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Science Form 1 KSSM Chapter 2 Notes

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RECALL

CELLULAR
RESPIRATION
AND
PHOTOSYNTHESIS
LEARNING STANDARD 2.2.4
Student should be able to explain how the
process of cellular respiration and the process
of photosynthesis complement each other.
Photosynthesis and cellular respiration are
complementary processes by which living things obtain
needed substances.
They both consume and create the same substances
(water, glucose, oxygen, and carbon dioxide) but in
different ways.
Through these processes, plants obtain the carbon
dioxide they need and living organisms obtain the
oxygen they need.
It is very interesting how photosynthesis and cellular
respiration help each other.
During photosynthesis, the plant needs carbon dioxide and
water-- both of which are released into the air during
respiration.
And during respiration, the plant needs oxygen and glucose,
which are both produced through photosynthesis!
So in a way, the products of photosynthesis support respiration,
and the products of respiration support photosynthesis, forming a
cycle.
The life cycle of photosynthesis and cellular respiration sustains
life on earth.
Both are required to exist in symbiosis.
Cellular respiration cannot occur without photosynthesis, and vice
versa.
Use the best
word to
complete the
diagram.
You may use the
website notes
and the textbook
as your reference.

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