Question

A soluble red dye is injected into the phloem of a young plant about half-way up the stem. At the same time a yellow dye is injected into the xylem at the same height along the stem. A day later the stem tip of the plant will contain _________ and the tip of the root _________

• A. only red dye, only yellow die
• B. only yellow dye, only red dye
• C. both red and yellow dye, only red dye
• D. only red dye, both red and yellow dye

Answer 1

The correct option is C both red and yellow dye, only red dye

Xylem is for ascent of sap-its upward .phloem will show bidirectional transport.