| What does boiling a leaf do? | It kills the leaf and stops it photosynthesising |
| What does leaving a leaf in ethanol do? | removes the green colour (chlorophyll) |
| What does rinsing a leaf in warm water do? | softens it |
| What does adding iodine to a leaf do? | lets us see if the leaf contains starch |
| What is photosynthesis? | the process by which green plants use carbon dioxide from the air and water from the soil to produce sugar and oxygen gas |
| What does photo mean? | light |
| What does synthesis mean? | to build |
| Where does photosynthesis take place? | In the chloroplasts |
| What chemical in leaves traps light energy from the sun? | chlorophyll |
| What are the raw materials of photosynthesis? | carbon dioxide and water |
| What are the essential requirements in photosynthesis? | chlorophyll and light energy |
| What are the products of photosynthesis? | glucose and oxygen |
| What does the plant do with the products of photosynthesis? | it can be used immediately by the plant or it can be converted into starch and stored in the chloroplasts |
| Where does the carbon dioxide and the water come from? | carbon dioxide comes from the air and water comes from the soil |
| What is the name of a leaf with more than one colour? | verigated |
| Why do plants need to be destarched before a photosynthesis test? | to make sure any starch produced is made under the conditions of the test |
| What will happen if one of the essential requirements or raw materials is in short supply? | the rate of photosynthesis will slow down |
| What is photosynthesis controlled by? | enzymes |
| What is a limiting factor? | any factor when in short supply will cut down or limit the rate of photosynthesis. |
| What is horticulture? | cultivation of plants in gardens, greenhouses and on farms |
| Why is supplementary lighting used? | to overcome a limiting factor - it gives the plants light 24 hours a day so they can carry on growing |
| What are paraffin heaters and why are they used? | they produce carbon dioxide and heat so it helps the plants to grow |
| What does supplementary lighting and paraffin heaters do? | they help with the growth rate of the plants |
