Refer to this portion of a dichotomous key for fish identification to answer the question.1. (a) Has a single dorsal fin ? 5(b) Has a double dorsal fin ? 25. (a) Has small fin on back near tail ? 6(b) Has no fin on back near tail ? 76. (a) Has barbs near the mouth ? Catfish(b) Does not have barbs near the mouth ? 10What do the numbers after the arrows represent?the number of the question that should be considered nextthe number of points that should be added to the organism's identity totalthe p