Question

Describe the stages in embryo development in a dicot plant.

Answer 1

Hint: An embryo is the early stage of advancement of a multicellular life form. In common, in life forms that duplicate sexually, embryonic advancement is the portion of the life cycle that starts fair after fertilization and proceeds through the arrangement of body structures, such as tissues and organs.

Complete answer:
Development of Embryo :
1.The embryo is formed at the micropylar end present in the developing life form, where there is an arrangement of the zygote.
2.The zygote is responsible for giving rise to the embryo, later onwards it develops into globular structure.
3.A typical structure of dicot embryo has an embryonal axis along with two cotyledons.
4.The tip of the embryonal axis on the top of cotyledons is known as epicotyl.
5.It is known to have plumule or shoot tip.
6.The part in the lower section is called the hypocotyl. It is known to contain radicals (root tip).

The meat of coconut meat is actually cellular endosperm. Acoraceae are known to have cellular endosperm development, whereas the rest of monocots are known to have helobial. The helobial endosperm formation process takes place where a cell wall formation takes place between the first two nuclei and after that half is known to develop into endosperm along with the cellular pattern of growth while the rest half develops along with the nuclear pattern.

Note: The endosperm formation takes place during the process of double fertilization where one of the two sperm is known to enter into the embryo sac, fuses with two polar nuclei. The development of endosperm takes place before the embryo formation because the endosperm cell is known to provide nutrition for the development of the embryo.