Plants need air to grow and survive. In an experiment, two bottles were filled with soil and planted with lentil seeds. One bottle was sealed shut, preventing air from entering, while the other bottle was left open. After a few days, the plant with access to air grew normally, while the plant without air did not grow at all. The presence of air is necessary for plant growth.

1. AIR
AND
PLANTS.
Student: ELLIE JUSTINE TORRES G.
School: Reuven Feuerstein

2. To make this experiment we used two little
bottles of plastic and we broke them into a
half with a scalpel.
September 22nd, 2013

3. We put soil into the bottles and planted
some lentil seeds.

4. Then, we put one of the top of the bottles
on its other part and we joined it with some
tape.
The bottle must be covered
carefully so no air can get in it.

5. Few days later, we noticed that plant
which had air was growing, while the one
that was covered with its top part wasn´t
growing.

6. The days passed and the plant which had
no air wasn´t still growing.

7. CONCLUSIONS
With this interesting experiment I could see
and understand that plants as animals and
people need air to live and grow up.

8. LIGHT AND
GERMINATION
How
do
presence
absence of
affect
the
seeds?
the
or
light
pea

9. On September the 22nd the seeds were
planted.

10. On September 28th, we noticed that the
pea plant that recieved light showed a
growth on its root, while the one that didn´t
recieve light showed no growth.
With light
Without light

11. On October 2nd, we noticed that the plant
with presence of light continue to show a
bigger growth on its root, while the one with
absence of light showed a poor growth on
its root.
With light
Without light

12. On October 6th we saw that the root of the pea
seed with no light had grown 4 cms and its stem
was just about sprouting , and the root of the pea
seed with light hadn´t grown as much as the one
of the pea seed without light, and its stem had
grown more than the plant without light.
With light
Without light

13. On October 10th we saw that the root and
stem of the pea seed without light had grown
faster than the one with light whose growth
was
poor
and
slower.
Without light
With light

14. On October 12th we saw that the stem and
the root of the pea seed without light grew
faster but weaker and the pea seed with light
grew slower and its root didn´t grow too
much.
Without light
With light

15. CONCLUSIONS



The pea seed in the absence
of light grew faster and bigger.
The plant with the presence of
light grew less and slower, but
its stem is stronger and it looks
very green.
The pea seed with light
showed
a
normal
photosynthesis growth process
showing a green and stronger
stem and root, while the pea
seed without light grew faster
but its stem looks yellow and
with light colors.