Hello Students are looking for Assertion and Reason Questions Class 8 Science Chapter 2 Microorganisms : Friend And Foe, If yes here we Net Explanations have given Assertion and Reason MCQ for 8th Class Science Chapter 2.
Solved CBSE Class 8 Science Chapter 2 Assertion and Reason Questions – Microorganisms : Friend And Foe. Here we (Net Explanations) working very hard to providing you with the Important Assertion Reason Questions for this Chapter.
Assertion and Reason Questions Class 8 Science Chapter 2 Microorganisms : Friend And Foe
1.) ASSERTION: Milk is turned into curd by bacteria
REASON: curd contains several micro- organisms .of there, the bacterium, Lactobacillus promotes the formation of curd.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
2.) ASSERTION :If you fall ill the doctor maygive you some antibiotic tablets, capsules or injections such as of penicillin.
REASON: The source of these medicines is microorganisms. These medicines kill or stop the growth of the disease-causing microorganisms. Such medicines are called antibiotics.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
3.) ASSERTION: The microorganisms or microbes are cannot be seen with the unaided eye.
REASON: Because microorganisms or microbes are so small in size .
a) Assertion and reason both are correct statement and reason is correct explanation for
assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
4.) ASSERTION:, The body produces antibodies to fight the invader.
REASON: When a disease-carrying microbe enter sour body.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
5.) ASSERTION: The antibodies remain in the body after to fights and kills the invading.
REASON: To protected our body from the disease-causing microbes forever.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
6.) ASSERTION- In your childhood, you must have been given injections.
REASON: To protect yourself against several diseases.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correctexplanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
7.) ASSERTIONS: To prevent own self form communicable diseases which spread by flies always keep food covered.
REASON: Housefly act like one such carriers of disease causing microbes. The flies sit on the garbage and animal excreta. Pathogens stick to their bodies. When these flies sit on uncovered food they may transfer the pathogens. Whoever eats the contaminated food is likely to get sick.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
8.) ASSERTION: Itis very important that we preserve food to prevent it from being spoilt.
REASON: Food poisoning could be due to the consumption of food spoilt by some microorganisms. Microorganisms that grow on our food sometimes produce toxic substances. These make food poisonous causing serious illness and even death.
a) Assertion and reason both are correct statement and reason is correct explanation for
assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
9.) ASSERTION: When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again. Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.
REASON: The percentage of nitrogen in the atmosphere remains more or less constant.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
For more ⇒ CBSE Notes for Class 8 Science
For further update, follow our page ⇒ Net Explanations
Why all answers are a option only
Why in the world r all answers option a it is too obvious and boring I mean i can’t write option a for every questions in my exam can i, My teach would literally give me a one day of lecture
The question are really very good . Your website helped me alot for my exams for assertion reasoning. I really liked it.
True. Even statements are not making sense.