photosynthesis
- Created by: amandacygal
- Created on: 23-01-15 21:12
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- photosynthesis
- structure of a plant
- mesophyll tissue
- most of photosynthesis occurs
- xylem
- transports water through a plant in the process transpiration
- consists of dead cells thick, strengthened cellulose cell wall with a hollow lumen
- phloem
- transports sucrose and foods through a plant in translocation from stems to growing and storage tissues
- consists of living cells
- transports sucrose and foods through a plant in translocation from stems to growing and storage tissues
- transports water through a plant in the process transpiration
- epidermal tissue
- covers the whole of the plant
- mesophyll tissue
- photosynthesis eqution
- 6CO2 + 6H20-> C6H1206 + 602 + ENERGY
- By Amanda Cygal
- 6CO2 + 6H20-> C6H1206 + 602 + ENERGY
- Limiting factors: carbon dioxide, temperature and light.
- carbon dioxide:if its warm enough and light enough the limiting factor will be CO2
- carbon dioxide is a RAW MATERIAL needed for photosynthesis
- CO2 will only increase the rate of photosynthesis to a certain point just like light
- you can control CO2 by adding hydrongencarbonate to water as it gives off CO2 if it is being used in an experiment make sure you change it each time
- light: provides energy for photosynthesis
- increasing light will steadily increase the rate of photosynthesis to a certain point
- temperature: if the temperature is the limiting factor it is usually due to it being too low as enzymes work slower at colder temperatures
- however if its too hot the enzymes needed for photosynthesis will be denatured due the shape being broke.
- carbon dioxide:if its warm enough and light enough the limiting factor will be CO2
- greenhouses: traps heat from the sun to make sure temperature doesn't become limited
- in summer farmers may use shades and ventilation so it doesn't get too hot
- in winter heaters may be used keep and ideal temp
- when the sun goes down artificial light will be supplied as light is always needed
- carbon dioxide is also used through paraffin heaters which give off CO2 as a byproduct
- enclosing plants in a greenhouse defends them from pests and diseases
- fertilisers can also be added to soil to provide all minerals for healthy growth
- all this costs money but if the farmer gets the right conditions his crops will grow healthier and faster so they can be sold in order to make profit
- in summer farmers may use shades and ventilation so it doesn't get too hot
- structure of a plant
- covers the whole of the plant
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