Topic 4 A

Question 1

Word equation for photosynthesis

Answer 1

Light
Carbon dioxide + water ———
Glucose + oxygen

Question 2

5 ways plants use glucose

Answer 2

Respiration

Converted into cellulose to make cell walls stronger

Converted into proteins for growth and repair

Stored as Fats or oils

Stored as starch

Question 3

Limiting factors on rate of photosynthesis

Answer 3

At night = light intensity

In winter = temp

Warm and bright = co2 concentration

Mineral deficient soil = chlorophyll concentration

Question 4

For photosynthesis

The stronger the light intensity

Answer 4

The rate of photosynthesis increases up to a certain point

Question 5

For photosynthesis

Tye stronger the concentration of co2

Answer 5

The rate of photosynthesis will increase to a certain point

Question 6

For photosynthesis

The higher the temperature

Answer 6

The faster the rate of photosynthesis until a certain point

Question 7

For photosynthesis

What happens when the temp hits 45 degrees

Answer 7

Enzymes become denatured and the rate of photosynthesis drops

Question 8

On a rate of photosynthesis graph for co2 and light levels, the line will

Answer 8

Increase at a steady rate then level out

Question 9

On a rate of photosynthesis graph for temperature the line would

Answer 9

Increase at a steady rate then drop back down to bottom at 45 degrees

Question 10

How to create ideal conditions for photosynthesis

Answer 10

Greenhouse

Question 11

Is photosynthesis exo or endo

Answer 11

Endothermic as it requires energy in the form of sunlight to be trapped by the chlorophyll

Question 12

For photosynthesis
The higher the concentration of chlorophyll

Answer 12

The more light trapped so the more photosynthesis can happen

Question 13

Why do farmers have to create a balance

Answer 13

Lighting and heating in greenhouses increase yield however they are very expensive

Question 14

Light intensity =

Answer 14

Light intensity at source
÷ distance²