The Flower — Chapter Summary
ICSE · Class 9 · Biology
Summary of The Flower for ICSE Class 9 Biology. Key concepts: A flower is a specialized, The floral parts are arranged and Sepals form the calyx and.
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Overview
Flower is a specialized shoot in which leaves are modified into floral structures. In flowering plants, the flower carries out reproduction and is often the most beautiful and conspicuous part of the plant. Its parts are arranged on a cup-shaped thalamus in four whorls: calyx, corolla, androecium, a
Key Concepts
A flower is a specialized shoot
A flower is a specialized shoot in which leaves are modified into floral structures. The flower stalk is called the pedicel, and some flowers have no
The floral parts are arranged
The floral parts are arranged in four whorls on the thalamus. The first whorl is the calyx made of sepals, the second is the corolla made of petals, t
Sepals form the calyx and
Sepals form the calyx and are usually green. They protect the young flower bud and may also perform photosynthesis when green. Petals form the corolla
The androecium is the male reproductive
The androecium is the male reproductive whorl. Each stamen has a threadlike filament and a bilobed anther. The anther is usually two-lobed with two po
The gynoecium is also called
The gynoecium is also called the pistil. It is made of one or more carpels. Each carpel has three parts: stigma, style, and ovary. The stigma receives
Learning Objectives
- Understand the basic structure of a bisexual flower
- Identify the four floral whorls and their functions
- Distinguish between complete, incomplete, bisexual, unisexual, and neuter flowers
- Describe the roles of sepals, petals, stamens, and carpels
- Recognize special terms such as bract, nectary, perianth, epicalyx, inflorescence, and placentation
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