Which plant growth regulator is responsible for triple response? - Vidyadip

MCQ

Which plant growth regulator is responsible for triple response?

✓
$C _{2} H _{4}$
B
$IAA$
C
$IBA$
D
$ABA$

✓

Answer

Correct option: A.

$C _{2} H _{4}$

a
Firstly, a Russian Physiologist Dimitry N Nelijubow who established ethylene's triple response on pea seedling. These triple responses are

$(a)$ inhibited stem elongation

$(b)$ increased stem thickening

$(c)$ horizontal growth habit

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Identify the wrong statements for gymnosperms from below.
(i) Gymnosperms include medium-sized trees or tall trees and shrubs.
(ii) Giant red wood tree Sequoia is one of the tallest tree species.
(iii) The roots are generally adventitious roots.
(iv) Roots in some genera have fungal association in the form of mycorrhiza (Pinus).
(v) The leaves may be simple or compound.

Which of the following pair of organelles does not contaln $DNA$

The conversion of PGA into glyceraldehyde 3-phosphate occurs during

Statement I: Crossing over is non enzymatic process.
Statement II: The final stage of meiotic prophase I is diakinesis.

Select the wrong statement.

The physiological capacity to produce offsprings is called

If the sequence of one strand of $DNA$ is $5^{\prime}$ $A T G C A T C G 3'$ , find the sequence of complementary strand in $5^{\prime} \rightarrow 3^{'}$ direction

Which of the following is pteridophytes belong to class-Pteropsida?

In unisexual plants, sex can be changed by the application of