1.1 What are the characteristics of plants?
Plants are living things.
Plants need water, air, sunlight and minerals.
Plants make their own food.
Plants form seeds to reproduce.
Plants cannot move by themselves, but they are affected by their environment
Main parts of a plant:
The roots: anchor the plant and keep it in the ground.
The stem: connects the roots with the leaves.
The leaves: make food for the plant and give off oxygen
The flowers: contain the reproductive organs of a plant
Click on the picture below for a fun experiment to try at home!
1.2 What do roots, stems and leaves look like?
Green stems are soft and flexible.
Leaves can be diferent shapes: round, oval, needle-shaped, or heart-shaped.
Round
Oval
Needle
Heart
Leaves can also have a smooth edge or a toothed edge.
Smooth Edge Toothed Edge
4.3 How do seeds and fruit form from a flower?
Some plants have flowers. The flowers contain the male and female reproductive organs. The seeds form inside the flower. The fruit forms around the seeds.
Step by Step:
1. The pollen grain falls from the stamen down the stigma and into the ovule.
2. The ovule and the pollen grain join together to make a seed.
3. The seed grows inside the ovary and turns into a fruit.
Here you can watch an episode of The Magic School Bus that explains things in a fun way :)
4.4 How can we classify plants?
There are many different types of plants. According to its type of stem, a plant can be:
1. A tree. A tree has a woody stem called a trunk and branches that grow out of the trunk to support the leaves, flowers and fruits.
2. Bushes are plants with woody stems but without a trunk. The branches grow near the ground.
3. Grasses, (like wheat) are small plants. Their stems are green, soft and flexible.
4.5 What are plants used for?
Plants have lots of uses: food, to make clothing, wood from trees to make buildings, furniture, paper, medicines, perfume, soap, etc. The list goes on and on!
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