Question

Coconut seeds are dispersed by Hydrochory (dispersal by water). Mention the part of the fruit whose modification helps in this mechanism.

Answer 1

Hint: Hydrochory is seed spread by water. Seeds will disperse by rain or ice or be submerged in water. Seeds spread by water ought to have the power to float and resist water injury. They typically have hairs to help with enlargement and floating.

Complete answer:
Coconut seeds are spread by floating within the water and therefore the fibrous mesocarp that gets changed in coconut helps the fruit to float because it becomes lightweight in weight in water and it's ready to cowl an outsized distance. The mesocarp (from Greek: meso-, "middle" and carp-, "fruit") is that fleshy middle layer of the cover of a fruit; it's found between the seed vessel and therefore the endocarp. It's sometimes the part of the fruit that's devoured. The middle layer or mesocarp of the fruit wall is liable for the colour of each ripe and unripe fruit. The cells of the mesocarp contain plastids, that within the unripe fruit sometimes contain chlorophyll. In cocos, Nucifera (coconut), the epicarp is membranous, the mesocarp is fibrous (hence, known as fibrous fruit and yields coir) and therefore the endocarp is stony. An untouched coconut has 3 layers. The outer layer, which is often swish with a light-green colour, is termed the exocarp. A consecutive layer is that fibrous husk, or mesocarp, that ultimately surrounds the onerous woody layer known as the endocarp. The stone surrounds the seed.

Note: Hydrochory, or the passive spread of organisms by water, is a vital means of propagule transport, particularly for plants. Spread by water might even influence community composition in several landscape parts, leading to landscape-level patterns.