State the main function of abscisic acid in plants.

Name the plant hormone responsible for the promotion of cell division and a hormone responsible for elongation of cells.

Name the hormone secreted by one endocrine gland during emergency. Name the gland which secretes this hormone.

Which part of the brain controls posture and balance of the body?

What is the direction of impulse in a neuron?

What are neuroglias?

Define reflex arc.

Name the plant hormones responsible for the following:

(a) Elongation of cells

(b) Growth of stem

(c) Promotion of cell division

(d) Falling of senescent leaves

State the role of the brain in reflex action.

If iodine is insufficient in one’s diet, what might be the deficiency disease and its symptoms?

How does our body maintain blood sugar level?

What happens at the synapse between two neurons?

Match the terms of Column (A) with those of Column (B)

How does feedback mechanism regulate the hormone secretion?

Explain how the human body responds when adrenaline is secreted into the blood.

Name the hormone which is injected to a diabetic patient.

If the cerebellum is not functioning properly, what activities of our body are affected?

What are the components of reflex arc?

How do muscle cells move?

What constitutes the central and peripheral nervous systems? How are the components of central nervous system protected?

What is turgor movement? Explain it with example.

What is autonomic nervous system? State functions of sympathetic and Para-sympathetic systems.

What is (i) phototropism and (ii) geotropism?

With labelled diagrams describe an activity to show that light and gravity change the direction that plant parts grow in.

Mention the role of each of the following plant hormones:

(i) Auxin, (ii) Abscisic acid

Mention one function for each of these hormones:

(a) Thyroxine, (b) Adrenaline, (c) Insulin, (d) Growth hormone, (e) Testosterone

What are the major parts of the brain? Mention the functions of different parts.