<span>The question says,'...........convert ammonium into nitrates whilw .........converts nitrates into nitrogen gas. The correct option is A. Nitrification is a two stage process by which ammonia or ammonium is biologically oxidised to nitrate while dentrification is the biological oxidation of nitrate to nitrogen gas by dentrifying bacteria.</span>
It is not possible to see the different phases of mitosis in plant cells under a low-power objective microscope.
Under low-power objectives, individual plant cells can be seen as room-like compartments but the essential details of the contents of the cells cannot be seen. Thus, all the cells appear the same as if they are in an interphase phase of the cell cycle.
In order to view the different phases of mitosis in plant cells, higher magnifications such as high power would be required.
More on microscope magnification can be found here: brainly.com/question/20218099
Can i have A, B, C, and D please?