respiring seeds

Question 1

how is the release of heat from respiring seeds measured

Answer 1

by placing seeds with moist cotton wool in a thermoflask. measure the temperature at the start of the practical and after a few days

Question 2

how is the control set up for investigating the release of heat

Answer 2

by setting up another thermoflask with boiled seeds and measure any temperature change

Question 3

why are boiled seeds used for the control

Answer 3

because boiled seeds cannot respire so it shows that any further change in the temperature using the live seeds are due to respiration

Question 4

what is the reagent that can be used to indicate carbon dioxide level

Answer 4

hydrogen carbonate indicator

Question 5

what is released during the respiration of the seeds

Answer 5

carbon dioxide

Question 6

what is the function of sodium hydroxide in the practical set up

Answer 6

to act as a carbon dioxide absorbent