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Which of the following is/are not charac...

Which of the following is/are not characteristic features of Asteraceae
(A) Cypsela type of fruit
(B) Syngenesious stamens
(C) Ovary bicarpellary and superior
(D) Placentation marginal
(E) Head type of inflorescence

A

a, b only

B

c and e only

C

e only

D

c and d only

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the options are not characteristic features of the Asteraceae family, we will analyze each statement one by one based on the known characteristics of this plant family. ### Step-by-Step Solution: 1. **Option A: Cypsela type of fruit** - The Asteraceae family is known for producing a type of fruit called cypsela. Therefore, this statement is a characteristic feature of Asteraceae. - **Conclusion:** This option is characteristic. 2. **Option B: Syngenesious stamens** - Asteraceae flowers typically have syngenesious stamens, meaning the stamens are fused together. This is a common feature of the family. - **Conclusion:** This option is characteristic. 3. **Option C: Ovary bicarpellary and superior** - In Asteraceae, the ovary is typically syncarpous (formed from multiple carpels) and inferior. Therefore, stating that it is bicarpellary and superior is incorrect. - **Conclusion:** This option is NOT characteristic. 4. **Option D: Placentation marginal** - Asteraceae generally exhibit basal placentation, not marginal. Therefore, this statement is also incorrect. - **Conclusion:** This option is NOT characteristic. 5. **Option E: Head type of inflorescence** - The inflorescence in Asteraceae is commonly a head (capitulum), which is a defining feature of the family. - **Conclusion:** This option is characteristic. ### Final Answer: The options that are NOT characteristic features of Asteraceae are: - (C) Ovary bicarpellary and superior - (D) Placentation marginal
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