Question

The end of juvenile phase in angiospermic plant is
marked by
Formation of flower
(2)Formation of fruit without seed
(3)Abscission of all leaves in autumn
(4)Initiation of axillary bud

Answer 1

Answer

Formation of flower....

Explanation

The beginning of reproductive phase(start of reproduction)/(formation of flowers) in plants, marks the end of a Juvenile phase in flowering plants.

Answer 2

Answer:

1. Formation of flower

Explanation:

Structural. In deciduous trees, an abscission zone, also called a separation zone, is formed at the base of the petiole. It is composed of a top layer that has cells with weak walls, and a bottom layer that expands in the autumn, breaking the weak walls of the cells in the top layer. This allows the leaf to be shed.