Unit B624/02 - OCR

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2 A greenfly feeds from the stem of a tomato plant. The greenfly pushes a hollow tube into one of the tissues in the plant stem. It can then take sugar from this tissue. (a) Suggest which tissue the greenfly is most likely to pierce to get the sugar solution. Put a ring around the answer in this list. EPIDERMIS PHLOEM PALISADE XYLEM [1] 8
(b) Tomato plants are often grown in glasshouses. The plants produce fewer tomatoes when greenflies feed on them. A gardener releases some wasps into his glasshouse. The wasps eat the greenflies. (i) The following diagram gives information about the food chain in the glasshouse. wasps greenflies tomato plants Write down the name of this type of diagram. _____________________________________ [1] 9
Page 1 and 2: Candidate Forename Centre Number Ca
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Page 11 and 12: 3 Plants need minerals to grow. The
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Page 17 and 18: (b) The overuse of fertilisers some
Page 19 and 20: (c) Another way of cleaning clothes
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Page 27 and 28: (c) Static electricity can also be
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Page 31 and 32: (ii) An X-ray gun is rotated around
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Unit B624/02 - OCR

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