Post fertilization modifications

Post fertilization modifications:

After fertilization, the sepals, stamens, petals, styles and stigma generally wither and fall off. The calyx might persist (example: tomato, brinjal and so on) and even exhibit growth (example: Physalis). The zygote undergoes a number of mitotic divisions and builds up a multicellular embryo. The primary endosperm nucleus too undergoes mitotic division to form a food laden tissue termed as endosperm. The ovules mature into seeds and the ovary having the ovules enlarges and forms the fruit.

Parts before fertilization and their Parts after fertilization

A. Ovary: fruit

B. Ovary wall: pericarp

C. Ovule: seed

D. Funicle: stalk of the seed

E. Hilum: hilum

F. Nucellus: perisperm

G. Outer integument: testa-Seed Coat

H. Inner integument: tegmen-Seed Coat

I. Micropyle: micropyle

J. Fertilized egg: Emdosperm

K. Synergids: Degenerate

L. Fertilized Secondary nucleus: Degenerate

M. Antipodal cells: Degenerate  

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