In the monocotyledonous seeds,the endosperm is separated from the embryo by a distinct layer known as

Assertion $(A) :-$ Liquid endosperm of coconut is multinucleate.
Reason $(R) :-$ Karyokinesis is not followed by cytokinesis during development of liquid endosperm of coconut.

What is the ploidy level of the endosperm in typical angiosperms?

If the number of chromosomes in an endosperm of a seed is $21$,what will be the chromosome number in the secondary nucleus?

The coconut water from tender coconut represents

In an angiospermic plant,endosperm is formed due to the fertilization of the secondary nucleus,but it is absent in some seeds,such as pea,bean,and Phaseolus (moong). This is due to the lack of: