Humans can survive without plants and animals

Q. Assertion :Mycoplasmas are pathogenic in animals and plants. Reason: Mycoplasmas lack cell wall and can survive without oxygen.

Q. If all living things extinct except Humans,Plant and Microorganisms then humans can survive easily then why should we conserve other animals?

Q.

People of Khejadli village take good care of plants, trees and animals. They say that plants and animals can survive without us, but we cannot survive without them. Inspired by her elders Amrita marked some land for her pets (Camel and Ox) and plants. Find the ratio of the areas kept for animals and plants to the living area.

Q. Wild animals like tiger, wolf, lion and leopard do not eat plants. Does this mean that they can survive without plants? Can you provide a suitable explanation?

Q. It is very difficult for humans to survive without trees and animals. Justify this statement.