NEET Solved Paper 2014 Question 18
Question: Dr. F Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. Of what significance is this experiment? [AIPMT 2014]
Options:
A) It made possible the isolation and exact identification of auxin
B) It is the basis for quantitative determination of small amounts of growth-promoting substances
C) It supports the hypothesis that IAA is auxin
D) It demonstrated polar movement of auxins
Show Answer
Answer:
Correct Answer: A) It made possible the isolation and exact identification of auxin
Solution:
- The experiment conducted by Dr. F Went, where coleoptile tips were removed and placed on agar, which then caused bending when placed on one side of freshly cut coleoptile stumps, is significant because it led to the isolation and identification of auxin. This experiment demonstrated that a substance (later identified as auxin) was responsible for the growth-promoting effect observed in plants.
BETA
