Chapter 44.2, Problem 1CYL

Summary Introduction

To draw:

The structure of a complete flower. Also, to explain the function of each part.

Introduction:

A flower is the reproductive part of an angiospermic plant. Flowers consist of many parts; sepals, petals, pedicel, thalamus, androecium (male reproductive part), and gynoecium (female reproductive part). Some flowers contain both male and female reproductive parts and are bisexual or monoecious. Some flowers contain either male or female reproductive part and are considered dioecious.

Summary Introduction

To describe:

The development of male and female gametophytes in flowering plants.

Introduction:

Angiosperms are vascular flowering plants. There are about $300,000$ species of angiosperms. It is the most diverse group in kingdom Plantae. $80\%$ of the total living green plants belong to angiosperms. Double fertilization is the characteristic feature of angiospermic plants.

Summary Introduction

To explain:

The processes of pollination and double fertilization.

Introduction:

Pollination is the process of transfer of pollen grains (male gametophyte) from another of the stamen to the stigma of the carpel. Pollination is of two types; self-pollination and cross-pollination. Pollination is required in plants for fertilization to take place.