Which is not a symptom of hyperglycaemia?
1. Loss of weight
2. Breakdown of muscle tissue
3. High blood glucose level
4. Diplopia

Which of the following statements regarding glucagon is false?
1. It is secreted by $\mathrm{\alpha }$-cells of Langerhans.
2. It acts antagonistically to insulin. 
3. It decreases blood sugar level.
4. The gland responsible for its secretion is heterocrine gland

A patient of diabetes mellitus excretes glucose in urine even when he is kept in a carbohydrate free diet. It is because:-

1. fats are catabolised in adipose tissues to form glucose

2. amino acids are catabolised in kidney to form glucose

3. amino acids are discharged in blood stream from liver

4. glycogen from muscles is released in blood stream

Select the correct statement about hormones and their actions.

1. Parathyroid hormone increases ${\mathrm{K}}^{+}$ absorption of the body.

2. Insulin and glucagon helps to maintain blood sugar levels.

3. Old aged people have weak immunity due to increased activity of thymus.

4. Osteoporosis in women occurs due to increased levels of oestrogens.

The glucose homeostasis in blood is maintained by