This document discusses the parts, needs, and functions of plants. It describes the roles of roots, stems, leaves, flowers, and seeds. The key parts of flowers are sepals, petals, stamens, pistils, ovaries, and pollen. Pollination is the transfer of pollen from the stamen to the pistil and can occur through insects, birds, or wind. After pollination, a pollen tube grows from the pollen grain to the egg, allowing fertilization to take place.

1. How do plants grow, develop
and reproduce?
Chapter 2: Lesson 2:

2. Parts of the plant
Flower
Stem
Leaves
Roots

3. Needs of plants
Water Sunlight Nutrients
Carbon
dioxide

4. Functions of Parts of the plant
1) Anchors the plant in the
soil.
2)The roots takes water and
The stem takes water and
nutrients from the roots.
The Leaf takes water and nutrients
(from stem) and sunlight and carbon
dioxide (from the air) to make the
plants food.
The flower forms seeds and
fruits.
(production of new plants)

5. Parts of a flower

6. Sepal
Petal
Receptacle
Anther
Filament
Stamen
Stigma
Style
Ovary
Pistil
Ovule
Egg

7. Sepal
Protects the bud.

8. Petal
Brightly coloured
to attract insects.
Anther
Filament
Stamen
The male
part of the
flower. (The
anther
produces
pollen)
Stigma
(Sticky surface to
catch the pollen)
Style
(Tube)
Ovary
(Tube)
Pistil
(The female
part of the
flower)

9. Pollinatio
n
(The transfer of
pollen from stamen
to pistil)

10. Ways of Pollination
By
insects or
birds
By wind

11. Pollination by insects or
birds
Nectar (sweet liquid), colourful petals and scent attract
the insect and birds
Pollen sticks to their body.
When pollinator goes to another flower the pollen
sticks to the pistil.

12. Types of
Pollination
Self
pollination
Cross
pollination
The male pollinates
the female of the
same flower.
The male pollinates
the female of
another flower.

13. What happens after Pollination?
A pollen tube grows from the pollen to the egg.
The pollen enters the egg (FERTILISATION)

14. What happens after fertilisation?
A pollen tube grows from the pollen to the egg.
The pollen enters the egg (FERTILISATION)

15. Structure of seed
Baby plant
Protects the
seed
Stores food
for embryo.