Multiple Choice
Which of the following statements about diploblasts and triploblasts is false?
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21. Evolution
Introduction to Evolution and Natural Selection
Multiple Choice
Which group of fishes was the first to evolve during the course of evolution?
A
Jawless fishes (Agnatha)
B
Cartilaginous fishes (Chondrichthyes)
C
Lobe-finned fishes (Sarcopterygii)
D
Bony fishes (Osteichthyes)
Verified step by step guidance1
Understand the evolutionary timeline of fish: Evolutionary biology studies the development of species over time. In the context of fish, different groups evolved at different times.
Identify the major groups of fish: The main groups include jawless fishes (Agnatha), cartilaginous fishes (Chondrichthyes), lobe-finned fishes (Sarcopterygii), and bony fishes (Osteichthyes).
Recognize the characteristics of jawless fishes (Agnatha): These are the earliest group of fishes, characterized by the absence of jaws. They include species like lampreys and hagfish.
Compare the evolutionary timeline: Jawless fishes are considered the most primitive and were the first to appear in the fossil record, predating other groups like cartilaginous and bony fishes.
Conclude based on evolutionary evidence: Given the timeline and characteristics, jawless fishes (Agnatha) were the first group of fishes to evolve during the course of evolution.
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