respiration and photosynthesis

Question 1

what is photosynthesis

Answer 1

photosynthesis is the process that produces glucose

Question 2

test for starch in a leaf

Answer 2

1. put the leaf in boiling water stops chem rxns
2. put the leaf in ethanol get rid of chlorophyll
3. rinse the leaf in cold water and add iodine

Question 3

chlorophyll test

Answer 3

take a variegated leaf some green parts
test the leaf for starch
suggests that only part of the leaf has chlorophyll as the rest is boiled off

Question 4

test showing whether photosyn has taken place

Answer 4

leave plant in a place without light for 48 hours
then cut a leaf and test for starch
it wont turn blue black as it has used up its starch in repsiration

Question 5

minerals needed

Answer 5

nitrates: contain nitrogen for making amino acids and proteins
phosphates: contain phosphorous for dna and cell membranes
potassium: regulates plant growth and health

Question 6

xylem

Answer 6

xylem is carries water and mineral salts from the roots to the leaves in transpiration steam, made of dead cells.

Question 7

phloem

Answer 7

transports amino acids and sucrose sugars

Question 8

breathing

Answer 8

this is the process of moving air in and out of the lungs

Question 9

CO2 indicator test

Answer 9

yellow if there are high levels of C)2 as lots has been produced.
purple if there are low levels

Question 10

anaerobic chemical equation in plants products

Answer 10

2 C2H5OH + 2 CO2

Question 11

how are leaves adapted

Answer 11

stomata begin to close as it gets dark, don’t need to be open to let CO2 in, water can’t escape. Guard cells increase in volum to open stomata and to close decrease in volume.