photosynthesis

Question 1

plants are _ organisms

Answer 1

autotrophic

Question 2

what is the photosynthesis equation ?

Answer 2

sunlight
and chlorophyll
CO2+H2O=glucose +O2

Question 3

Where does photosynthesis happen in the plant ?

Answer 3

In the chloroplasts

Question 4

What is photosynthesis ?

Answer 4

The process by which plants synthesize carbohydrates from raw materials using energy from light

Question 5

What two main things are used in respiration ?

Answer 5

glucose and oxygen

Question 6

What are the products of respiration ?

Answer 6

carbon dioxide and water

Question 7

If there is more photosynthesis , there will be excess _, which will diffuse out the leaf. If there is more respiration , there will be excess _ and will diffuse out of the leaf

Answer 7

1. oxygen
   2.carbon dioxide

Question 8

Glucose is converted into _ or _ , so that it can be transported to other areas of the plant .

Answer 8

Sucrose or starch

Question 9

Name 4 things glucose is converted into

Answer 9

1. cellulose
   2.lipids
   3.proteins
   4.Dna

Question 10

give the chemical equation for photosynthesis.

Answer 10

6CO2 +6H20 =C6H12O6(glucose) + 6O2

Question 11

name four limiting factors of photosynthesis and explain why they limit photosynthesis

Answer 11

1.chlorophyll - chlorophyll captures light energy and without chlorophyll there is no photosynthesis
2.light -light energy is required for the creation of the chemical energy that is stored in glucose
3.temperature
4.Carbon Dioxide - the rate of photosynthesis depends on the concentration of carbon dioxide in the environment

Question 12

What can we use to measure the level of carbon dioxide in a plant environment?

Answer 12

hydrogen carbonate indicator solution

Question 13

what colour will the hydrogen carbonate indicator solution be , if there is a very high level of CO2

Answer 13

Bright yellow

Question 16

what colour will the hydrogen carbonate indicator be , if there is very low levels of CO2

Answer 16

Pink or purple

Question 16

name 7 ways that glucose is used in a plant.

Answer 16

1. releasing useful energy - the energy is released from glucose through respiration
2. storing , to use later - they store is by turning it into starch
   3.making sucrose , for transport
   4.making cellulose , to build cell walls
   5.making nectar to attract pollinators
3. making amino acids , to make proteins
4. making other substances eg: chlorophyll

Question 16

Give the definition of sucrose

Answer 16

sucrose is a sugar whose molecules are made of glucose and another similar molecule (fructose) linked together