NEET BIOLOGY

Detailed explanation-1: -As you probably know, the organisms at the base of the food chain are photosynthetic; plants on land and phytoplankton (algae) in the oceans. These organisms are called the producers, and they get their energy directly from sunlight and inorganic nutrients.

Detailed explanation-2: -Biomass decreases with each trophic level. There is always more biomass in lower trophic levels than in higher ones. Because biomass decreases with each trophic level, there are always more autotrophs than herbivores in a healthy food web. There are more herbivores than carnivores.

Detailed explanation-3: -1) Organisms higher in a food chain/web eat everything that is lower in the food chain/web. Food chains/webs show who eats whom. Many of the organisms linked in the food chain/web do not interact at all. 2) The top of the food chain has the most energy because it accumulates up the chain.

Detailed explanation-4: -At the base of the pyramid are the producers, who use photosynthesis or chemosynthesis to make their own food. Herbivores or primary consumers, make up the second level. Secondary and tertiary consumers, omnivores and carnivores, follow in the subsequent sections of the pyramid.