UNIT 2 PLANTS

UNIT 2PLANTS

In this unit you will learn about...

• the parts of a plant.
• plant reproduction
• plant nutrition.
• different types of a plant.
• how we use plants

1. Parts of a plant2. Plant reproduction3. Plant nutrition4. Types of plants5. Plants and how to use them

Index

Parts of a plant

Plants are living things. They are born, grow, reproduce and die. They need water, minerals, air and sunlight. They make their own food. They can't move around.

RootsThe roots absorb water and minerals from he soil

RootsThe roots fix the plant in the soil

ROOTS

Parts of a plant

StemThe stem connects the roots and the leaves. Water and minerals, as well as nutrients pass through the stem.

StemThe stem holds up the plant

STEM

Parts of a plant

LEAVES

LeavesThe leaves make the food for the plant with water, minerals and sunlight.

Parts of a plant

Roots

Leaves

Stem

Plants have roots, stems and leaves.

Parts of a plant

Roots, stems and leaves can be different sizes and shapes

Onion plants have a hairy root.

Carrots plants have a thick root.

ROOTS

The roots of a plant grow in the ground.

Wheat has a green stem.

An oak tree has woody stem. .

STEMS

The stem grows above the ground. Branches grow off the stem.

Leaves are attached to the branches or the stem. They have different shapes and edges. .

Heartt-shaped with a toothed edge.

Needle-shaped with a smooth edge

Oval with a smooth edge.

Round with a smooth edge.

LEAVES

Let's sing!!!!!!

Parts of a plant

Plant reproduction

All plants do the life process of reproduction. Flowering plants reproduce by making seeds inside their flowers. Flowers look different but they all have male and female reproductive organs inside.

Calix

Pistil

Corolla

Stamens

Plant reproduction

Stamens

The staments are the male reproductive organs. The have pollen on the top.

Plant reproduction

Corolla

The corolla is made of petals. Petals are different colours to attract insects.

Plant reproduction

Calix

The calyx is made of sepals. Sepals are green. They protect the flower.

Plant reproduction

Calix

The calyx is made of sepals. Sepals are green. They protect the flower.

Plant reproduction

Pistil

The pistil is the female reproductive organ. It has ovules inside.

Plant reproduction

Plant nutrition

photosynthesis

Oxigene

Sunlight

Food

Carbon dioxide

Water

Minerals

Plants make food through a process called photosynthesis.

When plants make their own food they make oxygen too and return it to the air. That's good because animals need oxygen to breath

The leaf absorbs sunglight

Water and minerals pass through the stem to the leaves

Roots absorb w ater and minerals from the soil

Plant nutrition

Types of plants

Deciduous plants lose their leaves in autumn. New leaves grow in spring

Evergreen plants always have leaves because they make leaves all year.

Plants can be classified by their leaves into two groups: evergreen and decidious

Types of plants

If a plant have flexible, green stem, it is a grass. Grasses grow quickly.

If a plant has a woody stem but not a trunk, it is a bush. The branches of a bush grow near the ground. Bushes are shorter than trees.

If a plant has one big woody stem, called a trunk, it is a tree. The branches on a tree grow high above the ground. Trees grow slowly. They are the tallest plants and live longer

Plants can be classified by their stem into three types: tree, bushes and grasses

Types of plants

Plants and how to use them

We use wood from the trunks to make furniture, paper and card..

We get thread from cotton flowers to make clothes

Plants are essential in our lives. We use the plants in many different ways: for food, for medicine and cosmetics, and for making different materials.

Plants and how to use them

We se some plants to make perfume, soap, cosmetics and medicines.

We get rubber from some trees to make tyres

Plants and how to use them