also ingest plant materials or carrion and are classified as omnivores, and some herbivores occasionally consume animal stuff.
The decomposers or transformers, a different trophic level, are creatures like bacteria and fungus that break down dead species and waste materials into nutrients that the producers may use.
Owls are frequently the ecosystem's top predator. Because they devour rodents and birds, owls are carnivores.

So, option A is correct.

Note: All of the food chains in an ecosystem are referred to as a food web. A food web is a graphical representation of what consumes what in an ecological community, as well as the natural connectivity of food chains. The consumer-resource system is another term for the food web.