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NCERT Exemplar · Class 11 · Biology

Chapter 22: Chemical Coordination and Integration

Practice each question, then open the answer or worked solution.

MULTIPLE CHOICE QUESTIONS

15 questions
Q1Written answer

Select the right match of the endocrine gland and their hormone among the

options given below

A. Pineal

B. Thyroid

C. Ovary

D. Adrenal medulla

i. Epinephrine

ii. Melatonin

iii. Estrogen

iv. Tetraiodothyronine

Options:

a. A-iv, B-ii, C-iii, D-i

b. A-ii, B-iv, C-i, D-iii

c. A-iv, B-ii, C-i, D-iii

d. A-ii, B-iv, C-iii, D-i

Show solutionHide solution
Worked solution

Option (d) is the answer.

Q2Written answer

Which of the following hormones is not secreted by the anterior pit.

a. Growth hormone

b. Follicle-stimulating hormone

c. Oxytocin

d. Adrenocorticotrophic hormone

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Worked solution

Option (c) is the answer.

Q3Written answer

Mary is about to face an interview. But during the first five minutes

before the interview, she experiences sweating, increased rate of heart

beat, respiration etc. Which of the following hormones are responsible

for her restlessness?

a. Estrogen and progesterone

b. Oxytocin and vasopressin

c. Adrenaline and noradrenaline

d. Insulin and glucagon

Show solutionHide solution
Worked solution

Option (c) is the answer.

Q4Written answer

The steroid responsible for the balance of water and electrolytes in our body is

a. Insulin

b. Melatonin

c. Testosterone

d. Aldosterone

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Worked solution

Option (d) is the answer.

Q5Written answer

Thymosin is responsible for

a. Raising the blood sugar level

b. Raising the blood calcium level

c. Differentiation of T lymphocytes

d. The decrease in blood RBC

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Worked solution

Option (c) is the answer.

Q6Written answer

In the mechanism of action of a protein hormone, one of the second messengers is

a. Cyclic AMP

b. Insulin

c. T3

d. Gastrin

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Worked solution

Option (a) is the answer.

Q7Written answer

Leydig cells produce a group of hormones called

a. Androgens

b. Estrogens

c. Aldosterone

d. Gonadotropins

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Worked solution

Option (a) is the answer.

Q8Written answer

Corpus luteum secretes a hormone called

a. Prolactin

b. Progesterone

c. Aldosterone

d. Testosterone

Show solutionHide solution
Worked solution

Option (b) is the answer.

Q9Written answer

Cortisol is secreted by

a. Pancrease

b. Thyroid

c. Adrenal

d. Thymus

Show solutionHide solution
Worked solution

Option (c) is the answer.

Q10Written answer

A hormone responsible for the normal sleep-wake cycle is

a. Epinephrine

b. Gastrin

c. Melatonin

d. Insulin

Show solutionHide solution
Worked solution

Option (c) is the answer.