i. Latitudinal gradients Species diversity decreases from the equator to the poles. Tropics (latitudinal range of  23.5o N to 23.5o ...

The very intresting example of recapitulation is the development of man . The recapitulation theory was proposed by Von Baer .This theory ...

It can be defined as artificial encapsulation of somatic embryos which is derived from plant tissue culture. The encapsulated somatic embr...

It is a proven way  of increasing productivity of many crop plants . It is also called as hybrid vigour or outbreeding enhancement.  It le...

Transcription is formation of RNA from DNA by the help of enzyme Rna polymerase . It occurs in the nucleus during the  G 1  & G 2...

A chemical substance produced and then released into environment by an animal (Mammal or an ants)  which affects the behaviour and physiolo...