Final answer:
There is no cross-ring conjugation in 2-methylbiphenyl, as the molecular structure does not allow pi system delocalization over adjacent rings.
Step-by-step explanation:
No, there is no cross-ring conjugation in 2-methylbiphenyl. In this molecule, there are two benzene rings connected at a single point; however, because the methyl group is located on the second carbon of one of the benzene rings, it does not enable conjugation to extend across both rings. Cross-ring conjugation typically requires a chemical structure where the pi system can delocalize over adjacent rings, which is not the case with 2-methylbiphenyl.