Question:
Which one of the following does NOT promote cross pollination?
Which one of the following does NOT promote cross pollination?
Show Hint
Cleistogamous flowers do not open and are always self-pollinated.
Updated On: Nov 12, 2026
- Herkogamy
- Self sterility
- Heteromorphy
- Cleistogamy
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Outbreeding devices prevent self pollination.
Step 2: Devices that promote it
Herkogamy places a barrier between anther and stigma. Self sterility stops a flower's own pollen from working. Heteromorphy needs pollen from a different flower form.
Step 3: Exception
Cleistogamous flowers never open, so they self-pollinate.
Final Answer:
Cleistogamy does not promote cross pollination. \[ \boxed{\text{(D) }\text{Cleistogamy}} \]
Outbreeding devices prevent self pollination.
Step 2: Devices that promote it
Herkogamy places a barrier between anther and stigma. Self sterility stops a flower's own pollen from working. Heteromorphy needs pollen from a different flower form.
Step 3: Exception
Cleistogamous flowers never open, so they self-pollinate.
Final Answer:
Cleistogamy does not promote cross pollination. \[ \boxed{\text{(D) }\text{Cleistogamy}} \]
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