Question

Some plants like sugarbeet and cabbage required low temperature for floweringThis phenomenon is called (1)Photoperiodism (2)Parthenocarpy (3)Vemalisation (4)Abscission

Answer 1

Answer:

3) Vernalisation

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Answer 2

Answer:

(3)- Vemalisation

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.