photosynthesis Flashcards
what is photosynthesis?
a chemical reaction where plants make their own food
what is needed for photosynthesis?
carbon dioxide
sunlight
water
chlorophyll
what is produced during photosynthesis?
glucose
oxygen
what is the word equation for photosynthesis?
(6)carbon dioxide +(6) water –> glucose + (6)oxygen
what is starch ?
starch is the extra glucose that is stored
what is used to test the presence of starch?
iodine
why is glucose insoluble? (starch)
- does not affect the water concentration inside cell
- starch stays is storage areas and does not move around
what factors affect the rate of photosynthesis?
temperature
concentration of carbon dioxide
light intensity(amount of light reaching a light)
what is the optimum temperature
temperature at which the rate of photosynthesis is fastest
what is a limiting factor?
a factor that prevents the rate of photosynthesis from increasing at a particular time
what is the greenhouse effect?
creating a warm atmosphere to increase the rate of photosynthesis
how does the greenhouse effect help us?
plants grow faster
collect higher yields
you can grow things that are unsuitable for British weather.
how do we increase the rate of photosynthesis
use paraffin lamps which produces carbon dioxide
or artificial light helping photosynthesis continue beyond daylight hours
what type of plant tissue carries out photosynthesis?
palisade
mesophyll
