Seeds and Fruits Formation in a Plant
Seed Formation:
Ripened ovule after fertilization is called seed. The seeds are the embryos of flowering plants in dormant stage. Seeds provide protection and nourishment to the embryo. A seed has three parts:
- i) Seed Coat: – Outmost covering is called testa and inner layer is called tegmen. Testa and tegmen form seed coat.
- ii) The Embryo: – Embryo is developed from zygote through mitosis It has three parts:
- A radicle is an embryonic bud which grows to form the stem.
- A plumule is an embryonic bud which grows to form the root.
- One or two Cotyledons store the food of endosperm in some seeds and become thick.
iii) Endosperm: – It is a food storing tissue when food is not stored in the cotyledons.
Fruit Formation:
After fertilization ovary wall becomes fleshy or scaly and forms fruit. Fruit protect seed and help in dispersal of the plant.
Just the other day, the idea of an “almost free e-book” got a new inspirational boost. A fairly successful and very popular company in the CIS, PocketBook, which produces e-books, and the phone manufacturer Alcatel decided to release a device that will serve as both a phone and an e-book. Is it really about a smartphone with e-ink, which has already been released by the Russian Yota at a daring price of $ 500 (approximately)? So far, there are no rumors about the price of the PocketBook device – Alcatel, but there are rumors that it will be very cheap.