Define : (i) Juvenile phase, (ii) Reproductive phase, (iii) Senescent phase.

What is senescent phase?

G_(0) phase is

Reproduction phase in female begins from the age of

In many plants the change over from vegetative to reproductive phase takes place in response to

Mention the phases of growth.

In human females an event that reflects onset of reproductive phase is called …………….

Outline the principles of refining metals by the following methods : (i) Zone refining (ii) Electrolytic refining (iii) Vapour phase refining

Define the following with one example for each : (i) Genetic Drift. (ii) Natural selection. (iii) Reproductive isolation.

Match the items given in Coulmn I with those Coulmn II and select the correct option given below {:("","Column I",,"Column II"),((a),"Proliferative phase" ,(i),"Breakdown of endometerial lining "),((b),"Secretory phase " ,(ii),"Follicular phase "),((c),"Menstruation" ,(iii),"Luteal phase "):}