Page 1 - 3.Home Assignment ( Obj & Subj) - Changes at puberty-I

SAI International School
Subject- Biology, Class-VIII
Topic- Reaching the age of adolescence
Subtopic- Changes at puberty-I
Module- 19
Home Assignment

OBJECTIVE (MCQ)
Q.1 A ten year old boy is 120cm tall. If the present height of the boy is 84% of his full
height, calculate the full height which the boy will eventually reach at the end of
growth period.

(a) 162cm
(b) 152.8cm
(c) 142.8cm
(d) 140.6cm

Q.2 Factor on which the height of a person depends.
(a) Exercise.
(b) Genes inherited from the parents.
(c) Environmental factors, such as nutrition.
(d) All the above are correct

Q.3 Which is the most conspicuous change (clearly visible change) in boys and girls
during puberty?
(a) Change in voice.
(b) Increase in height.
(c) Change in body shape and appearance.
(d) Development of sex organs

Q.4 Identify the correct statement-
(a) Height increases during puberty.
(b) Voice changes during puberty.
(c) Body shape changes during puberty.
(d) All the above are correct.

Q.5 Identify the incorrect statement-
I. The grown-up boys have a bigger voice box in their throat whereas grown
up girls have a smaller voice box in their throats.
II. Environmental factors such as nutrition and exercise, don’t play any role in
increase in height during puberty.
III. The genes inherited from parents, is the only factor responsible for increase
in height during puberty.
(a) I
(b) III
(c) II,III
(d) I,II,III