A) cotton
B) sunflower
C) Physalia
D) Calotropis
Correct Answer: B
Solution :
Appendages of some fruits act as a parachute due to which fruit and seeds becomes light weight and remain in air for a longer period and disperse at a good distance. This is called parachute mechanism e.g., sunflower. The seeds of plants like Caloiropis, Gossypium etc. possess a large number of hair which enable them to float in air. Such seeds are described as comas. Physalia has the persistent swollen calyx.
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