To draw: The structure of mature angiosperm and a mature gymnosperm with its ploidy (1 n , 2 n , 3 n ) and its role in seed germination and development. Concept Introduction: Angiosperm is a group of plants that produce flowers and their seeds are covered by fruits. Gymnosperms are those plants that are non flowering plants and their seeds are naked without any covering by a fruit. Ploidy means the set(s) of chromosomes in any organism or any structure. It is denoted by alphabet “ n ” 1 n means haploid that is it contains single set of chromosomes, 2 n means diploid and it contain two sets of chromosomes and so on. Pictorial representation: Fig. 1: The angiosperm and gymnosperm seeds and their ploidy of each structure.

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Chapter 30, Problem 5SA

Summary Introduction

To draw:

The structure of mature angiosperm and a mature gymnosperm with its ploidy (1n, 2n, 3n) and its role in seed germination and development.

Concept Introduction:

Angiosperm is a group of plants that produce flowers and their seeds are covered by fruits. Gymnosperms are those plants that are non flowering plants and their seeds are naked without any covering by a fruit. Ploidy means the set(s) of chromosomes in any organism or any structure. It is denoted by alphabet “n” 1n means haploid that is it contains single set of chromosomes, 2n means diploid and it contain two sets of chromosomes and so on.

Pictorial representation:

Fig. 1: The angiosperm and gymnosperm seeds and their ploidy of each structure.

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