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BIOLOGY [3 marks Question Answer]

Endocrine System and Adolescence · ICSE STD 8 (ICSE - English Medium). 3 questions.

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[3 marks Question Answer]

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Question 13 Marks
Name the source and the function of each of the following hormones :
Hormone Source Function
$(a)$ Glucagon    
$(b)$ Thyroxine    
$(c)$ Adrenaline    
$(d)$ Insulin    
$(e)$ Cortisone    
Answer
Hormone Source Function
$(a)$ Glucagon Pancreas Breakdown of glycogen to glucose. Raises sugar in the blood.
$(b)$ Thyroxine Thyroid gland Control of metabolic rate
$(c)$ Adrenaline Adrenal gland Prepare the body to face emergency, stress
$(d)$ Insulin Pancreas Regulation of sugar in blood.
$(e)$ Cortisone Adrenal cortex Regulates carbohydrate metabolism. Its deficiency causes Addison’s disease.
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Question 23 Marks
Match the items in Column $A$ with those in Column $B$. Column  $A$  Column $B$
Column A Column B
$(a)$ Cretinism $(i)$ Pituitary gland
$(b)$ Diabetes mellitus $(ii)$ Under the development of infant
$(c)$ Increased metabolic rate $(iii)$ Oversecretion of thyroxine
$(d)$ Simple goitre $(iv)$ Insufficient iodine in food
$(e)$ Growth hormone $(v)$ Insufficient insulin in the blood.
Answer
Column A Column B
$(a)$ Cretinism $(ii)$ Under the development of an infant
$(b)$ Diabetes mellitus $(v)$ Insufficient insulin in the blood.
$(c)$ Increased metabolic rate $(iii)$ Oversecretion of thyroxine
$(d)$ Simple goitre $(iv)$ Insufficient iodine in food
$(e)$ Growth hormone $(i)$ Pituitary gland
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Question 33 Marks
In the table given below, fill in the blanks by naming endocrine glands, the hormones they secrete, and the function they perform, in a normal person.
S.No. Name of the gland produced Function
$1.$ Thyroid    
$2.$   Insulin  
$3.$     Preparing the body for action
$4.$   $(i)$ Growth hormone
$(ii)$ Thyroid-stimulating hormone		  
Answer
S.No. Name of the gland produced Function
$1.$ Thyroid Thyroxine Control of metabolic rate
$2.$ Pancreas Insulin Regulation of sugar in the blood.
$3.$ Adrenal Adrenaline and cortisone Preparing the body for action
$4.$ Pituitary $(i)$ Growth hormone
$(ii)$ Thyroid$-$stimulating hormone		 $(i)$ For growth
$(ii)$ Stimulates thyroid gland to secrete thyroxine
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[3 marks Question Answer] - BIOLOGY STD 8 Questions - Vidyadip