CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set A

MULTIPLE CHOICE QUESTIONS

Question. Addison's disease result from 
(a) hyposecretion of gonads
(b) hyposecretion of adrenal gland
(c) hypertrophy of kidney
(d) hyposecretion of pituitary gland
Answer. B

Question. Which of the following statements regarding glucagon is false?
(a) It is secreted by α-cells of Langerhans.
(b) It acts antagonistically to insulin.
(c) It decreases blood sugar level.
(d) The gland responsible for its secretion is heterocrine gland.
Answer. C

Question. Which one of the following four gland is correctly matched with the accompanying description? 
(a) Thyroid - Hyperactivity in young children causes cretinism
(b) Thymus - Starts undergoing atrophy after puberty
(c) Parathyroid - Secretes para-thormone, which promotes movement of calcium ions from blood into bones during calcification
(d) Pancreas - Delta cells of the 'islets of Langerhans' secrete a hormone, which stimulates glycolysis in liver
Answer. B

Question.The development of adult characteristics in a moulting insect is promoted by
(a) Thyroxine
(b) Ecdysone
(c) Pheromone
(d) None of these
Answer. B

Question. Which one of the following hormones contains iodine?
(a) Thyroxine
(b) Testosterone
(c) Insulin
(d) Adrenaline
Answer. A

Question. Heart beat increases at the time of interview because of
(a) renin
(b) rennin
(c) adrenaline
(d) Diuretic ADH
Answer. C

Question. Conn’s disease is caused by the over secretion of 
(a) ADH
(b) ACTH
(c) Oxytocin
(d) Aldosterone
Answer. D

Question. Acromegaly is due to hypersecretion of 
(a) Insulin
(b) Thyroxine
(c) Growth hormone
(d) None of these
Answer. C

Question. Which one of the following four secretions is correctly matched with its source, target and nature of action?

Answer. D

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