NCERT Chapter Solution and other Q & A
![]() |
Virus (source:openclipart) |
Q1. Fill in the blanks:
Answer:
(a) Microorganisms can be seen with the help of a microscope.
(b) Blue-green algae fix nitrogen directly from air to enhance the fertility of the soil.
(c) Alcohol is produced with the help of yeast.
(d) Cholera is caused by Bacteria.
(a) Microorganisms can be seen with the help of a microscope.
(b) Blue-green algae fix nitrogen directly from air to enhance the fertility of the soil.
(c) Alcohol is produced with the help of yeast.
(d) Cholera is caused by Bacteria.
Q2. Tick the correct answer:
(a) Yeast is used in the production of
(i) sugar
(a) Yeast is used in the production of
(i) sugar
(ii) alcohol
(iii) hydrochloric acid
(iv) oxygen