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Angiosperm Plant Body - Botany - Lecture Slides

Slides, Botany

Post: January 9th, 2013
Description
These are the important key points of lecture slides of Botany are:Angiosperm Plant Body, Structure and Development, Formation of Embryo, Mature Embryo and Seed, Embryo to Adult, Outer Layers of Diploid, Wall of Megasporangium, Megagametophyte of Angiosperms, Embryo Development, Embryo Proper
These are the important key points of lecture slides of Botany are:Angiosperm Plant Body, Structure and Development, Formation of Embryo, Mature Embryo and Seed, Embryo to Adult, Outer Layers of Diploid, Wall of Megasporangium, Megagametophyte of Angiosperms, Embryo Development, Embryo Proper
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prakash

prakash
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Contents
The Angiosperm Plant Body • Structure and development – Formation of embryo – Mature embryo and seed – Embryo to adult Docsity.com In most angiosperms, the ovule consists of three layers of tissue: 1.Integuments - two outer layers of diploid (2N) tissue that will develop into the seed coat. 2.Nucellus - the wall of megasporangium, also diploid (2N). 3.Embryo sac - also call the megagametophyte of angiosperms, consists of only 7 cells. Contains 8 haploid nuclei in all. Docsity.com Docsity.com “Polarity” -Apical- basal pattern - Radial pattern Docsity.com Embryo development • Orderly cell division • Differentiation leads into two distinct parts – Embryo proper – The suspensor Before this stage is reached the developing embryo is referred to as the proembryo Becomes food nourishing component Docsity.com Docsity.com Stage of embryo development preceding cotyledon development • Globular stage- embryo proper (proembryo) is spherical • Heart stage (dicot..

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