- 1(current)
Q. No.Match the items in column "A' and coloum 'B' and choose the correct answer
| Column I | Column II |
| A. Lady bird | (i) Methano bacterium |
| B. Mycorrhiza | (ii) Trichoderma |
| C. Biological control | (iii) Aphids |
| D. Biogas | (iv) Glomus |
The correct answer is
| A | B | C | D | |
| (1) | ii | iv | iii | i |
| (2) | iii | iv | ii | i |
| (3) | iv | i | ii | iii |
| (4) | iii | ii | i | iv |
Subtopic: Â Chemicals, Enzymes & Other Bioactive Molecules |Â Microbes in Production of Biogas |Â Microbes in Biocontrol Agent |Â Microbes as Biofertilizer |
 92%
Level 1: 80%+
Hints
| Assertion (A): | Biofertilizers are preferred over chemical fertilizers. |
| Reason (R): | Chemical fertilizers are more hazardous to the environment. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: Â Microbes as Biofertilizer |
 90%
Level 1: 80%+
Hints
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Assertion: Azolla pinnata is used as biofertilizer in rice cultivation.
Reason: Azolla performs nitrogen fixation with the help of symbiotic bacterium Bacillus.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
Reason: Azolla performs nitrogen fixation with the help of symbiotic bacterium Bacillus.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false
Subtopic: Â Microbes as Biofertilizer |
 50%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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