The importance of photosynthesis in the ecosystem

1. THE IMPORTANCE OF
PHOTOSYNTHESIS TO THE
ECOSYSTEM
Group Members:
1) Acetor Ho Xue Er
2) Lim Chee Wei
3) Chiang Jing Shen
4) Chin Hong Wei
Science Project
Band 6

2. Index…
 Slide 3 – What is Photosynthesis?
 Slide 4 – What is Ecosystem?
 Slide 5 – Why is Photosynthesis Important
to The Ecosystem?
 Slide 6 – It Sustains Life…
 Slide 7 – It Removes Carbon Dioxide…
 Slide 8 – It Helps in Industrial Activities…
 Slide 9 -

3. What is Photosynthesis?
 Photosynthesis is a
process used by plants
and other organisms to
convert light energy,
normally from the Sun,
into chemical energy
that can be
later released to fuel the
organisms' activities.
 Photosynthesis maintains
atmospheric oxygen
levels and supplies all of
the organic compounds
and most of the energy
necessary for life on
Earth.

4. What is Ecosystem?
 An ecosystem is
a community of living
organisms (plants, animals and
microbes) in conjunction with
the non-living components of
their environment (things like
air, water and mineral soil),
interacting as a system.
 As ecosystems are defined by
the network of interactions
among organisms, and
between organisms and their
environment, they can be of
any size but usually encompass
specific, limited
spaces (although some
scientists say that the entire
planet is an ecosystem).

5. Why is Photosynthesis
Important to The Ecosystem?
 It provides food.
 It removes carbon dioxide.
 It helps in industrial activities.

6. It Provides Food…
 Plants and algae rely on photosynthesis to create and store energy
become food for many other organisms, transferring that energy to
organisms at all levels of the food chain. When herbivores
eat plants, they absorb the energy stored by plants through
photosynthesis. When carnivores consume herbivores, they also
consume the stored energy originally captured by plants and later
by the herbivores. Decomposers feed off of tissue from dead
carnivores, also absorbing the energy that passed through the food
chain from the plants, herbivores and carnivores.
 The absence of plants, resulting from non-existence of the process
of photosynthesis, will start a chain of reactions that will end all
animal life in the ecosystem. Animals are not able to produce the
food they need for sustaining life. Animals cannot produce from
simple chemicals, complex compounds required by them to create
and sustain their life. They can only produce complex compounds
required by them from other complex compounds produced by
plants. In this way, animals get their food either from plants, or from
the animals who live off plants. Thus without plants there will be no
animals subsisting directly on food from plants. And in absence of
such animals there will be no animals subsisting on food obtained
from other animals. Thus without photosynthesis there will be no
plant or animal life on earth.

7. It Removes Carbon Dioxide…
 Photosynthesis converts carbon dioxide into
oxygen. During photosynthesis, carbon
dioxide leaves the atmosphere and enters the
plant and leaves as oxygen. In today's world,
where carbon dioxide levels are increasing at
unprecedented rates, any process that
removes excess carbon dioxide from the
atmosphere is ecologically and
environmentally important in nature. In fact,
microalgae are being examined as a
potential source of carbon dioxide removal in
industries that release high amounts.

8. It Helps in Industrial Activities…
 If there is no photosynthesis in the
ecosystem, there will be no plants and loss
of plant life on Earth through activities like
logging or land development pose a
threat to the primary production of the
Earth.

9. THE END…
Hope you don’t find it boring or whatever…

10. Questions?
 Please… Make sure your questions are
about the importance of photosynthesis,
the ecosystem or the importance of
photosynthesis to the ecosystem.
 Or else, question not answered… ;)