Unit 3 presentation Natural Science

1. natural

2. Plants make their own food and are living things.
Plants need water, minerals, air and sunlight.
Plants are born, grow, reproduce and die.
All plants have roots, stems and leaves.
What are plants like?

3. Are all leaves the same?
Round with a
smooth edge
Oval with a
smooth edge
Needle-shaped
with a smooth
edge
Heart-shaped with
a toothed edge

4. The sepals form the calyx.
The pistil has ovules inside.
Stamens have pollen at the top.
Petals form the
corolla.
What are the parts of a flower?

5. 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?

6. Photosynthesis = minerals + water + sunlight + carbon dioxide = food + oxygen
Roots absorb minerals
and water
Leaves absorb
sunlight and
carbon
dioxide
How do plants make food?

7. How do we classify plants?
Trees have a big, woody stem called a
trunk.
Grasses have flexible green stems.
Bushes have woody stems, but they
don’t have a trunk. They have branches
near the ground.

8. How do we classify plants?
Deciduous plants lose their
leaves in autumn.
Evergreen plants always have
leaves.

9. How do we use plants?
We get wood, rubber, cosmetics and food from plants.
We also get thread, paper, flour and medicines.

10. We should support national
parks and collect rubbish.
We shouldn’t step on flowers
or cut down trees.
How can we look after plants?

11. What have we learnt?
roots leaves
Plants have three parts…
stems

12. What have we learnt?
trees grass
Plants can be…
bushes

13. What have we learnt?
water carbon dioxide
Photosynthesis=
minerals sunlight
food and oxygen