Neet Solved Paper 2013 Question 9
Question: In China rose the flowers are
Options:
A) actinomorphic, hypogynous with twisted aestivation
B) actinomorphic, epigynous with valvate aestivation
C) zygonnorphic, hypogynous with imbricate aestivation
D) zygomorphic, epigynous with twisted aestivation
Show Answer
Answer:
Correct Answer: A
Solution:
- Actinomorphic (star-shaped) can be divided into 3 or more identical sectors, which are related to each other by rtation about the centre of the flower, e.g., China rose. Zygomorphic flowers can be divided by only a single plane into two mirror image halves, e.g., orchids. Valvate aestivation The sepals or petals in a whorl just touch one another at the margin, e.g., Caltrops. Twisted aestivation One margin of the appendage overlaps that of the next one, e.g., China rose. Imbricate aestivation the margins of sepals or petals overlap but not necessarily in specific direction, e.g., Cassia. For further detail refer to ans.
