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Question-1 __________ marks the end of reproductive phase in the life of human female.

(A) Menstruation	(B)Menarche
(C)Menopause	(D)Ovulation

Question-2 Human male produces

(A) One type of sperm.	(B) Two types of sperms.
(C)Three types of sperms.	(D)Four types of sperms.

Question-3 Adolescent age is between the years -

(A) 11 to 18	(B)11 to 25
(C)10 to 15	(D) 8 to 20

Question-4 Chemicals produced by ants which help them to coordinate each other are known as

(A) Hormones	(B)Enzymes
(C)Coordinators	(D)Pheromones.

Question-5 We need to include __________ in our diet so that we get enough iodine to produce thyroxin.

(A) Fruits and junk foods.	(B) Sea foods and vegetables.
(C)Chips and colas	(D)Egg and meat

Question-6 The Master endocrine gland is ______ which produces_______.

(A) Thyroid gland , Thyroxin	(B)Pancreas , Insulin
(C)Adrenal gland , Adrenaline	(D)Pituitary gland , growth hormone.

Question-7 Sebaceous glands produce -

(A) Sweat	(B) Milk
(C)Hormone	(D) Oil

Question-8 Drastic changes which develop in a tadpole converting, it into an adult frog is known as

(A) Mounting	(B) Ecdysis
(C)Metabolism	(D)Metamorphosis

Question-9 How are the last pair of chromosome different in their function in Human beings?

(A) They give us strength.	(B) They influence our behaviour
(C)They gives us long life.	(D)They influence/ determine our sex.

Question-10 High blood glucose level may be due to

(A) Low insulin production	(B)High insulin production
(C)High thyroxin production	(D)High Oestrogen production

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Std 8

CBSE

Practice in Related Chapters
Reproduction in Animals
Microorganisms: Friend and Foe
Reaching the Age of Adolescence
Cell - Structure and Functions
Conservation of Plants and Animals
Crop Production & Management