$6$-furfuryl amino purine $(A)$,$2,4$-dichlorophenoxy acetic acid $(B)$,and indole-$3$-acetic acid $(C)$ are examples respectively of:

  • A
    $A-$ Synthetic auxin,$B-$ Kinetin,$C-$ Natural Auxin
  • B
    $A-$ Gibberellins,$B-$ Natural auxin,$C-$ Kinetin
  • C
    $A-$ Natural auxin,$B-$ Kinetin,$C-$ Synthetic auxin
  • D
    $A-$ Kinetin,$B-$ Synthetic auxin,$C-$ Natural auxin

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Match column-$I$ with column-$II$ and select the correct option using the codes given below.
Column-$I$Column-$II$
$A$. Cytokinin$i$. Stimulates closure of stomata
$B$. Ethylene$ii$. Increases stem length
$C$. Gibberellin$iii$. Promotes lateral shoot growth
$D$. Abscisic acid$iv$. Found in large amounts in tissues undergoing senescence

Plant movement in response to diffuse stimulus of light is

Plants are killed in winter by frost because:

Thigmotropism is the response of the plant to

Name a hormone which:
$(A)$ is gaseous in nature
$(B)$ is responsible for phototropism
$(C)$ induces femaleness in flowers of cucumber
$(D)$ is used for killing weeds (dicots)
$(E)$ induces flowering in long day plants

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