What gas do plants absorb from the air?

What is the process by which plants make their food?

What is the green pigment in leaves called?

Which of these is a climbing plant?

What do you call the outer covering of a seed?

What is the main source of energy for plants?

Which part of the cactus stores water?

What is the function of stomata in leaves?

Which is the male part of a flower?

Which of these is a herb?