MCQ
Which role is played by lactic acid bacteria $\ce{(LAB)}$ in our stomach?
- ✓Beneficial.
- BHarmful.
- CNeutral.
- DAll of these.
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Assertion $A$: Endometrium is necessary for implantation of blastocyst.
Reason $R$: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below: