What is the movement of a plant shoot towards light called?

The growth of tendril in pea plants is due to:

Which is the main thinking part of the brain? State how it functions.

What are voluntary and involuntary actions? Give one example of each.

Explain how the movement of leaves of a sensitive plant is different from the movement of shoots towards light.

$(a)$ An old man is advised by his doctor to take less sugar in his diet. Name the disease from which the man is suffering. Mention the hormone due to imbalance of which he is suffering from this disease. Which endocrine gland secretes this hormone?
$(b)$ Name the endocrine gland which secretes growth hormone. What will be its effect on a person of:
$(i)$ Deficiency of growth hormones?
$(ii)$ Excess secretion of growth hormones?