Luke removed a ring of bark from the stem of a plant, as shown in the table below. After a week, the part above the ring was swollen. What was the cause of this?
Show Worked Solution
Worked Solution
Step 1: Removing the outer ring of bark removes the phloem (food-carrying tubes).
Step 2: Food produced in the leaves travels downwards to the roots.
Step 3: When blocked, food accumulates above the ring, causing it to swell.
Correct answer: Food could not reach the roots.
Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.
Start Free Trial — 7 Days Free