Which of the following is a geocarpic fruit?

The parachute mechanism of fruit dispersal as found in $Compositae$ is due to a structure named:

$A$ dry,indehiscent,single-seeded fruit,developing from a monocarpellary,syncarpous,inferior ovary is known as:

The edible part in a 'sorosis' composite fruit is:

Identify the correct features of Mango and Coconut fruits.
$(i)$ In both,the fruit is a drupe.
$(ii)$ Endocarp is edible in both.
$(iii)$ Mesocarp in Coconut is fibrous,and in Mango it is fleshy.
$(iv)$ In both,the fruit develops from a monocarpellary ovary.
Select the correct option from below:

Coir is obtained from which part of the coconut fruit?