Question:
Zygomorphic flowers showing imbricate aestivation
Zygomorphic flowers showing imbricate aestivation
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Bean shows vexillary aestivation (a specialized form of imbricate aestivation), while Canna exhibits true imbricate aestivation.
Updated On: Jun 12, 2026
- Calotropis and Bean
- Cassia and Gulmohar
- Cassia and Citrus
- Canna and Bean
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The Correct Option is D
Solution and Explanation
Concept:
A flower is called zygomorphic when it can be divided into two equal halves only in one particular plane.
Imbricate aestivation is a type of arrangement in which margins of sepals or petals overlap one another but not in any definite pattern.
Step 1: Understand examples of zygomorphic flowers. Examples include:
• Bean
• Pea
• Gulmohar
• Cassia
• Canna
Step 2: Understand imbricate aestivation. Imbricate aestivation occurs in:
• Cassia
• Gulmohar
• Canna Bean shows vexillary aestivation, which is a special type of imbricate aestivation.
Step 3: Analyze the options. Calotropis possesses valvate aestivation. Hence option (A) is incorrect. Citrus shows twisted aestivation. Hence option (C) is incorrect. Bean exhibits zygomorphy and vexillary (modified imbricate) aestivation. Canna exhibits zygomorphy and imbricate aestivation. Therefore both satisfy the condition.
Step 4: Final answer. Hence option (D) is correct.
Step 1: Understand examples of zygomorphic flowers. Examples include:
• Bean
• Pea
• Gulmohar
• Cassia
• Canna
Step 2: Understand imbricate aestivation. Imbricate aestivation occurs in:
• Cassia
• Gulmohar
• Canna Bean shows vexillary aestivation, which is a special type of imbricate aestivation.
Step 3: Analyze the options. Calotropis possesses valvate aestivation. Hence option (A) is incorrect. Citrus shows twisted aestivation. Hence option (C) is incorrect. Bean exhibits zygomorphy and vexillary (modified imbricate) aestivation. Canna exhibits zygomorphy and imbricate aestivation. Therefore both satisfy the condition.
Step 4: Final answer. Hence option (D) is correct.
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