1. (a) Has a single dorsal fin --> 5
(b) Has a double dorsal rsal fin--> 2
2. (a) Has small fin on back near tail --> 6
(b) Has no fin on back near tail --> 7
3. (a) Has barbs near the mouth --> Catfish
(b) Does not have barbs near the mouth --> 10
What do the numbers after the arrows represent?
A. the number of the question that should be considered next
B.the number of points that should be added to the organism's identity total
C. The probability that the organism has the described characteristic
D. the number of species that have the described characteristic
