Unit B624/02 - OCR

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(ii) Using wasps to eat greenflies is an example of biological control. Many gardeners prefer to use biological control instead of chemical pesticides. Write down TWO advantages of using biological control. 1 ______________________________________ _______________________________________ 2 ______________________________________ _____________________________________ [2] [Total: 4] 10
3 Plants need minerals to grow. They usually get these minerals from the soil. (a) Some plants can NOT get enough minerals from the soil. Their leaves are adapted to trap insects. They digest the insects to get the minerals they need. One plant that does this is the venus fly trap. The venus fly trap does not get enough nitrates from the soil. Instead it gets nitrogen compounds from the insects. (i) What do plants look like if they do not get enough nitrates? _____________________________________ [1] (ii) The venus fly trap also needs magnesium compounds. Write down ONE chemical in the plant that contains magnesium. _____________________________________ [1] 11
Page 1 and 2: Candidate Forename Centre Number Ca
Page 3 and 4: EQUATIONS speed = distance time tak
Page 5 and 6: Answer ALL the questions. SECTION A
Page 7 and 8: (c) The scientist says that the pla
Page 9: (b) Tomato plants are often grown i
Page 13 and 14: (iii) Most plant leaves are NOT ada
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Page 17 and 18: (b) The overuse of fertilisers some
Page 19 and 20: (c) Another way of cleaning clothes
Page 21 and 22: lakes and reservoirs sedimentation
Page 23 and 24: 8 This question is about acids and
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Page 27 and 28: (c) Static electricity can also be
Page 29 and 30: 11 ULTRASOUND scans are used in hos
Page 31 and 32: (ii) An X-ray gun is rotated around
Page 33 and 34: (c) Background radiation is always
Page 35 and 36: Copyright Information OCR is commit

Unit B624/02 - OCR

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