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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 ® 2
5. (a) Has small fin on back near tail ® 6
(b) Has no fin on back near tail ® 7
6. (a) Has barbs near the mouth ® Catfish
(b) Does not have barbs near the mouth ® 10

According to this dichotomous key, any catfish must have
a double dorsal fin, a small fin on the back near the tail, and barbs near the mouth.
a single dorsal fin, no small fin on the back near the tail, and barbs near the mouth.
a double dorsal fin, a small fin on the back near the tail, and no barbs near the mouth.
a single dorsal fin, a small fin on the back near the tail, and barbs near the mouth.

Respuesta :

PingPongChild
A single dorsal fin, a small fin on the back near the tail and barns near the mouth
Lanuel

According to this dichotomous key, any catfish must have: D. a single dorsal fin, a small fin on the back near the tail and barns near the mouth.

What is a dichotomous key?

A dichotomous key can be defined as a method of identification and classification that is used to repeatedly group the species of an organism into various categories, so as to reveal more information about the specific features of each organism based on the sequential division.

In this scenario, we can deduce that in accordance with the dichotomous key, any catfish must possess the following qualities:

  • A single dorsal fin.
  • A small fin on the back near the tail.
  • Barns near the mouth.

Read more on dichotomous key here: https://brainly.com/question/10606660

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