photosynthesis

Question 1

what is photosynthesis

Answer 1

plants use carbon dixoide, water aand sunlight to make theri own food.

Question 2

how can you test if a leaf is photosynthesising

Answer 2

boil the leaf to soften it, warm in ethabnol to remove chlorophyll, dip in warm water again, place on a awhite tile and add iodine solutiuion, should turn orange to blue/black

Question 3

why are plants so important in the aatmoshphere

Answer 3

they increase oxygen levels and decrease carbon dioxide levels

Question 4

what experminet on elodea canb test rate of hptosynthesis

Answer 4

choose a factor, light source, light intensity or termperecture, then count number of bubblers prouced in a set time or use a gas syrynge to measure volume of gas

Question 5

name 4 ways leaves are adapted for photosynthesis

Answer 5

wide, greento absorb light, flat, thin outer layer to allow lioght tpo pass throiugh

Question 6

what is the role of the xylem

Answer 6

draw water from roots to plant

Question 7

what is the role of the phloem

Answer 7

transport glucose to growing parts of plants for respiration

Question 8

what is the role of the stomata

Answer 8

tiny holes that allow for gas exchange

Question 9

how is a root hair cewll adapgted for its function

Answer 9

larger surface area to ibncrease rate of water absorptionand minerals