The number of chromosomes in the leaf cells of a male plant is 40 and in thestem cells of a female plant is 60. If they are artificially hybridised, what will bethe number of chromosomes in the endosperm

The number of chromosomes in the endosperm of a plant is typically triploid, meaning it has three sets of chromosomes. This is because it is formed as a result of double fertilization, where one sperm cell fertilizes the egg cell to form the zygote, and another sperm cell fertilizes the two polar nuclei to form the endosperm.

In this case, if a male plant with 40 chromosomes is hybridized with a female plant with 60 chromosomes, the endosperm will have a total of 160 chromosomes. This is calculated as follows:

• The male contributes one set of chromosomes (40).
• The female contributes two sets of chromosomes (60 x 2 = 120).

So, 40 (from the male) + 120 (from the female) = 160 chromosomes in the endosperm.