Chemical Coordination and Integration Class 11 MCQ Online Test With Answers Questions

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 MCQ With Answers

Biology Class 11 Chapter 22 MCQs On Chemical Coordination and Integration

Chemical Coordination And Integration MCQ Question 1.
Which of the following is an emergency hormone?
(a) Norepinephrine
(b) Androgen
(c) Cortisol
(d) FSH

Answer

Answer: (a) 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.

Class 11 Biology Chapter 22 MCQ Question 2.
Secretin causes stimulation of
(a) water
(b) bile juice
(c) gastric secretion
(d) pepsinogen

Answer

Answer: (a) water
Explanation:
Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions.

MCQ On Chemical Coordination And Integration Question 3.
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

Answer

Answer: (a) 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.

Chemical Coordination And Integration Class 11 MCQ Question 4.
In adults, insufficient thyroxine can lead to ______.
(a) Goiter
(b) Tetany
(c) Cretinism
(d) Myxedema

Answer

Answer: (d) Myxedema

Chemical Control And Coordination MCQ Question 5.
In the body, both the blood sodium and potassium levels are regulated by _______.
(a) Pheromones
(b) Aldosterone
(c) Cortisol
(d) Androgens

Answer

Answer: (b) Aldosterone

Chemical Control And Coordination MCQ Questions Question 6.
Chemical name of T₄ is
(a) Tetradiodothyronine
(b) Tridiodothyronine
(c) Tetraiodothyronine
(d) Triiodothyronine

Answer

Answer: (c) Tetraiodothyronine
Explanation:
Chemical name of T₄ is tetraiodothyronine.
Chemicl name of T₃ is triiodothyronine.

Chemical Coordination And Integration MCQ Pdf Download Question 7.
Anabolic steroids are ______ versions of testosterone.
(a) Effective
(b) Synthetic
(c) Natural
(d) Ineffective

Answer

Answer: (b) Synthetic

MCQ On Chemical Control And Coordination Question 8.
Which of the following acts on bones?
(a) Melatonin
(b) Triiodothyronine
(c) GH
(d) Parathyroid

Answer

Answer: (d) Parathyroid
Explanation:
Parathyroid hormone acts on bones and stimulates the process of bone resorption.

MCQs On Chemical Coordination And Integration Question 9.
Glucagon hormone is secreted by the ______.
(a) Thyroid gland
(b) Adrenal gland
(c) Pituitary gland
(d) Pancreas

Answer

Answer: (d) Pancreas

MCQ Of Chemical Coordination And Integration Question 10.
Which one of the followings are male sex hormones?
(a) Insulins
(b) Aldosterones
(c) Androgens
(d) Pheromones

Answer

Answer: (c) Androgens

MCQ On Integration Class 11 Question 11.
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.

Answer

Answer: (b) Exocrine glands are ductless glands.
Explanation:
Endocrine glands lacks ducts and are called as ductless glands.

MCQ On Chemical Coordination And Integration Class 11 Question 12.
Endemic goitre is a state of
(a) Increased thyroid function
(b) Normal thyroid function
(c) Decreased thyroid function
(d) Moderate thyroid function

Answer

Answer: (c) Decreased thyroid function

Class 11 Biology Chapter 22 Important Questions Question 13.
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

Answer

Answer: (a) 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.

Chemical Coordination And Integration Class 11 Important Questions Pdf Question 14.
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

Answer

Answer: (c) 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.

Class 11 Chemical Coordination And Integration MCQs Question 15.
Corpus luteum secretes
(a) progesterone
(b) estrogen
(c) glucagon
(d) vasopressin

Answer

Answer: (a) progesterone
Explanation:
After ovulation, ruptured follicle gets converted to corpus luteum which secretes progesterone.

Question 16.
In adults, insufficient thyroxine can lead to ______.
(a) Goiter
(b) Tetany
(c) Cretinism
(d) Myxedema

Answer

Answer: (d) Myxedema

Question 17.
In children, hypothyroidism (underactive thyroid gland) can lead to ______
(a) Goiter
(b) Acromegaly
(c) Cretinism
(d) Myxedema

Answer

Answer: (c) Cretinism

Question 18.
Diurnal rhythm of the body is maintained by
(a) melatonin
(b) isthmus
(c) PTH
(d) norepinephrine

Answer

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

Question 19.
Which hormone inhibits the release of growth hormone?
(a) Insulin
(b) Gonadotrophin
(c) Somatostatin
(d) Thymosin

Answer

Answer: (c) 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.

Question 20.
Which of the following is essential for thyroid gland?
(a) NaCl
(b) I₃
(c) CaCO₂
(d) H₂CO₃

Answer

Answer: (b) I₃
Explanation:
Iodine is essential for thyroid gland.

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