Q8 of 20 Page 17

Define

Senescent phase.

Senescent phase-This is the last phase of life span and ultimately leads to death. It is the period when an organism loses the ability to reproduce and grows old.


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8

Define

Juvenile phase,

 8

Define

Reproductive phase,

 9

Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

 10

Explain why meiosis and gametogenesis are always interlinked?