Draw and label the diagrams.

Human endocrine glands, Human brain, Nephron, Nerve cell, Human excretory system.

Write notes on-

Root pressure, Transpiration, Nerve cell, Human brain, Reflex action

Name the hormones of the following endocrine glands and the function of each.

Pituitary, Thyroid, Adrenal, Thymus, Testis, Ovary.

Answer the following.

A. Explain chemical co-ordination in humans and give the names and functions of some hormones.

B. Explain the difference between the excretory system of humans and plants.

C. Explain co-ordination in plants with the help of suitable examples.

Explain in your own words with suitable examples.

A. What is meant by co-ordination?

B. How does excretion occur in human beings?

C. How is excretion in plants useful to human beings?

D. Describe the transportation system in plants.