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Byju's Answer
Standard XII
Biology
Sterilization
Consider the ...
Question

Consider the following statements and select the option stating which ones are true (T) and which ones are false (F).
(i) There are many side effects of tubectomy and vasectomy.
(ii) Purpose of tubectomy is to prevent egg formation.
(iii) Contraceptive oral pills help in birth control by preventing ovulation.
(iv) Genital warts is a sexually transmitted disease caused by herpes virus.
(v) In India, there is rapid decline in infant mortality rate and MMR.

A
(i) T, (ii) F, (iii) T, (iv) F, (v) - F
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B
(i) F, (ii) F, (iii) F, (iv) T, (v) - T
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C
(i) T, (ii) T, (iii) T, (iv) F, (v) - F
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D
(i) F, (ii) F, (iii) T, (iv) F, (v) - T
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Solution

The correct option is D (i) F, (ii) F, (iii) T, (iv) F, (v) - T
There are no side effects of tubectomy and vasectomy. Purpose of tubectomy is to prevent egg transport. Contraceptive pills help in birth control by preventing ovulation. Genital warts is a sexually transmitted disease caused by human papilloma virus (HPV). In India, there is rapid decline in - IMR and MMR due to better health facilities.

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Q.

Consider the following statements and select the option correctly identifying them as true (T) or false (F).

i. There are many side effects of tubectomy

ii. Purpose of tubectomy is to prevent sperm formation

iii. Contraceptive birth pills help in preventing ovulation thus preventing pregnancy

iv. Genital warts are caused exclusively by the herpes virus

v. AIDS can be spread by hugging, shaking hands with an infected individual


Q. Which of the following statements are incorrect?

(i) Vitamin A helps to prevent night blindness.
(ii) Vitamin C prevents rickets.
(iii) Vitamin K helps in clotting of blood.
(iv) Iron helps to prevent goitre.
(v) Potassium helps to regulate fluid balance in our body.
Q. Which of the following statement(s) about (II), (III), (IV) and (V) with respect to (I) is/are true?

Q.

Question 5

Read the following statements about diseases.

(i) They are caused by germs.

(ii) They are caused due to the lack of nutrients in our diet.

(iii) They can be passed on to another person through contact.

(iv) They can be prevented by taking a balanced diet.

Which pair of statements best describes a deficiency disease?

(a) (i) and (ii) .

(b) (ii) and (iii)

(c) (ii) and (iv)

(d) (i) and (iii)


Q. Which of the following statements are correct regarding surgical methods of contraception?
(i) These are generally advised to the male/female partner as a terminal method to prevent any more pregnancies.
(ii) Surgical procedure in male is called tubectomy and that in the female,
vasectomy.
(iii)
Reversibility is easily possible.
(iv)
They block gamete transport and thereby prevent conception.
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