All Exams Test series for 1 year @ ₹349 only
Question

Which hormone promotes cell elongation in young shoots through acid growth, involving activation of proton pumps and cell-wall loosening?

This question was previously asked in
SSC CGL 2020 Tier-II (English) Previous Year Paper (29-Jan-2022)
The correct answer is

Auxin

Auxin promotes acid growth: proton pumps acidify the cell wall, enabling wall loosening and elongation. The specific mechanism distinguishes it from the broader growth effects of gibberellins.

Was this answer helpful?

Similar Questions

  1. Which of the following has the highest protein content per gram?

  2. ______ part of xylem tissue in plants stores food.

  3. In leaves transpiration takes place through ________.

  4. The development of a fruit without fertilization is called ______.

  5. _______ is the pattern of veins in the blade of a leaf.

  6. Among plants, three different genera Solanum, Petunia and Datura are placed in which family?

  7. Photosynthesis takes place in the presence of chlorophyll and _________.

  8. The first formed primary xylem elements are called ___________.

  9. Sexual reproduction in Algae that takes place through fusion of two similar size gametes is called?

  10. Bryophytes are also called _________ of the plant kingdom.


Important Questions from Botany

  1. Which of the following is a type of nutrition?

    I. Heterotrophic

    II. Autotrophic

  2. Part of N 2cycle that is opposed to N 2fixation is:

  3. Which among the following is the reproductive part of a plant?

  4. Fibres (Adventitious) roots are found in :

  5. In which Part of the flower does Meiosis take place ?

Need Expert Advice?
Upcoming Exams
UPSSSC PET
October 30, 2026
SSC JE
November 02, 2026
SSC CPO
November 20, 2026
SSC CHSL
November 30, 2026
Test Series
SSC CGL img
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2503 Tests 6 Tests Free
8560 Attempts
4.2(933)
English, Hindi

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App