Transport of oxygen by blood takes place with the help of –

In the human body, fats are stored in the –

Stem cells which capable of developing into other types of cells come from the –

Which is the only mammal that can fly?

Birds which swim in water have –

Animals living in the tree trunks are known as –

Which of the following is correct about cold-blooded animals?

Which of the following animals has the longest life span?

Food is stored in plants in the form which carbohydrate?

Proteins are made up of –