DENDROLOGY

Detailed explanation-1: -Carnivores (organisms that eat meat) and omnivores (organisms that eat plants and meat) occupy the third level. Both primary (herbivores) and secondary (carnivores and omnivores) consumers are heterotrophs, while primary producers are autotrophs. A third type of heterotrophic consumer is a detritivore .

Detailed explanation-2: -Holozoic Nutrition-This is a kind of heterotrophic nutrition where organisms intake solid food; a method that is also called ingestive nutrition. The food consumed may be either another organism or a plant. There are three different types of holozoic organisms and are classified on the basis of the food they consume.

Detailed explanation-3: -Consumers are also called heterotrophs.