NEET BIOLOGY

Detailed explanation-1: -The first and lowest level contains the producers, green plants. The plants or their products are consumed by the second-level organisms-the herbivores, or plant eaters. At the third level, primary carnivores, or meat eaters, eat the herbivores; and at the fourth level, secondary carnivores eat the primary carnivores.

Detailed explanation-2: -The producers form the first trophic level. The herbivores or the primary consumers form the second trophic level. The carnivores form the third trophic level.

Detailed explanation-3: -The first trophic levels are producers in a food chain which includes green plants. It is the lowest trophic level. The reason behind producers placed on the first trophic level is that they have the capability to transfer solar energy into food.