Plant Growth and Development

Assertion : Gibberellin is useful in early seed
production in conifers.
Reason : Ethephon is responsible for early
ripening in tomato and apple.

Assertion Photomodulation of flower is
phytochrome regulated process.
Reason Active form of phytochrome (Pfr)
directly induces floral induction in shoot
buds.

Assertion : The quiescent centre acts as a
reservoir of relatively resistant cells, which
constitute a permanent source of active initials.
Reason : The cells of the inactive region of
quiescent centre become active, when the
previous activ...

Apical dominance is caused by