(i) the alkoxy group activates the benzene ring towards electrophilic substitution and

(ii) it directs the incoming substituents to ortho and para positions in the benzene ring.

(i)

The presence of the + R effect of the alkoxy group in aryl alkyl ethers enhances the electron density in the benzene ring, as shown in the resonance configuration below:

Therefore, a benzene ring is activated by the alkoxy group towards electrophilic substitution.

(ii) We can deduce from the above resonance arrangement that electron density ismore at the para and ortho locations than at the meta position. As a result, the entering substituent is guided to the para and ortho locations of the benzene ring.