- 1(current)
Q. No.Consider the given two statements:
| Assertion (A): | Toxic insecticidal proteins present in protein crystals formed by B. thuringiensis do not kill the Bacillus. |
| Reason (R): | The Bt toxin protein exists as inactive protoxin in the Bacillus. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True; (R) is False |
| 3. | (A) is False; (R) is False |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Bt Crops |
92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Genetic modification has:
1. Only I, II and III are correct
2. Only I, II and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | made crops more tolerant to abiotic stresses (cold, drought, salt, heat). |
| II: | reduced reliance on chemical pesticides (pest-resistant crops). |
| III: | enhanced nutritional value of food, e.g., golden rice, i.e., Vitamin ‘A’ enriched rice. |
| IV: | enabled plants to fix atmospheric nitrogen on their own. |
2. Only I, II and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Bt Crops |
71%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion(A): | Bt toxin proteins do not harm the bacillus. |
| Reason (R): | The bacillus protects its gut by methylation |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Bt Crops |
66%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Proteins coded by genes cryIAC and cryIIAb control corn borer. |
| II: | Proteins encoded by gene cryIAb controls cotton bollworms. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Bt Crops |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
Choose the correct option.
| Assertion (A): | Bt cotton plants are resistant to insect pests like the bollworm. |
| Reason (R): | The Bt toxin produced in these plants is harmless to mammals and to bacillus itself. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Bt Crops |
72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.