Free Chemical Coordination And Integration (Daily Quiz: 14) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Chemical Coordination And Integration (Daily Quiz: 14) Time:

Question-1

Find the total no. of hormones from the following which binds to intracellular receptors.
Cortisol, Testosterone, T3, Glucagon, Oxytocin, FSH, Progesterone, ICSH, Oestrogen, GH

(a)

(b)

(c)

(d)


Question-2

MSH of pars intermedia of middle pituitary is responsible for

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Pars intermedia is the boundary between the anterior and posterior lobes of the pituitary. It contains three types of cells - basophils, chromophobes and colloid-filled cysts. This area produces melanocyte stimulating hormone or MSH. It stimulates the synthesis of black pigment melanin in the skin and also causes dispersion of melanin granules in the pigment cells, thereby darkening the colour in certain animals (fishes; amphibians). In man it has no such role.


Question-3

Increase in bleeding time and delay in blood coagulation is due to the deficiency of which hormone?

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Calcium plays an important role in blood clotting. Parathormone, a hormone released by parathyroid glands, increases calcium level in the blood. Therefore, deficiency of this hormone will decrease $Ca^{2+}$ level in the blood, thus leading to delay in blood clotting and increase in bleeding time.


Question-4

The blood calcium level is lowered by the deficiency of

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Parathormone is secreted by chief cells of the parathyroid that regulates the metabolism of calcium and phosphate. It increases calcium absorption from the intestine and also increases calcium resorption from the nephrons of the kidneys. So its deficiency leads to low blood calcium level.


Question-5

Blood glucose level in man is regulated by:

(a)

(b)

(c)

(d)


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