Neet Solved Paper 2015 Question 21
Question: In a ring girdled plant
Options:
A) the shoot dies first
B) the root dies first
C) the shoot and root die together
D) Neither root nor shoot will die
Show Answer
Answer:
Correct Answer: B
Solution:
- In a ring girdled plant, the root dies first. A ring of bark is cut from the stem. It also removes phloem. Nutrients collect above the ring where the bark also swells up and may give rise to adventitious roots. Growth is vigorous above the root. The tissues below the ring not only show stoppage of growth but also begin to shrivel (contract). Roots begin to starve first if the ring is not healed, after sometime roots will die, which will kill the whole plant.
