NEET BIOLOGY

Detailed explanation-1: -Organisms in food webs are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers, and decomposers (last trophic level). Producers make up the first trophic level.

Detailed explanation-2: -Each step along a food chain is known as a trophic level or feeding level, and every organism can be categorized by its trophic level. The most basic trophic level is producers-plants such as underwater bay grasses and free-floating algae that make their own food through photosynthesis.

Detailed explanation-3: -Trophic level is defined as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans. The method to determine the trophic level of a consumer is to add one level to the mean trophic level of its prey.

Detailed explanation-4: -Based on the source of their nutrition or food, organisms occupy a specific place in the food chain known as their trophic level. Primary producers comprise the first trophic level, followed by primary consumers (herbivores), secondary consumers (carnivores are feeding on herbivores), etc.

Detailed explanation-5: -Secondary consumers, at trophic level three, are carnivores and omnivores, which obtain at least part of their nutrients from the tissue of herbivores. This includes animals and carnivorous plants that feed on herbivorous insects (insectivores).