MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers

Chemical Coordination and Integration Class 11 Biology MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have Provided Chemical Coordination and Integration Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 11 Biology Chapter 22 Quiz

Class 11 Biology Chapter 22 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Biology Chapter 22 Chemical Coordination and Integration to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Chemical Coordination and Integration Class 11 Biology MCQ online test

Q1.	Which of the following is an emergency hormone?
	A.Norepinephrine
	B.Androgen
	C.Cortisol
	D.FSH

Ans: Norepinephrine
Explanation:
Adrenaline (epinephrine) and noradrenaline (norepinephrine) are called as catecholamines.
These hormones are secreted in response to stress and during emergency. So these are called emergency hormones or hormones of flight and fight.

Q2.	Secretin causes stimulation of
	A.water
	B.bile juice
	C.gastric secretion
	D.pepsinogen

Ans: water
Explanation:
Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions.

Q3.	Match the columns. 1. PRL – A. Pigmentation of skin 2. LH – B. Steriod hormones 3. ACTH – C. Formation of milk 4. MSH – D. Gonadal activity
	A.1-C, 2-D, 3-B, 4-A
	B.1-C, 2-D, 3A, 4-B
	C.1-D, 2-C, 3-B, 4-A
	D.1-B, 2-C, 3-D, 4-A

Ans: 1-C, 2-D, 3-B, 4-A
Explanation:
Column I shows the names of hormones and column II shows the functions of the hormones.

Q4.	In adults, insufficient thyroxine can lead to ______.
	A.Goiter
	B.Tetany
	C.Cretinism
	D.Myxedema

Ans: Myxedema

Q5.	In the body, both the blood sodium and potassium levels are regulated by _______.
	A.Pheromones
	B.Aldosterone
	C.Cortisol
	D.Androgens

Ans: Aldosterone

Q6.	Chemical name of T₄ is
	A.Tetradiodothyronine
	B.Tridiodothyronine
	C.Tetraiodothyronine
	D.Triiodothyronine

Ans: Tetraiodothyronine
Explanation:
Chemical name of T₄ is tetraiodothyronine.
Chemicl name of T₃ is triiodothyronine.

Q7.	Anabolic steroids are ______ versions of testosterone.
	A.Effective
	B.Synthetic
	C.Natural
	D.Ineffective

Ans: Synthetic

Q8.	Which of the following acts on bones?
	A.Melatonin
	B.Triiodothyronine
	C.GH
	D.Parathyroid

Ans: Parathyroid
Explanation:
Parathyroid hormone acts on bones and stimulates the process of bone resorption.

Q9.	Glucagon hormone is secreted by the ______.
	A.Thyroid gland
	B.Adrenal gland
	C.Pituitary gland
	D.Pancreas

Ans: Pancreas

Q10.	Which one of the followings are male sex hormones?
	A.Insulins
	B.Aldosterones
	C.Androgens
	D.Pheromones

Ans: Androgens

Q11.	Choose the incorrect statement.
	A.Hormones are non-nutrient chemicals.
	B.Exocrine glands are ductless glands.
	C.Invertebrates have simple endocrine system.
	D.All of the above statements are incorrect.

Ans: Exocrine glands are ductless glands.
Explanation:
Endocrine glands lacks ducts and are called as ductless glands.

Q12.	Endemic goitre is a state of
	A.Increased thyroid function
	B.Normal thyroid function
	C.Decreased thyroid function
	D.Moderate thyroid function

Ans: Decreased thyroid function

Q13.	Match the columns. 1. PRL – A. Pigmentation of skin 2. LH – B. Steriod hormones 3. ACTH – C. Formation of milk 4. MSH – D. Gonadal activity
	A.1-C, 2-D, 3-B, 4-A
	B.1-C, 2-D, 3-A, 4-B
	C.1-D, 2-C, 3-B, 4-A
	D.1-B, 2-C, 3-D, 4-A

Ans: 1-C, 2-D, 3-B, 4-A
Explanation:
Column I shows the names of hormones and column II shows the functions of the hormones.

Q14.	PTH is called as hypercalcemic hormone because it leads to the
	A.absorption of CaCO₃ from the digested food
	B.reabsorption of water from renal tubules
	C.increasing blood calcium levels
	D.maintainence ion balance in blood

Ans: increasing blood calcium levels
Explanation:
This is called so because PTH stimulates the reabsorption of calcium by the renal tubules and increases calcium absorption from the digested food.

Q15.	Corpus luteum secretes
	A.progesterone
	B.estrogen
	C.glucagon
	D.vasopressin

Ans: progesterone
Explanation:
After ovulation, ruptured follicle gets converted to corpus luteum which secretes progesterone.

Q16.	In adults, insufficient thyroxine can lead to ______.
	A.Goiter
	B.Tetany
	C.Cretinism
	D.Myxedema

Ans: Myxedema

Q17.	In children, hypothyroidism (underactive thyroid gland) can lead to ______
	A.Goiter
	B.Acromegaly
	C.Cretinism
	D.Myxedema

Ans: Cretinism

Q18.	Diurnal rhythm of the body is maintained by
	A.melatonin
	B.isthmus
	C.PTH
	D.norepinephrine

Ans: melatonin
Explanation:
Pineal gland secretes melatonin.
It plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body.

Q19.	Which hormone inhibits the release of growth hormone?
	A.Insulin
	B.Gonadotrophin
	C.Somatostatin
	D.Thymosin

Ans: Somatostatin
Explanation:
Hypothalamus produces two kinds of hormones: releasing hormone and inhibiting hormones.
GnRH is releasing hormone which stimulates pituitary synthesis.
Somatostatin inhibits the release of GH from the pituitary.