UNIT 2 PLANTS
Cristina Otero
Created on April 26, 2020
Presentation UNIT 2 PLANTS
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Transcript
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