Exam (elaborations)
H020/02, Depth in biology (AS/A level), June 2023/2024 computing Administrator
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). Aphids are small insects that feed on the sap that is translocated through the plant in the phloem. These insects insert their fine mouthparts, stylets, into phloem tissue and allow the sap to flow out of the phloem. One method of collecting sap is to allow the aphid to feed as shown in Fig....
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