EDTA inhibits the activity of DNase during DNA isolation process.
DNase is an enzyme which degrades DNA using divalent metal ions like Mg^{2+} . These metal ions act as cofactor for the proper functioning of DNase.
EDTA chelates the divalent metal ions and thus does not allow DNase to access them.
Therefore in this way DNA is prevented from degradation during its isolation.
Flowers and fruits are used by angiosperms to reproduce, while gymnosperms have unenclosed or "Naked" seeds on the surface of leaves or as cones
In both you are unable to breathe.
Water is photolysed to produce electrons, H+ ions and O2.
The equations is 2H2O ->4H+ + 4e- + O2
