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Questions and Answers
What is the defining characteristic of fish according to the given text?
What is the defining characteristic of fish according to the given text?
- Animals with no limbs or gills
- Aquatic animals with limbs and gills
- Gill-bearing animals that lack limbs with digits (correct)
- Aquatic and craniate animals with limbs and digits
Which phyla do vertebrates fall into, according to Cladists?
Which phyla do vertebrates fall into, according to Cladists?
- Chondriritches
- Chordata (correct)
- Osteicthyes
- Agnatha
What percentage of fish species belong to rayfinned fish?
What percentage of fish species belong to rayfinned fish?
- 50%
- 95% (correct)
- 80%
- 75%
Which group do all vertebrates fall into according to the text?
Which group do all vertebrates fall into according to the text?
What are the key features that all chordates have at some stage in life, according to the text?
What are the key features that all chordates have at some stage in life, according to the text?
What group did all other tetrapod life evolve from, according to the text?
What group did all other tetrapod life evolve from, according to the text?
What is the key characteristic of the Dorsal Nerve cord?
What is the key characteristic of the Dorsal Nerve cord?
Which group of non-vertebrate chordates consists of filter feeders with an early free swimming larval stage?
Which group of non-vertebrate chordates consists of filter feeders with an early free swimming larval stage?
Which group is considered very primitive but has been key in understanding vertebrate evolution?
Which group is considered very primitive but has been key in understanding vertebrate evolution?
What is the sister group of the tunicata according to the text?
What is the sister group of the tunicata according to the text?
Which group of fish is represented by a group of small, jawless, armored fish known as ostracoderms?
Which group of fish is represented by a group of small, jawless, armored fish known as ostracoderms?
What characteristic is unclear about the advantage of a hinged jaw in jawed vertebrates?
What characteristic is unclear about the advantage of a hinged jaw in jawed vertebrates?
Why are fishes considered a paraphyletic group?
Why are fishes considered a paraphyletic group?
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