Why did cupid shoot Apollo and Daphne with a bow and arrow?

Cupid shot Apollo and Daphne with a bow and arrow because Apollo had mocked his Archery skills, and Daphne had vowed to remain unmarried and chaste. By shooting Apollo with a golden arrow of love and Daphne with a lead arrow of aversion, Cupid caused Apollo to fall in love with Daphne, who in turn rejected his advances and was transformed into a laurel tree.