Plants for Food W Richards Worthing High School
Food chains Cabbage Rabbit Stoat Fox Plants convert the sun’s energy into food The arrows indicate where the energy is going A food chain shows where the energy goes in a food chain (in other words, “what gets eaten by what”): Plants are called “producers” – they “produce” the energy for the rest of the food chain through photosynthesis.
Using plants for food Fruits and seeds Roots Leaves Stems
Helping plants to grow Advantages Disadvantages Too much of it can kill pond life Provide nutrients Disrupt food chains Kill weeds NPK Kill pests Farmers can use a number of chemicals to help plants to grow: 1) Fertilisers 2) Herbicides 3) Pesticides Disrupt food chains
Another disadvantage of pesticides Small plants Marine insects Fish Kingfisher Insecticides can wash into a stream or lake where they are taken up by microscopic water plants. Consider the food chain: 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.