Question

Read the following and answer any four questions from 17 (i) to 17 (v) on the

basis of your understanding of paragraph and related study concept.

The outer covering of the cell that is plasma membrane separates the contents of

the cell from its external environment. It also allows the entry and exit of some

materials in the out of the cell. Some substances like carbon dioxide, oxygen,

water etc. can move across the cell membrane by some methods.

i) Which membrane is called selectively permeable? Why?

ii) By what methods carbon dioxide, oxygen & water move across the cell

membrane? (suggest the name of methods)

iii) Most of the water moves out of cell due to exosmosis and the cell shrinks

because if –

a) a cell is placed in hypotonic solution

b) a cell is placed in hypertonic solution

c) a cell is placed in isotonic solution

d) None of the above

iv) Amoeba acquires its food through –

a) Endocytosis b) Exocytosis c) Pinocyotsis d) hectocytosis

v) Write the any one difference between the methods suggested in paragraph​

Answer 1

Answer:

3 c

Explanation:

124690975215797369377

Answer 2

Answer:

c is answer of this question