1. Can you remember what these words mean? Vertebrate;Quadrat; Herbivore; Pyramid of number; Producer; Carnivore;Food chain; Food web;Habitat; Invertebrate; Pyramid of biomass; Consumer;Vascular; Non-vascular;Pooter.

2. Looking at populations Open your books at the homework you did over the holidays Swap books with your neighbour Get a different coloured pen

3. GrassSheepFleas Beech Tree Caterpillars Blackbirds Grass Snails ThrushesStoat Rose bush Greenfly Ladybirds Parasites Question 1 2 marks for each correctly drawn food chain: 1 for animals in correct order 1 for arrows in correct direction

4. Grass SheepFleas Grass Sheep Fleas Pyramid of Numbers 4 marks for each correctly drawn pyramid of numbers: 2 for the bars being the correct length 1 for labelling the bars 1 for using a ruler

5. TreeCaterpillarsBlackbird Pyramid of Numbers

6. GrassSnailsThrushesStoat Pyramid of Numbers

7. Rose bush Greenfly Ladybirds Parasites Pyramid of Numbers Add up marks for question 1, maximum is 24

8. Model answer: a)Pesticide is sprayed onto crops, each insect eats some of the crop, so has eaten some pesticide. One small bird eats thousands of insects, therefore has eaten lots of pesticide. A predator like the hawk will eat hundreds of small birds. Each small bird has a lot of pesticide in it, so the hawk now has a very large dose of pesticide. b)The amount of pesticide taken in by organisms as you move along the food chain will increase. Question 2 a)Total 4 marks: 3 for correct reasoning 1 for use of full sentence b) Total 2 marks: 1 for correct answer 1 for full sentence

9. Question 3 Uses include: -Stops insects eating crops. -Farmers can produce more crops, therefore more food. -People do not have to get rid of pests by hand. Dangers include: -Pesticides can be dangerous to consumers higher up the food chain. -Pesticides can be harmful to the environment. Total 10 marks: 3 marks for clearly laid out and easy to read posters 7 marks for arguments: interesting and correct points made and evidence of further research.

10. Complete the topic summary