OnlineCBT Logo OnlineCBT
⚲
हिन्दी
OnlineCBT Logo OnlineCBT
⚲

Botany · PYQ NEET UG 2023

हिन्दी

Which hormone promotes internode/petiole elongation in deep water rice?

  1. A
    Ethylene
  2. B
    Kinetin
  3. C
    \( \text{GA}_3 \)
  4. D
    2, 4-D
View Answer & Solution

Correct answer · Option A

Ethylene

Explanation

Ethylene promotes rapid internode/petiole elongation in deep-water rice plants, helping leaves remain above water.

Related questions

Which of the following statements are correct about Klinefelter's Syndrome? A. This disorder was first described by Langdon Down (1866). B. Such an individual has overall masculine development. However, the feminine development is also expressed. C. The affected individual is short statured. D. Physical, psychomotor and mental development is retarded. E. Such individuals are sterile. Choose the correct answer from the options given below :→Axile placentation is observed in→Movement and accumulation of ions across a membrane against their concentration gradient can be explained by→The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?→
OnlineCBT

Our mission is "To educate students and help them excel in competitive exam preparation to the best of their potential. To impart good values in students and develop their overall exam readiness."

Useful Link
Important Pages
Courses & Practice
Contact
Address

Plot No 10, Dholigumti, Panditpura Road, Bandikui, Dausa(Raj) 303313

Contact

+91 7877547686

 E-mail

onlinecbtportal@gmail.com

 Helpline Number

+91 7877547686
Share
Click To Download
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

Terms of Use | Privacy Policy | Cookie Policy | Disclaimer | Editorial Policy | Fact Check | Corrections | DMCA | Ad Choices

Copyright © 2026 - OnlineCBT.in. All Rights Reserved.

WhatsApp Chat