Q5 of 28 Page 53

The most conspicuous visible change that occurs in boys during puberty is:

There will be a sudden increase in height which is the most prominent visible change in boys at the time of puberty. The long bones present in arms and legs elongate which make them appear tall.

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3

Given below are events that lead to pregnancy and development of the embryo.

(i) Fertilization of egg


(ii) Maturation of egg


(iii) Release of egg


(iv) Embedding of the embryo in the thickened uterine wall.


Which of the following options gives the correct order of sequence in which they occur?

 4

For the metamorphosis of tadpoles which of the following elements must be available in water?

 6

Structures present in a cell which is responsible for determination of the sex of a baby is

 7

Unscramble the underlined words in the following sentences.

(a) Reproductive life of a woman lasts from hacreemn to spauoemen.


(b) The development of a caterpillar to an adult butterfly is termed as poommertaissh.


(c) The overgrowth of sumselc in xalnyr leads to the hoarse voice in adolescent boys.


(d) Dannalier helps the body to adjust and fight the stress.