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Photosynthesis VS Respiration - Coggle Diagram
Photosynthesis VS Respiration
Side note: Breathing
Breathing: exchange of O2 and Co2 between org and env, takes place in specialised organs like lungs. Is not respiration.
Breathing in animals: Frogs --> lungs and skin. Some insects --> rows of small holes along their bodies. Fish --> gills to take in dissolved oxygen from water.
Breathing in plants: gaseous exchange takes place through small pores on upper and lower surfaces of the leaves called stomata
Photosynthesis
Takes place only in plants
Takes place in light
Requires energy (light)
Uses co2 and h2o
Makes carbohydrate molecules
O2 is given off
Occurs only in cells with chlorophyll
Carbon dioxide + water --> (light energy from sun, trapped by chlorophyll) --> glucose +oxygen
Respiration
Takes place in all org
Takes place all the time, fay and night
Releases energy
Uses oxygen
Breaks down carbohydrate molecules
CO2 and H2o given off
Occurs in all cells
glucose + oxygen --> (respiration) --> carbon dioxide + water + energy
Res and Phot are important for 3 reaons
Plants make food which animals need
Plants produce oxygen animals need for breathing and respiration
The carbon dioxide produced by animals during respiration is used by plants for photosynthesis
Comparing phot and res in greater detail
During the day when phot occurs, plants produce more oxygen then they need for respiration. The extra oxygen diffuses out of their stomata. The amount of Co2 produced from respiration is not enough for phot, so co2 from the air diffuses into the leaves
Green plants carry out phot only during the day when there is light. Res takes place in all organisms and takes place all the time, both day and night