Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Blue green algae are popular as biofertilizers. Reason (R) : Blue green algae cause algal bloom in polluted water bodies

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Rhizobium leguminosarum is a symbiotic bacterium found in the root nodules of leguminous plants. Reason (R) : They have the ability to fix atmospheric nitrogen.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Cyanobacteria increase the soil fertility and also add organic matter to the soil. Reason (R) : They can fix free nitrogen in the atmosphere.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Methanogens do not produce oxygen. Reason (R) : Methanogens are obligate anaerobic microorganisms.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : An inoculum of curd is used for curdling of milk. Reason (R) : It contains Lactobacillus, which improves nutritional quality by increasing Vitamin B 12 .

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Bottled fruit juices bought from the market are clearer as compared to those made at home. Reason (R) : They are clarified by pectinases and proteases.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Statin is produced by a yeast called Trichoderma polysporum. Reason (R) : It lowers the blood cholesterol level in the body.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Activated sludge should have the ability to settle quickly. Reason (R) : To absorb pathogenic bacteria present in wastewater while sinking to the bottom of the settling tank.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Nucleopolyhedrovirus are useful as they are good biocontrol agents. Reason (R) : They are species-specific, narrow spectrum bioinsecticides.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as: Assertion (A) : Members of the genus Glomus from mycorrhiza. Reason (R) : Mycorrhiza is an association of plants and fungi.

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

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

Assertion (A) is true but reason (R) is false.

Assertion (A) is false but reason (R) is true.

Assertion and Reason Test: Microbes in Human Welfare Free MCQ Practice Test with Solutions

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