CBSE NCERT Solutions for Class 7 Science Chapter 3

NCERT science solutions for class 7 helps the students to understand the topics.The solution is provided below to help 7th standard students understand the concepts more effectively.

CBSE NCERT Solutions for Class 7 Science Chapter 3:

Question-1:

What is meant by the following terms?
(i) Rearing (ii) Shearing (iii) Sericulture

Solution:

(i) Rearing: It means taking care of herds of animals which includes feeding,
grazing, breeding, etc. for economical purpose like meat and other useful products.
(ii) Shearing: The removal of fleece of the sheep along with a thin layer of skin
from its body is called shearing.
(iii) Sericulture: The rearing of silkworms to obtain silk economically is called
sericulture.

Question-2:

You must be familiar with the following nursery rhymes:
(i) ‘Baa baa black sheep, have you any wool.’
(ii) ‘Mary had a little lamb, whose fleece was white as snow
Answer the following:
(a) Which parts of the black sheep have wool?
(b) What is meant by the white fleece of the lamb?

Solution:

(a) The hairy skin i.e. fleece of the black sheep have wool.
(b) White fleece means the white coloured hair of the lamb.

Question-3:

Which of the following does not yield wool?
(i) Yak (ii) Camel (iii) Goat (iv) Woolly dog

Solution:

(iv) Woolly dog