Question

TEST YOUR LEARNING
A Tick (/) the correct options.
1. Cysts can withstand in unfavourable conditions; to do this they have an outer
a. cell membrane b. nucleus
c. protective coat d. cell wall
2. Which one of the following is not a bacterial infection?
a tetanus
b. whooping cough c. measles
d. typhoid
3. If the water in a lake has greenish colour and a fishy odour, it probably contains
a. protozoa
b. fungi
c. bacteria
d. algae
4. In legumes, the root nodules contain the bacterium
a. Bacilli
b. Rhizobium
c. Diplococcus
d. Spirocheta
5. Which of the following is responsible for making bread soft and fluffy?
a. sugar
b. finely ground flour
c. alcohol given off during fermentation of sugar
d. CO2 gas released during fermentation of sugar
6. Lactobacillus is a
a. protozoan
b. bacterium
c. fungus
d. virus
7. Which of the following is an antibiotic?
a. vaccine
b. alcohol
c. chlorella
d. penicillin
8. Salting of food items helps in preservation by
a. lowering temperature
b. killing microbes
c. increasing acidity
d. removing water from the cells
9. Which of the following is used to make bread soft and porous?
b. yeast
c. chlorella
a. bacteria
d. aspergillus
10. Which substance present in the blood helps to provide immunity?
c. antibiotic
d. vaccine
a. antigens
b. antibody​

Answer 1

Answer:

1 c

2 a

3d

4 b

5 c

6 b

7a

9b

10 c

Explanation:

hope it's helpful to you

Answer 2

Answer:

1 a 2d 3 d 4 c 5 c 6 d 7 b 8 c 9 d 10 d