When a diploid female plant is crossed with a tetraploid male,the ploidy of endosperm cells in the resulting seed is

The coconut water and the edible part of coconut are equivalent to which of the following?

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:

In which of the following plants is the endosperm completely consumed by the developing embryo before seed maturation?

If the number of chromosomes in the leaf of Capsella is $46$,then the number of chromosomes in the endosperm will be ........

If the number of chromosomes in the endosperm of an angiosperm is $30$,what will be the number of chromosomes in the nucellus?