A) leaf abscission
B) annual plants
C) floral parts
D) All of the above
Correct Answer: D
Solution :
Senescence can be defined as the sum of deteriorative processes, which naturally terminate the functional life of an organisms. Senescence is not confined only to whole plant, it may be limited to a particular plant organ such as leaf and flower or cells such as phloem and xylem. Abscission is natural shedding of leaves, foliage branches, fruits, floral parts etc. According to Leopold (1967) abscission is a senesence phenomenon.
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