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.
Chemical Coordination and Integration Class 11 MCQs Questions with Answers
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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