Section ll

D. Short answer questions.

1. What are the two reproductive parts of a flower?

Answer.  Two Reproductive Parts of a Flower:
The flower has two reproductive parts: the stamen (male part with pollen) and the pistil (female part with ovary). The stamen fertilizes the pistil to produce seeds.

2. What is the importance of the corolla present in a flower?

Answer. Importance of Corolla:

The corolla is made of bright petals that attract pollinators like bees. It also protects the inner reproductive parts of the flower.

Q3. Mention the various parts of the androecium.

Answer. Parts of Androecium:
The androecium (male part) consists of:

• Anther: Produces pollen.
• Filament: Supports the anther.

Q4. What is a bisexual flower?

Answer. Bisexual Flower:

A bisexual flower has both male (stamen) and female (pistil) parts. Examples: Rose, Hibiscus.

Q5. Define unisexual flowers with examples.

Answer. Unisexual Flowers:
Unisexual flowers have only male OR female parts. Examples:

• Male: Cucumber flower (stamen only).
• Female: Papaya flower (pistil only).

E. Long Answer Questions

1. Parts of a Flower:
A flower has four main parts:

• Sepals: Green, leaf-like structures that protect the bud.
• Petals: Colorful and fragrant to attract pollinators.
• Stamen (Male): Includes the anther (makes pollen) and filament (supports anther).
• Pistil (Female): Consists of stigma traps pollen), style (pollen tube), and ovary (holds seeds). The receptacle connects all parts to the stem.

2. Pollination & Its Types:
Pollination is the transfer of pollen from the anther to the stigma. There are two types:

• Self-pollination: Pollen moves within the same flower e.g., Pea plants.
• Cross-pollination: Pollen travels to another flower via wind, water, or animals e.g., Apples by bees. This ensures genetic diversity in plants.