what is the ploidy of endosperm

Ploidy Breeding - An organism, in which number of complete chromosome sets is more than the diploid number is called polyploid. It is usual practice to express the chromosome number of an organism in diploid, symbolically represented by 2n. In all sexually propagated crops, such expressio..

An organism, in which number of complete chromosome sets is more than the diploid number is called polyploi..

Post Fertilisation Changes - After fertilization, the zygote undergoes a number of mitotic divisions and form a multicellular embryo. The primary endosperm nucleus also passes through a series of mitotic divisions and form a mass of endosperm cells which provide nourishment to t..

Mutations are sudden heritable changes brought about by the composition of a gene or a chromosome. Accordingly, it can be a gene mutation or a chromosomal mutation. Sometimes, there may be just a change in the chromosome number causing a variation. It is called as ploidy or genomatic mut..

In this type of endosperm, the nuclear divisions are followed by wall formation with the result that the embryosac may have several chambers. Some of the chambers may have more than one nucleu..

This group includes angiosperms in which the seed bears only one cotyledon. The leaves exhibit parallel venation. It is divided into the following seven series. Microspermae: Ovary is inferior, seeds are minute and non-endospermic. Epigynae: Ovary inferior, seeds are large and ..

Crop improvement by deliberate attempt to cross two parents of desirable characters to incorporate such characters in next generations is called breeding. The entire process of pollination, fertilization and regeneration is kept under control and selected parents are allowed to reproduce only with ..

Breeding - Crop improvement by deliberate attempt to cross two parents of desirable characters to incorporate such characters in next generations is called breeding. The entire process of pollination, fertilization and regeneration is kept under control and selected parents are allowed to reproduce..

Androecium is the male reproductive part of the flower. The individual units of androecium are called the . Stamens have four-lobed anthers that produce the male gametes within the pollen grains. Gynoecium is the female reproductive part of the flower. The individual units are called the carpe..

On reaching the stigma, the pollen grains put out a tube. This is called germination of the pollen grain. The tip of the tube contains the male nuclei. The tube grows and enters the ovule where it bursts at the tip releasing the male gametes. One of the male gametes fuses with the egg, the fem..