Question:
Which GMO crop plant is having an adverse effect on Monarch butterfly populations?
Which GMO crop plant is having an adverse effect on Monarch butterfly populations?
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The pollen of this Bt crop lands on milkweed leaves eaten by the caterpillars.
Updated On: Nov 12, 2026
- Bt brinjal
- Bt cotton
- Bt corn
- Bt tobacco
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Bt crops carry a cry gene from Bacillus thuringiensis that makes an insecticidal toxin.
Step 2: Effect on monarchs
Bt corn pollen contains the toxin. Wind carries it onto milkweed leaves, which are the only food of monarch caterpillars. Feeding on dusted leaves harms or kills them.
Step 3: Compare the options
Bt cotton, Bt brinjal and Bt tobacco are not the crops linked to this effect.
Step 4: Conclusion
Bt corn adversely affects monarch butterfly populations.
Final Answer:
Bt corn affects monarch butterfly populations. \[ \boxed{\text{(C) }\text{Bt corn}} \]
Bt crops carry a cry gene from Bacillus thuringiensis that makes an insecticidal toxin.
Step 2: Effect on monarchs
Bt corn pollen contains the toxin. Wind carries it onto milkweed leaves, which are the only food of monarch caterpillars. Feeding on dusted leaves harms or kills them.
Step 3: Compare the options
Bt cotton, Bt brinjal and Bt tobacco are not the crops linked to this effect.
Step 4: Conclusion
Bt corn adversely affects monarch butterfly populations.
Final Answer:
Bt corn affects monarch butterfly populations. \[ \boxed{\text{(C) }\text{Bt corn}} \]
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