photosynthesis Flashcards
What is the word equation for photosynthesis?
water+carbon dioxide –> oxygen+glucose
What is the epidermis for?
is transparent to allow more light to reach the palisade cells
What are palisade cells for?
contain many chloroplasts for absorbing light
What is spongy mesophyll for?
have air spaces to allow for gas exchange
What is the importance of plants?
Make start of all food chains
Take in carbon dioxide which reduces global warming
act as a shelter/habitat
help prevent soil erosion
What are xylem for?
they move water and minerals from roots up a plant stem and into the leaves
What are phloem for?
moves glucose around the plant
what different minerals are used in plants
potassium - healthy
nitrates - making proteins for stem/leaf
phosphorus - root growth
what are needed for photosynthesis?
sunlight
water from soil
carbon dioxide from air
chlorophyll
what is the function of the roots
roots absorb mineral and water from the soil
they also anchor a plant which keeps them from falling and helps the plant grow taller
describe the test for starch
use iodine solution which turns black
what is stomata for
it lets carbon dioxide enter
what are the three main uses of glucose
respiration to release energy
stored as starch
used to make proteins for growth
how are plants adapted for photosynthesis
the leaves are large and flat to maximise surface area
what is transpiration
loss of water by evapouration
