In females,the period around $45-50$ years of age is known as:

$A$ simple multicellular animal that has tentacles and lives in freshwater. Which of the following asexual methods of reproduction does it use?

At approximately what age does menstruation permanently cease in females?

Which of the following organisms undergoes binary fission?

What is the effect of $DNA$ copying,which is not perfectly accurate,on the reproduction process? How does the amount of $DNA$ remain constant though each new generation is a combination of $DNA$ copies of two individuals?

The correct sequence of reproductive stages seen in flowering plants is