Question:
Smooth leaved and nectarless cotton varieties are NOT affected by .............
Smooth leaved and nectarless cotton varieties are NOT affected by .............
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Plant resistance to pests can vary, and certain varieties are specifically bred to resist common pests like bollworms.
Updated On: Mar 6, 2026
- bollworms
- jassids
- fruit borers
- stem borers
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the resistance in cotton varieties.
Certain cotton varieties are resistant to specific pests. Smooth-leaved and nectarless cotton varieties are known to be less affected by bollworms, a common pest in cotton fields.
Step 2: Analyzing the options.
(A) bollworms: Correct, these varieties are not affected by bollworms due to their structural and chemical defenses.
(B) jassids: Incorrect, jassids may still affect these cotton varieties.
(C) fruit borers: Incorrect, fruit borers can still affect cotton crops.
(D) stem borers: Incorrect, stem borers can attack these varieties as well.
Step 3: Conclusion.
The correct answer is (A) bollworms, as smooth-leaved and nectarless cotton varieties are resistant to these pests.
Certain cotton varieties are resistant to specific pests. Smooth-leaved and nectarless cotton varieties are known to be less affected by bollworms, a common pest in cotton fields.
Step 2: Analyzing the options.
(A) bollworms: Correct, these varieties are not affected by bollworms due to their structural and chemical defenses.
(B) jassids: Incorrect, jassids may still affect these cotton varieties.
(C) fruit borers: Incorrect, fruit borers can still affect cotton crops.
(D) stem borers: Incorrect, stem borers can attack these varieties as well.
Step 3: Conclusion.
The correct answer is (A) bollworms, as smooth-leaved and nectarless cotton varieties are resistant to these pests.
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