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Q20. Which of the following plants does not show clear-cut vegetative, reproductive and senescent phase?

1. Perennial plants

Solution:

Annuals complete their life cycle in one year while biennials complete in two years. Hence, vegetative, reproductive and senescent phases are clearly visible. Example : Wheat, Rice, cabbage.

Perenials are the plants which grow for more than two years.Since they grow for a longer time and does not die out after flowering, the demarcation of three phases is not clear and it is very difficult to identify these phases.

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