Animals whose primary source of food is based on plants are known as -Answer choicesSelect only one optionREVISITCarnivoresHerbivoresOmnivoresNone of the above

The correct answer is Herbivores.

Herbivores are animals that primarily eat plants. This category includes a wide variety of species, ranging from large mammals like elephants and cattle to smaller creatures like rabbits and certain insects. They have evolved specific adaptations that help them to digest plant material efficiently, such as specialized teeth for grinding and a digestive system that can break down tough cellulose found in plant cell walls.

In contrast:

• Carnivores are animals that primarily consume meat.
• Omnivores eat both plants and meat.
• None of the above does not apply as "Herbivores" is indeed a valid choice.

Thus, if you encounter a question regarding animals whose main diet consists of plants, "Herbivores" is the appropriate selection.