A flower that does not have a stalk and is directly attached to the stem is called a sessile flower.
Definitions [5]
Define.
Inflorescence
A specialised axis or branch over which flowers are produced or borne in definite manner is known as inflorescence.
Definition: Pedicellate Flower
A flower that has a stalk called pedicel for support is called a pedicellate flower.
Definition: Bisexual Flower
A flower that has both androecium (male part) and gynoecium (female part) in the same flower is called a bisexual flower.
Example: Hibiscus
Definition: Sessile Flower
Definition: Unisexual Flower
A flower that has only one reproductive whorl (either androecium or gynoecium) is called a unisexual flower.
- If it has only androecium: male flower
- If it has only gynoecium: female flower
Example: Papaya
Key Points
Key Points: Sexual Reproduction in Plants
- Sexual reproduction involves the fusion of male and female gametes from two parents to form a diploid zygote.
- A flower is the reproductive structure in plants that produces gametes and enables fertilisation.
- A flower has four whorls: calyx, corolla, androecium (male), and gynoecium (female).
- It includes meiosis for gamete formation and fertilisation, producing genetically different offspring.
- Sexual reproduction occurs in three stages: pre-fertilisation, fertilisation, and post-fertilisation.
Important Questions [15]
- Match the Following
- What is pollination?
- State the Name of the Functional Unit Concerned with Sexual Reproduction.
- Name the Part Made up of the Stigma, Style and Ovary.
- Name the Swollen Lower Part of the Carpel.
- Name the Male Part of the Flower.
- Where Are the Pollen Grains Produced?
- Prepare a Slogan for Campaign Against Female Foeticide.
- Fill in the Blanks and Rewrite the Completed Statements: Lymph Flows in _______________ Direction.
- Mention pollination types.
- Draw a diagram of the longitudinal section of a flower and label the following parts.
- Give scientific reason. Flower is a structural unit of sexual reproduction in plants.
- Sketch and label the essential and accessory whorls of flower.
- Give any two examples of agents of pollination.
- Type of sexual reproduction is ______.
