In coconut, the dispersal of fruit is due to

Correct option is A

The correct answer is (a) mesocarp

Explanation:
• A coconut physically represents a fibrous drupe. The successful geographical dispersal of the coconut fruit across oceans is strictly facilitated by its mesocarp.
• The mesocarp is the thick, fibrous middle layer (husk) that firmly traps massive amounts of air, rendering the heavy coconut extremely buoyant and allowing it to float on ocean currents for months.

Information Booster:
• Hydrochory is the botanical term describing seed dispersal purely by water.
• The hard inner shell enclosing the edible seed is called the endocarp, providing rigorous protection from salt water.

Additional Knowledge:
epicarp (Option b)
• The epicarp is just the very thin, smooth, outer green or brown skin of the fruit; it provides a waterproof seal but not the actual buoyancy.
endocarp (Option c)
• The hard, stony inner shell protects the seed but is intensely dense and does not assist in floating.
curved hooks (Option d)
• Hooks are utilized by plants like Xanthium for zoochory (dispersal by hitching onto animal fur), not water dispersal.
None of the above/More than one of the above (Option e)
• Incorrect, as mesocarp is botanically the definitive answer.

So the correct answer is (a)