CBSE Class 11 Chemical Coordination and Integration Worksheet A

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MULTIPLE CHOICE QUESTIONS

Question. To yield more milk, cow is injected with 
(a) sorbitol
(b) prolactin
(c) gonadotrophs
(d) stilbesterol
Answer. B

Question. Treatment with alloxan destroys 
(a) stilt cells
(b) β-cells of Langerhans
(c) sertoli cells
(d) cells of Leydig
Answer. B

Question.Steroid hormones are similar in structure to
(a) Tryosine 
(b) Cholesterol
(c) Coenzyme A
(d) Glycerol
Answer. B

Question. A person passes much urine and drinks much water put his blood glucose level normal. This condition may be the result of 
(a) a reduction in insulin secretion from pancreas
(b) a reduction in vasopressin secretion from posterior pituitary
(c) a fall in the glucose concentration in urine
(d) an increase in secretion of glucagon
Answer. B

Question. The source of somatostatin is same as that of
(a) Thyroxine and calcitonin 
(b) Insulin and glucagon
(c) Somatotropin and prolactin
(d) Vasopressin and oxytocin
Answer. B

Question. Which of the following match is correct?
Hormone                Effect
(a) Oxytocin       Milk ejection hormone
(b) Glucagon      Decreases blood sugar level
(c) Adrenaline    Decreases heart rate
(d) Thyroxine     Decreases BMR
Answer. A

15. Which row in the chart contains the words that best complete this statement? The (I) glands produce (II), which are transported by the (III) system.
Row        I                 II            III
A      digestive      hormones    circulatory
B      endocrine     enzymes      lymphatic
C      endocrine     hormones    circulatory
D      digestive      enzymes       lymphatic
(a) A
(b) B
(c) C
(d) D
Answer. C

Question. The blood glucose level is commonly expressed as 
(a) mm. of Hg
(b) milligram per deci litre
(c) parts per million
(d) gram (mg/dl) per litre
Answer. B

Question. The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands. Which one of the following endocrine gland can function independently of the pituitary gland?
(a) Thyroid
(b) Gonads
(c) Adrenals
(d) Parathyroid
Answer. D

Question. Match List-I (Endocrine glands) with List-II (Hormones secreted) and select the correct answer using the codes given below
  List- I             List-II
A. Gonads        I. Insulin
B. Pituitary     II. Progesterone
C. Pancreas    III. Growth hormones
D. Adrenal      IV. Cortisone
Codes :
(a) A – III; B – II; C – IV; D – I
(b) A – II; B – III; C – IV; D – I
(c) A – II; B – III; C – I; D – IV
(d) A – III; B – II; C – I; D – IV
Answer. C

Question. Which gland is concerned with salt equilibrium in body? 
(a) Anterior pituitary
(b) Pancreas
(c) Adrenal
(d) Thyroid
Answer. C

Question. Which of the following hormones have antagonistic (opposing) effects?
(a) Thyroxine and calcitonin
(b) Insulin and glucagon
(c) Growth hormone and epinephrine
(d) ACTH and glucocorticoids
Answer. B

Question. Select the correct option describing gonadotropin activity in a normal pregnant female: 
(a) High level of FSH and LH stimulate the thickening of endometrium.
(b) High level of FSH and LH facilitate implantation of the embryo.
(c) High level of hCG stimulates the synthesis of estrogen and progesterone.
(d) High level of hCG stimulates the thickening of endometrium.
Answer. C

Question. Which endocrine gland is called ‘the Throne of immunity’? 
(a) Spleen
(b) Thymus
(c) Pineal
(d) Adrenal medulla
Answer. B

Question. Which of the following hormone acts upon the renal tubule and blood capillaries ? 
(a) Glucagon
(b) Aldosterone
(c) Vasopressin
(d) Glucocorticoids
Answer. C

ASSERTION REASON QUESTIONS

Directions : Each of these questions contains an Assertion followed by Reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.

Question. Assertion : Mammary glands are apocrine glands. 
Reason : The distal part containing secretory granules break down and leaves as a secretion.
Answer. A

Question. Assertion : Hormone calcitonin has antagonistic effect to that of parathormone. 
Reason : Calcitonin decreases blood calcium level while parathormone increases blood calcium level.
Answer. A

Question. Assertion : The person with diabetes insipidus feels thirsty.
Reason : A person with diabetes insipidus suffers from excess secretion of vasopressin.
Answer. C

Question. Assertion: Failure of secretion of hormone vasopressin causes diabetes mellitus in the patient.
Reason: Vasopressin increases the volume of urine by increasing the reabsorption of water from the urine.
Answer. D

1. What are hormones.

2. Name the gland of emergency.

3. Which gland secrete glucagon?

4. Differentiate hormone & neurohormone?

5. What are gonadotropics?

6. Why oxytocin is called as ‘birth hormone’?

7. Describe the physiological functions & disorders of thyroid gland.

8. Write full form of ADH and describe how it affects the functioning of kidney tubules.

9. Name the hormone that regulates each of the following and mention the source of it.

1) urinary elimination of water.

2) storage of glucose as glycogen.

3) Na+ and K+ metabolism.

4) Basal metabolic rate

5) Descent of testes iota scrotum

Click on link below to download CBSE Class 11 Chemical Coordination and Integration Worksheet A.