Which of the following is a food chain in this web?

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What is the source of energy for the grass?

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What could have caused these effects?

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What is the effect on soil nutrients and soil erosion?

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To which vertebrate group does it belong?

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Use the key to identify the animal.

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What is a main function of X?

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Which line correctly shows the path that was taken by a pollen tube to an ovule?

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Which position on the graph corresponds to the point at which the ribs are beginning to be raised?

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Which graph shows the rate and depth of breathing of the same person immediately after a period of exercise?

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How many of these arthropods are insects?

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Which process is taking place at X?

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In which experiment will the seeds germinate most quickly?

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Which labelled structures are found in plant cells but not in animal cells?

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Which feature indicates that it is a palisade cell?

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Which part would contain the breakdown products of bacterial cells?

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What happens and why?

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Why is it a good idea to brush teeth after eating?

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What type of cell is shown?

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Which feature is not common to all of these cells?

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What should be used to kill the weeds?

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What is this an example of?

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EDUCASTLE