Fill in the blanks:
$(1)$ Maximum growth is observed in ........ phase.
$(2)$ Apical dominance is due to .......
$(1)$ Maximum growth is observed in ........ phase.
$(2)$ Apical dominance is due to .......
(A) $(1)$ The maximum growth rate is observed during the exponential phase (log phase),where the growth is rapid and follows a geometric progression.
$(2)$ Apical dominance is caused by the hormone auxin,which is produced in the apical buds and inhibits the growth of lateral buds.
$(2)$ Apical dominance is caused by the hormone auxin,which is produced in the apical buds and inhibits the growth of lateral buds.
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