Download App

Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development1 Mark
MCQ
High concentration of auxin is present in:
  • A
    Root apex
  • B
    Shoot apex
  • C
    Petiole
  • D
    Node
✓

Answer

  1. Shoot apex

Explanation:

Auxin is a plant hormone. It is produced in high concentration at the shoot apex.Apical dominance is a phenomenon in which central stem is dominant and lateral stems are suppressed.It promotes stem elongation and inhibits growth of lateral buds.Hence, low concentration of auxin inhibits growth in shoot.

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 Plant Growth and Development→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

Active division takes place in the cells of
→
Which of the following cells is not totipotent
→
Auxins are:
→
A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium how many bacteria will be produced at the end of  $ 3 $ hours
→
$FADH_2$ is produced during the following reaction
→
How many $ATP$ molecules are formed by oxidative phosphorylation from $NADH$ produced during single Krebs cycle?
→
Oxygenated blood is carried by
→
In an electron transport chain in terminal oxidation the cytochrome which donates electrons to $O_2$ is
→
What type of life cycle pattern is found in most of the algae?
→
Respiration is an
→