grade 3 science lesson by Mrs. Aisha

1. How do plants use
flowers or cones
to reproduce?

3. reproduction
make seeds that grow into new plants.
Plants can reproduce:
grow stems and roots that grow into
new plants.

4. When plants reproduce, they make more
of the same kind.
Maple trees produce seeds. These seeds can
grow into new maple trees.

5. 1-Each seed carries information from
the parent plants.
2-The seed uses this information and
food stored from the parent plant in
the seed to grow into a new plant.
3-The new plant will be like its
parents.

6. 4- After seeds are produced , they
may scatter or move away from the
parent plant. This gives the new plant
more room to grow.

7. Parts of a flower
petal
This part Makes pollen
Pollen helps form seeds

10. Pollination happens when animals or
wind move pollen to the part of the
flower that makes seeds.
Animals or wind can pollinate, or
carry pollen to another flower.

11. After pollination, seeds form
near the center of the flower.
Another part, fruit, often grows
around the seed to protect it.

12. How seeds grow
seeds need air, water, and the
right temperature to germinate,
or begin to grow.

14. 1- As the seedling (young plant) grows, it grows out of the
soil.
2- Leaves grow from the stem.
3- The leaves use sunlight to make sugar for food.
5- The seedling can grow into an adult plant that
has flowers.
6- The flowers are pollinated and new seeds form.
7- If these new seeds germinate, they can grow
into new plants.

16. Seed coat Seed leaf
developing
plant leaf embryo

17. How cones help plants
Small pollen cones

18. Large seed cones

19. 1- wind blows pollen from small pollen cones to
large seed cones.
2- pollen sticks to the large seed cones.
3- seeds begin to grow under scales of the seed
cones.
4- seeds become fully developed and float to the ground.
5- each seed can grow into a new plant.

20. …………………..cone ……………………..cone