Explain the physiological effects of Auxins.

(a) Describe the structure of thyroid gland?
(b) List the functions of thyroid hormones.

Write a note on Thyroid Dysfunctions.

Describe the role of pancreas in maintenance of blood sugar level.

In botanical gardens and tea gardens the gardeners trim the plants regularly so that they remain bushy. Write the scientific explanation of this practice.

(a) Name the gaseous plant hormone. Describe its three different actions in plants.
(b) Which hormone is known as stress hormone in plants ? Why?

Describe an experiment which demonstrates that growth stimulating hormone is produced at the tip of coleoptile.

Write the physiological effects of gibberellins.

Sanjay is sitting in the exam hall. Before the start of the exam, he sweats a lot, with increased rate of heart beat. Why does this condition occur?

Susan’s father feels very tired and frequently urinates. After clinical diagnosis he was advised to take an injection daily to maintain his blood glucose level. What would be the possible cause for this? Suggest preventive measures.