Free Chemical Coordination And Integration (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Neurohypophysis consist of

(a) Pars intermedia

(b) Pars distalis

(c) Pars nervosa

(d) All of these

Question-2

Which of the following statements is correct in relation to the endocrine system ?

(a) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones

(b) Adenohypophysis is under direct neural regulation of the hypothalamus

(c) Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones

(d) Releasing and inhibitory hormones are produced by the pituitary gland

Question-3

Melatonin influences

(a) Menstrual cycle

(b) Metabolism, pigmentation

(c) Defence capability

(d) All of these

Question-4

Deficiency of vasopressin primarily results in

(a) decreased volume of urine.

(b) excessive secretion of urochrome.

(c) increased volume of urine.

(d) change in pH from acidic to alkaline range.

Question-5

Which hormone helps in reabsorption of water from kidney?

(a) STH

(b) ACTH

(c) ADH

(d) TTH

Question-6

Blood calcium level is a resultant of how much dietary calcium is absorbed, how much calcium is lost in the urine, how much bone dissolves releasing calcium into the blood and how much calcium from blood enters tissues. A number of factors play an important role in these processes. Mark the one which has no role

(a) Parathyroid hormone

(b) Vitamin D

(c) Thyrocalcitonin

(d) Thymosin

Question-7

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. (A: Endocrine gland, B: Hormone, C: Function/deficiency symptoms)

A	B	C
(a) Anterior pituitary	Oxytocin	Stimulates uterus contraction during child birth
(b) Posterior pituitary	Growth hormone (GH)	Over secretion stimulates abnormal growth
(c) Thyroid	Thyroxin	Lack of iodine in diet results in goitre
(d) Corpus luteum	Testosterone	Stimulates spermatogenesis

(a) (a)

(b) (b)

(c) (c)

(d) (d)

Question-8

Select the option which correctly matches the endocrine gland with its hormone and its function.

	Endocrine gland	Hormone	Function
(a)	Ovary	FSH	stimulates follicular development and the secretion of estrogens.
(b)	Placenta	estrogen	initiates secretion of the milk.
(c)	Corpus luteum	estrogen	essential for maintenance of endometerium
(d)	Leydig cells	androgen	initiates the production of sperms.

(a) (a)

(b) (b)

(c) (c)

(d) (d)

Question-9

Somatostatin

(a) Stimulates release of insulin and glucagon

(b) Stimulates glucagon release while inhibits insulin release

(c) Inhibits release of insulin and glucagon

(d) Inhibits glucagon release while stimulates insulin release

Question-10

Fight-or-flight reactions can cause the activation of

(a) The kidney, leading to suppression of rennin-angiotensin-aldosterone pathway.

(b) The parathyroid glands, leading to increased metabolic rate.

(c) The adrenal medulla, leading to increased secretion of epinephrine and norepinephrine.

(d) The pancreas leading to a reduction in the blood sugar levels.