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Plants unit 3
1.
2. BASIC PLANTS FACTS.
. Plants are living things.
. They are born, grow, reproduce and die.
. They need water, air and sunlight .
. They make their own food.
. They use water, air, sunlight and minerals from
the soil to make their food.
. They can´t move around but they can move one or more of their parts.
. Many plants make seeds.
3. PARTS OF A PLANT
. All plants have roots, stems and leaves. These have different
functions.
. Roots , stems and leaves can be different shapes and sizes.
4. ROOTS
. Roots absorb minerals and water from the soil.
. They fix the plant in the ground.
. The roots of a plant grow in the ground.
. They can be thick or hairy.
Carrots and dandelions have a thick root. Onions and peas have hairy roots.
5. THE STEM
. The stem supports the plant.
. The food passes through the stem.
. The stem grows above the ground. Branches
grow off the stem.
. The stem can be green or woody.
Wheat and poppies Oak trees and bamboo
have a green stem. have a woody stem.
6. LEAVES
.Leaves make the food (photosinthesis).
.They are attached to the branches or the stem.
.They have different shapes and edges.
Round with a
smooth edge.
Oval with a
smooth edge.
Needle-shaped
with a smooth
edge.
Heart-shaped with
a toothed edge.
7. READ THE CLUES AND SAY THE PART OF THE PLANT.
1. They make the food. They are the…….
2. They absorb minerals and water from the soil. They are the ...
3. It supports the plant. It is the …………………
4. They fix the plant in the ground. They are the ………….
5. The food passes through it. It is the ………………..
8. WHAT KIND OF LEAVES ARE THEY?
Round with a smooth edge. Oval with a smooth edge.
Needle-shaped with a smooth edge. Heart-shaped with a toothed
edge.
9. PLANT REPRODUCTION
. Some plants have flowers.
. Their reproductive organs are inside the flower.
. Flowers can look different but all flowers have the same parts.
STAMENS
CALYX
COROLLA
PISTIL
10. The calyx is made of sepals.
Sepals are green. They
protect the flower.
The corolla is made of petals.
Petals are different colours to
attract insects.
The pistil is the female
reproductive organ. It has
ovules inside.
The stamens are the male
reproductive organs. They have
pollen at the top.
11. First, an insect takes pollen from the stamen
to the pistil.
The pollen joins an ovule inside the pistil.
They make a seed.
The petals fall off and the pistil grows into a fruit.
The fruit falls on the ground and its seed grows into a
new plant.
HOW DO PLANTS REPRODUCE?
12. Photosynthesis = minerals + water + sunlight + carbon dioxide = food + oxygen
The leaf absorbs
sunlight and carbon
dioxide from the air. When plants make
food they make
oxygen too and
return it to the air .
That’s good
because animals
need oxygen to
breathe!
How do plants make food?
Roots absorb water and minerals from the soil.
Water and minerals pass through the stem to the
leaves.
13. TYPES OF PLANTS
We can classify plants by their stem or by their leaves.
14. TREES
. Trees have a big, woody stem called a trunk.
. The branches on a tree grow high above the ground.
. Trees grow slowly.
. They are the tallest plants and live the longest.
15. BUSHES
. Bushes have a woody stem but it is not a trunk.
. The branches on a bush grow near the ground.
. Bushes are shorter than trees.
16. . Grass has a flexible, green stem.
. Grass is usually short.
. Grass grows quickly.
GRASS
17. READ THE CLUES AND SAY: TREE, BUSH OR GRASS.
1. It has a green, flexible stem. It is …………….
2. It has a big, woody stem. It is a …………
3. It has woody stems, but not a trunk.It is a……………….
4. It grows very slowly. It is …………………..
5. The branches grow near the ground. It is a …………..
6. It´s a small plant. It is ……………………
7. It can grow very tall. It is a…………………………
grass.
tree.
bush.
trees.
bush.
grass.
tree.
18. We can also classify plants by their leaves.
. Evergreen plants always have leaves because they make leaves all
year.
. Deciduous plants lose their leaves in autumn. New leaves grow in
spring.
A pine tree is an evergreen tree. A rose bush is a deciduous plant.
21. DECIDUOUS OR EVERGREEN?
1. An olive tree always has leaves. It is ………………………..
2. A holly bush has leaves all year round. It is ……………….
3. A cherry tree loses its leaves in autumn. It is …………..
4. A willow tree grows new leaves in the spring. It is ……………….
5. A chesnut tree has no leaves in winter. It is ……………….
22. PLANTS AND US
How do we use plants?
1. We get thread from cotton flowers to make new clothes.
23. 2. We use wood from tree trunks to make furniture.
25. 5. We use fruit and vegetables as food.
We eat fruits, roots, stems, leaves and flowers.
26. What part of the plant do we eat?
ROOTS STEM LEAVES FLOWER SEEDS FRUIT
ONIONS ASPARAGUS SPINACH CAULIFLOWER PEAS TOMATOES
CARROTS CELERY LETTUCE BROCCOLI PEANUTS PEPPERS
RADISHES APPLES
TURNIPS LEMONS
27. 4. We make flour from wheat.
Then, we use flour to make bread, pasta and biscuits.
28. 6. We get rubber from some trees to make tyres.
29. 7.We use some plants to make perfume, soap and cosmetics.
