Question

By cutting the ring of phloem, which of the following process is affected?

• A. Downward flow of sugars
• B. Upward flow of salts
• C. Distribution of hormones
• D. All of the above

Answer 1

Answer: (A)

Downward flow of sugars

In plants, transportation of organic solutes occur in different directions by different tissues. Downward translocation of the these solutes takes place through phloem. Upward translocation of the solutes takes place through phloem and xylem. Radial translocation of solutes from pith to cortex takes place through medullary rays. Hence, if the ring of phloem is cut, downward flow of sugar will be affected.

Thus, the correct answer is 'Downward flow of sugars.'