Petals in the flowers of cotton (Gossypium sp), China rose (Hibiscus rosa sinensis), etc, show twisted aestivation. In this type of aestivation, a regular overlapping of petals occurs where one margin of each petal overlaps with the next one petal. 
Aestivation of petals in the flower of cotton is correctly shown in
Held on 30 Apr 2010 · Verified 9 Jul 2026.




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Which of the following is an example of a zygomorphic flower?
In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called :
Given below are two statements: Statement I: In a floral formula $\oplus$ stands for zygomorphic nature of the flower, and $\underline{G}$ stands for inferior ovary. Statement II: In a floral formula $\oplus$ stands for actinomorphic nature of the flower and $\underline{G}$ stands for superior ovary. In the light of the above statements, choose the correct answer from the options given below:
Match List I with List II : $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Scutellum} & \text{(i)} & \text{Persistent nucellus} \\\hline \text{B.} & \text{Non-albuminous seed} & \text{(ii)} & \text{Cotyledon of Monocot seed} \\\hline \text{C.} & \text{Epiblast} & \text{(iii)} & \text{Groundnut} \\\hline \text{D.} & \text{Perisperm} & \text{(iv)} & \text{Rudimentary cotyledon} \\\hline\end{array}$ Choose the option with all correct matches.
Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures (a) and (b) 
Work through every NEET UG Morphology of Flowering Plants PYQ, year by year.