Only green plants can make food through the process of photosynthesis.
Photosynthesis the process whereby plants make food using water and carbon dioxide in the presence of sunlight in order to produce sugar and oxygen.
Chlorophyll in the plants interacts with sunlight to split the water present into hydrogen and oxygen.
Air is exchange through the stomata which are found mostly on the underside of the leaves.
During photosynthesis, light energy is converted into chemical energy.
Food can be stored in different plant parts:
v Roots – carrots, sweet potato
v Stems – sugarcane, potato
v Leaves – cabbage, onion
v Fruits
v Seeds – groundnuts, maize, rice
A food chain shows how energy is transferred from one type of organism to another.
As energy moves up the food chain, it gets lesser because it has been transformed into other forms of energy.
Green plants and certain types of bacterial and algae are primary producer because they produce usable energy for other living organisms.
Predators and scavengers are known as secondary consumers.
Decomposers are organisms that feed on dead plants or animals and break them down into simpler substances.
Eg. Bacteria and fungi.
Maggots, dung beetles, ants and earthworms are the helpers.
Respiration takes place in all living things – it is the process where energy is released from glucose to carry out life processes.
Breathing is the mechanical procedure in which air reaches the lungs.
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