The question is incomplete as it does not have the options which are:
A-Flask A contained ammonium utilizers, and flask B contained nitrogen fixers that could grow with or without the presence of ammonium.
B-Flask A contained nitrogen fixers that could grow both with and without ammonium; flask B did not contain nitrogen fixers but did contain organisms that could use ammonium.
C-Flask A contained nitrogen fixers that could not tolerate the presence of ammonium; flask B contained ammonium utilizers.
D-Flask A contained ammonium utilizers and flask B contained nitrogen fixers that could not tolerate the presence of ammonium.
Flask A contained nitrogen fixers that could grow both with and without ammonium; flask B did not contain nitrogen fixers but did contain organisms that
Answer:
1. Flask A- contains nitrogen fixer which could grow with or without ammonium
2. Flask B- do not contain nitrogen fixer but contains bacteria which could use the ammonium to grow.
Explanation:
In the given question, the person grew bacteria in flask A with no nitrogen and when he grew bacteria with ammonium.
He would find the nitrogen fixer in flask A as no nitrogen was provided in the medium so the bacteria could fix the atmospheric nitrogen.
The flask B could be filled with bacteria that could use the ammonium form of the nitrogen as they are supplied with the ammonium.
Thus, the selected option is correct.
