Gibberellins and Plant Growth — NEET Biology
✅ Asked in NEET 2024Sugarcane stores carbohydrate as sugar in their stems. Spraying sugarcane crop with gibberellins increases the length of the stem, thus increasing the yield by as much as 20 tonnes per acre.
NTA tests gibberellins' role in promoting stem elongation and increasing crop yield, specifically in sugarcane. Students often confuse gibberellins with other hormones or mistakenly think all plant hormones increase yield equally—this is wrong. Gibberellins specifically promote cell elongation in stems, not width, and increase yield by extending stem length where carbohydrates accumulate. Key point: gibberellins increase stem length → more storage space for sugars → higher yield (up to 20 tonnes/acre). Remember that gibberellins work through cell elongation, not cell division, and their application is a practical agricultural use tested frequently in NEET.
This paragraph was tested 2 times in NEET.
Spraying sugarcane crop with which of the following plant growth regulators increases the length of stem, thus increasing the yield? (NEET 2024)
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop. (NEET 2020)
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.