OBJECTIVE LIFE SCIENCE
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The area of the leaf stalk that enables leaf drop and protects the stem from dessication and pathogen entry.
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Branch bark ridge
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Branch collar
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Abscission zone
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None of the above
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Explanation:
Detailed explanation-1: -The cauline leaf abscission zone enables cauline leaves to be shed.
Detailed explanation-2: -So, the correct option is ‘Parenchymatous’.
Detailed explanation-3: -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.
There is 1 question to complete.