Living Environment Translated Arabic 2014 | Page 78

17. Obtaining Energy
 All life requires a constant supply of energy.
 An autotroph is an organism that can make its own food.
o Autotrophs are also celled producers.
o Most producers make food by photosynthesis using
light energy.
o During photosynthesis :
 Plants take in carbon dioxide (CO2) and water
 The chloroplasts in plant cells contain
chlorophyll which captures light energy used
during photosynthesis.
 Plants release oxygen (O2), glucose ( C6H12O6)
and water as products of photos