I. Stomata → Spirogyra 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?

The diagram above is an illustration of the longitudinal section of a plant organ. Study it and answer the question below;

The plant is a? 

When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it?

The body of a snail is divided into head?

The part labelled II is?