Photosynthesis is the foundation of majority of ecosystems and food chains on earth .
What is photosynthesis ?
Photosynthesis is a process by which green plants , algae and certain bacteria turn sunlight ,carbon dioxide and water into food (sugar) and oxygen.
In this process light energy converted into chemical energy ,which is later used to fuel cellular activities .
Equation of photosynthesis :
6CO2 + 6H2O —> C6H12O6 + 6O2
Photosynthesis depends upon the factors like light intensity, the concentration of carbon dioxide ,temperature, water, and pollution .
photosynthesis takes place in the cell organelles called chloroplasts . these organelles contains a green coloured pigment called chlorophyll, which is responsible for the characteristic green colouration of the leaves.
What is ecosystem ?
An ecosystem is defined as a community of lifeforms in concurrence with components , interacting with each other .
It is the functional and structural unit of ecology where living organisms interact with each other and the surrounding environment .it is a chain or interaction between organisms and their environment.
Ecosystem term was first coined by A.G Tansley in 1935.
The structure of an ecosystem is characterised by the organisation of both biotic and abiotic components .
What is food chain?
A food chain refers to the order of events in an ecosystem ,where one living organism eats another organisms and later that organism is consumed by another larger organisms .the flow of nutrients and energy from one organism to another takes place at different trophic levels .ecosystem also explains the feeding pattern between living organisms.
Every levels of food chain is known as trophic level .
Food chain has 4 major parts like sun ,producers ,consumers,and decomposers.
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