Provide the full names of the following plant growth regulators:
$(1)$ $IBA$
$(2)$ $2,4-D$
$(1)$ $IBA$
$(2)$ $2,4-D$
(N/A) $(1)$ $IBA$ stands for Indole$-3-$butyric acid. It is a synthetic auxin used to promote root initiation in plant cuttings.
$(2)$ $2,4-D$ stands for $2,4-$Dichlorophenoxyacetic acid. It is a synthetic auxin widely used as a selective herbicide to kill broad-leaved weeds.
$(2)$ $2,4-D$ stands for $2,4-$Dichlorophenoxyacetic acid. It is a synthetic auxin widely used as a selective herbicide to kill broad-leaved weeds.
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