All about plants for primary school

1. ALL ABOUT PLANTS.

2. 1. What are plants?
Plants are living things. They
are made up of cells. They
need air, water, soil, and
sunlight to live. They cannot
move from place to place,
but their leaves move to
catch the sun and their
roots move to get water.
Their seeds can be carried
by animals or blown by the
wind.

3. 2.Part of the plants
• Roots. Take in water and
food from soil. The rots
anchor plants to the soil.
• Stem. transports water
through plant. The stem
raises the height of flowers
and leaves ant take then
closer to light. The stem is
made up of little tubes.

4. • Leaves. Almost always
green but sometimes
covered with another
colour such as red. Leaves
make food for the plant. To
do this they need the
water and mineral salts
obtained from the soil,
sunshine and CO2.
• Flowers . Flowers produce
seeds which form new
plants.

5. 3.How plants make food:
photosynthesis
Plants makes their own
food. Leaves are the most
important part of the plant
for this process.
Within the leaf is a green
material called chlorophyll.
Chlorophyll absorbs sunlight
to make a natural sugar that
the plants uses for food.
This process is called
photosynthesis.

6. During photosynthesis, plants use light energy from
the sun to convert carbon dioxide from the air and
water from the soil into sugar to feed the plant. During
this process oxygen is released into the air. Because of
that plants are very important since they clean the air.
The leaf has veins for
carrying the sugar to other
parts of the plant. In the
fall, leaves lose their
chlorophyll, so that they
change to different
colours. http://tpssharonh.blogspot.com.es/201
2/08/photosynthesis.html

7. 4. Plants classification
We are going to study two types of
plants, the one that has got flowers
and the one that hasn’t got flowers,
4.1 Flowering plants are a type of
vascular plant that produces
flowers in order to reproduce.
Flowering plants produce seeds
within a fruit. The scientific name
for flowering plants is
angiosperms.

8. 4.2 Non-flowering plants
Some plants do not use flowers
to reproduce. These plants are
called non-flowering plants.
There are two main groups of
non-flowering plants. Plants
that use spores to reproduce
and plants that use seeds to
reproduce. The non-flowering
plants that use seeds are called
gymnosperms.

9. 5. Flowering plants reproduction
Flowers are important for sexual reproduction
by plants. They produce male sex cells and
female sex cells. They attract the insects thanks
to their colours and smell. By means of
pollination both cells female and male meet
together.

10. 5.1 Part of the flowers

11. Sepals: Protect the unopened flower.
Petals: May be brightly coloured to attract insects
Stamens: The male parts of the flower (each
consists of an anther held up on a filament)
Anthers: Produce male sex cells (pollen grains)
Stigma: The top of the female part of the flower
which collects pollen grains
Style: Long tube que connect the stigma with the
ovary.
Ovary: Produces the female sex cells (contained in
the ovules)
The anther and the filament form the stamen
The stigma, the style and the ovary form the Pistil

12. 5.2 Plants Reproduction
Reproduction in flowering plants
begins with pollination. Pollination
is the transfer of pollen from anther
to stigma on the same flower or to
the stigma of another flower.
The pollination can be made for the
insects or for the wind.
When the pollen joins with the
female egg cell, fertilisation has
taken place. After this, the petals fell
and the seeds grow in the ovary.

13. No-flowering plants
doesn’t use flowers to
reproduce. There are two
main groups of non-
flowering plants. Plants
that use spores to
reproduce and plants that
use seeds to reproduce.
The non-flowering plants
that use seeds are called
gymnosperms.
http://easyscienceforkids.com/all-
about-germination/

14. 7.Why plants are so important?
Plants are very important for us because:
• They give us food from all different parts of
the plant: flowers, fruits, vegetables, seeds,
nuts, stems, and leaves.
• Some plants give us medicine.
• Trees are used to make paper and furniture.
• They clean the air as they take carbon dioxide
which is bad for us and expel oxygen which is
good for us.
• Plants provide habitat for animals and
humans.
• Plants protect the soil from erosion