Question

For questions 13 and 14, two statements are given; one labeled assertion(A) and the other labeled
reason(R) Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given
below.
(a) Both A and R are true and R is the correct explanation of the assertion.
(b) Both
A
and R
are true but R
is not the correct explanation of the assertion.
(c) A is true but Ris false
(d) A is false but R is true.
13. Assertion: S.I Unit of relative density is kg/m
7
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Reason: Relative density is the ratio of density of a substance and density of water.
14. Assertion: Mushroom belongs to class fungi.
Reason: Their cell wall is made up of chitin and cellulose.​

Answer 1

The answers for questions 13 and 14 are given below:

13. Assertion: S.I Unit of relative density is kg/m

Reason: Relative density is the ratio of density of a substance and density of water.

(d) A is false but R is true

- As relative density is the ratio of two quantities of same units, it is diemensionless and has no units.

14. Assertion: Mushroom belongs to class fungi.

Reason: Their cell wall is made up of chitin and cellulose.​

(b) Both A and R are true but R is not the correct explanation of the assertion.

- Mushrooms are classified as fungi as they do no contain chlorophyll and obtain their nutrition by metabolizing non living organic matter.