Biology Past Questions and Answers

I. Stomata → Spirogyro II. Alveoli → Earthworm III. Malpighian tubule → Mammal IV. Contractile vacuole → Protozoa.
Which of the above structures is correctly matched with the organisms in which it is found?

A food chain always begins with a

Mycorrhizae promote plant growth by

The barrier between maternal and foetal blood is the

The blood component that has the greatest affinity for oxygen is the