Which Information About the Use of Aphids in Studying Translocation

question 226

Multiple Choice

Which information about the use of aphids in studying translocation is least likely to contribute to our understanding of this process?

• A) Aphids may be used to collect phloem sap.
• B) Phloem sap may be collected from a single sieve tube element using aphid stylets.
• C) Sap collected from aphids may be used to determine rates of translocation by labeling phloem sap with radioisotopes.
• D) Experiments with aphid stylets may show that flow in a single sieve tube element is unidirectional.
• E) Aphids may store crystallized sugar in their stomachs when feeding on plants.

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