Photosynthesis

Question 1

Word Equation for Photosynthesis

Answer 1

Water+Carbon Dioxide(in the presence of sunlight and chlorophyll)—-> Oxygen + Glucose

Question 2

How do you Destarch a Plant

Answer 2

Place it in a dark cupboard for 48 hours

Question 3

Chemical Used for starch test

Answer 3

Iodine Solution

Question 4

What type of Reaction is Photosynthesis

Answer 4

Endothermic

Question 5

What Color will Hydrogen Carbonate Indicator turn if there is more CO2 and Why?

Answer 5

Yellow
Rate of Respiration>Rate of Photosynthesis

Question 6

What Color will Hydrogen Carbonate Indicator turn if there is less CO2 and Why?

Answer 6

Purple
Rate of Respiration<Rate of Photosynthesis

Question 7

What does it mean if Hydrogen Carbonate Indicator turns Red

Answer 7

Rate of Respiration=Rate of Photosynthesis

Question 8

What is a Limiting Factor?

Answer 8

An environmental factor(CO2,O2 or light) which prevents photosynthesis taking place at it maximum rate

Question 9

How is Leaf Adapted for Gas Exchange?

Answer 9

1)Stomata=Allows gases to enter and leave the leaf
2)Air Space= allows gases such as CO2 and O2 to diffuse

Question 10

How is Leaf Adapted for Light Absorption?

Answer 10

1) The cuticle is transparent which allows light to pass through
2)Palisade Mesophyll Has chlorophyll which absorbs/traps sunlight

Question 11

What Chemical Absorbs Carbon Dioxide from the Air?

Answer 11

Sodium Hydroxide

Question 12

What is it called when the Rate of Respiration=Rate of Photosynthesis

Answer 12

Compensation point

Question 13

How can you use pondweed to prove that oxygen is given off in photosynthesis?

Answer 13

Place pondweed underwater and count the number of bubbles produced in a given time

Question 14

Name two uses of glucose/ sugar made during photosynthesis

Answer 14

1) Used for respiration to produce energy
2) stored as starch

Question 15

Explain why in the summer the vents in the roof of glasshouse should be open

Answer 15

to reduce heat loss/ prevent overheating