Class 11th Biology - Chemical Coordination and Integration Case Study Questions and Answers 2022 - 2023
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Chemical Coordination and Integration Case Study Questions With Answer Key
11th Standard CBSE
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Reg.No. :
Biology
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The picture given below depicts the location of endocrine glands in a human body. Answer the questions that follow:
Identify and name the gland described in each of the following.
(a) The gland that secretes emergency hormones.
(b) The gland concerned with the normal rhythms of sleep-wake cycle.
(c) The gland that plays a major role in the development of immune system.
(d) The gland which secretes gonadotropins.
(e) The gland that regulates glucose homeostasis.
(f) The gland that secretes androgens. -
The picture given below is the diagrammatic representation of pituitary and its relationship with the hypothalamus.
Answer the following questions.
(a) What doesArepresent? Name the two hormones secreted by A.
(b) What is the significance of B?
(c) Identify D. -
A milkman is very upset one morning as his cow refuses to give milk, The milkman's wife gets the calf from the shed. On fondling by the calf, the cow gave sufficient milk Describe the role of endocrine gland and pathway associated with the response.
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On an education trip to Uttranchal, Ketki and her friends observed that many local people were having a swelling in their neck. Please help Ketki and her friends to find out the solutions to the following questions.
(a) Which probable disease are these local people suffering from?
(b) What is the cause of the disease?
(c) Whatis the effect of this condition on pregnancy?
(d) What is exopthalmic goitre? -
A sample of urine was diagnosed to contain high amount of glucose and ketone bodies. Based on this observation, answer the following questions.
(a) Name the endocrine gland and the hormone, related to this disorder.
(b) Name the cells targetted by this hormone.
(c) What term is given to this condition?
(d) How can it be treated? -
The following flow chart depicts the mechanism of action of the peptide hormone, follicle-stimulating hormone (FSH). Fill in the blanks (A), (B), (C), (D), (E) and (F) in the flow chart.
Case Study
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Answers
Chemical Coordination and Integration Case Study Questions With Answer Key Answer Keys
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(a) -F-Adrenalgland
(b) -A-Pinealgland
(c) - D - Thymus
(d) - B - Pituitary
(e) - E - Pancreas
(f) - H -Testis. -
(a) (1) Arepresents the hypothalamic neurons.
(2) They secrete the following hormones:
(i) Gonadotropin-releasing hormone
(ii) Somatostatin
(b) B, the portal circulation transports the hypothalamic hormones to the anterior pituitary.
(c) D is posterior pituitary. -
(a) The fondling by the calf stimulates the posterior pituitary to release oxytocin, which is synthesised by the hypothalamus, but stored in the posterior pituitary.
(b) The hormone, oxytocin acts on the smooth muscles of the mammary glands and causes ejection of milk. -
(a) They are suffering from goitre.
(b) It is caused by dietary deficiency of iodine, leading to hypothyroidism.
(c) Hypothyroidism during pregnancy causes defective development of the foetus leading to cretinism.
(d) It is a form of hyperthyroidism, characterised by protrusion of eye balls. -
(a) (i) Pancreas is the endocrine gland.
(ii) Insulin is the hormone.
(b) Hepatocytes and adipocytes.
(c) Diabetes mellitus.
(d) It can be treated by insulin therapy. -
A. Membrane-bound receptor.
B. Hormone-receptor complex.
C. Second messenger.
D. Cyclic AMP or calcium ions
E. Physiological response.
F. Growth of ovarian follicle.
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