Which Experimental Observation Contributed to a Better Understanding of Translocation

question 96

Multiple Choice

Which experimental observation contributed to a better understanding of translocation in the phloem?

• A) Positive pressure in the xylem forced liquid out of cut aphid stylets.
• B) Positive pressure in the phloem forced liquid out of cut aphid stylets.
• C) Negative pressure in the xylem drew liquid in from cut aphid stylets.
• D) Negative pressure in the phloem drew liquid in from cut aphid stylets.
• E) Positive pressure in the xylem drew liquid in from cut aphid stylets.

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