Download App

STD 11 - 13. Plant growth and development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 13. Plant growth and development1 Mark
MCQ
Cell elongation in internodal region takes place due to
  • ✓
    Gibberellins
  • B
    Ethylene
  • C
    Cytokinins
  • D
    Indole acetic acid
✓

Answer

Correct option: A.
Gibberellins
a
(a)The gibberellins induce elongation of the internodes. The elongation of stem results due to rapid cell division and cell elongation induced by gibberellins.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 13. Plant growth and development→STD 11 - 13. Plant growth and development — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Select the correct option for photosynthesis in $C_3$-plants.
→
Thromboplastin required in blood clotting is secreted by:
→
Intercalary meristem is found between the
→
By whom is Bakane disease in paddy produced?
→
Non-protein part of an enzyme is known as
→
End product of glycolysis in anaerobic respiration occurs in human is
→
In mammals, the number of cervical vertebra is
→
A yellow substance oozing out from wound has
→
Match the following

$(a)$ Inhibitor of catalytic activity $(i)$ Ricin
$(b)$ Possess peptide bonds $(ii)$ Malonate
$(c)$ Cell wall material in fungi $(iii)$ Chitin
$(d)$ Secondary metabolite $(iv)$ Collagen

Choose the correct option from the following :

$(a)\quad(b)\quad(c)\quad(d)$

→
The basic functional unit of human kidney is
→