1. Plants, photosynthesis and respiration Name _____________________

2. _________ travels up from the roots SUNLIGHT Gives the plant _________ The green chemical that _______ the light is called chlorophyll Things needed for photosynthesis _______ ________ gas comes from the air. Words: water, traps, energy, carbon dioxide

3. _________ gas goes into the air. This is important because animals need it for breathing. Things made by photosynthesis Plants make the carbohydrate called ______________. This is important as a food for animals. Words: oxygen, glucose

4. Carbon dioxide + _____ glucose + _____ 6CO 2 + 6H 2 0C 6 H 12 O 6 + 6O 2 Sunlight Chlorophyll Sunlight Chlorophyll Plants store the GLUCOSE produced by photosynthesis by joining it together in a ____________ reaction to make ____________ Words –starch, water, oxygen, polymerisation Photosynthesis equations

5. Respiration Words: carbon dioxide, energy, water, oxygen, glucose Respiration is the opposite of photosynthesis. It is a reaction that makes _______ for living things by reacting glucose and oxygen. ________ comes from the food and _________ comes from the air. _________ __________ gas and ________ are breathed back out.

6. Gas Exchange Air breathed inAir breathed out 79% 21%18% 0.03%3% The amounts of gases we breathe in and breathe out are not the same.

7. Global warming Words: fossil fuels, cut, same, global warming It is important that the processes of photosynthesis and respiration are balanced to make sure the levels of oxygen and carbon dioxide in the air stay the _____. Too much carbon dioxide can cause _______ ________. The amount of carbon dioxide in the air is getting higher because of two main reasons. More trees are being _______ down so they do not absorb so much carbon dioxide. We are burning more _______ ________ like petrol and this makes carbon dioxide.

8. Using plants for food Fruits and seeds Roots Leaves Stems

9. Helping plants to grow Farmers can use a number of chemicals to help plants to grow: 1) ____________ Provide nutrients The elements plants need are __________, ___________ and __________ NPK 2) ____________ Kill weeds 3) _____________ Kill pests like greenfly 4) _____________ Kill bacteria and prevents plant diseases. Words: herbicides, potassium, pesticides, nitrogen, fungicides, fertilisers, phosphorus

10. disadvantages of pesticides Although the level of insecticides in the plants is small, it will build up through the food chain due to the number of organisms in each stage. Small plantsKingfisherMarine insectsFish Pesticides are toxic chemicals so care needs to be taken when they are being used. They can also get into our food by being washed into rivers and streams and moving into the food chain.