Explain briefly :
Chitinase

Explain briefly PCR

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain them.

explain briefly with suitable example Archegonium

explain briefly with suitable example Protonema

explain briefly with suitable example Diplontic

explain briefly with suitable example Antheridium

explain briefly with suitable example Sporophyll