Diversity of Fishes
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Questions and Answers

Which of the following is a characteristic of fishes?

  • Having paired fins
  • Being osmoconformers
  • Possessing limbs in the form of fins (correct)
  • Having internal ossification

    • What is the approximate number of living fish species?

  • 34,800 (correct)
  • 3
  • 200
  • 34,000

    • What does the term 'fishes' refer to?

  • Aquatic vertebrates with gills
  • All vertebrates that are not tetrapods
  • More than one species (correct)
  • One or more individuals of one species

    • Which group of fishes lack jaws, internal ossification, scales, and paired fins?

    <p>Cyclostomes (C)</p> Signup and view all the answers

    What is the major difference between hagfishes and lampreys?

    <p>Lampreys lack vertebrae (C)</p> Signup and view all the answers

    Which hypothesis suggests that hagfish and lamprey form a clade?

    <p>Cyclostomata Hypothesis (C)</p> Signup and view all the answers

    What is the term used to describe the group of modern fishes that lack jaws?

    <p>Cyclostomes (B)</p> Signup and view all the answers

    What is the main characteristic of jawless fishes' gill openings?

    <p>Pore-like (B)</p> Signup and view all the answers

    Which of the following is not a characteristic of fishes?

    <p>Being tetrapods (A)</p> Signup and view all the answers

    What is the term used to describe the skin covering of fishes?

    <p>Scales of dermal origin (A)</p> Signup and view all the answers

    Which property of water is responsible for the high resistance to motion, also known as 'Drag'?

    <p>Viscosity (B)</p> Signup and view all the answers

    What is the approximate speed at which sound travels in water compared to air?

    <p>5 times faster (D)</p> Signup and view all the answers

    Which zone in water has the highest light penetration?

    <p>Euphotic (Sunlight) Zone (A)</p> Signup and view all the answers

    What is the main waste product eliminated by fish?

    <p>Ammonia (A)</p> Signup and view all the answers

    Which group of fishes is known for their barbels, electric organs, and luminescence adaptations in the Disphotic (Twilight) Zone?

    <p>Gnathostomata (A)</p> Signup and view all the answers

    Which group of fishes includes hagfishes and lampreys?

    <p>Cyclostomata (A)</p> Signup and view all the answers

    Which group of fishes is characterized by having jaws and paired fins?

    <p>Gnathostomata (A)</p> Signup and view all the answers

    What is the abbreviation FSGD in the context of fish genome duplications?

    <p>Fish Specific Genome Duplications (A)</p> Signup and view all the answers

    Which resource provides a genome browser for fish species?

    <p>Ensembl.org (A)</p> Signup and view all the answers

    How many fish genomes are currently available on Ensembl.org?

    <p>89 (A)</p> Signup and view all the answers

    Which of the following is a characteristic of jawed fishes?

    <p>Bony endoskeleton (D)</p> Signup and view all the answers

    Which group of fishes is characterized by placoid scales and a cartilaginous endoskeleton?

    <p>Sharks, Skates &amp; Rays (D)</p> Signup and view all the answers

    Which group of fishes is characterized by a bony endoskeleton and a swim bladder?

    <p>Ray-Finned Fishes (A)</p> Signup and view all the answers

    Which group of fishes is characterized by fleshy or lobed finned and share a common ancestor with tetrapods?

    <p>Sarcopterygii (D)</p> Signup and view all the answers

    Which group of fishes is characterized by fins with webs of skin supported by fin rays?

    <p>Neopterygii (C)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost and elasmobranch-like characteristics?

    <p>Chondrostei (C)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost and elasmobranch-like characteristics and is less shark-like than chondrosteins?

    <p>Holostei (C)</p> Signup and view all the answers

    Which group of fishes is characterized by improvements to fins and jaw and includes the majority of fish species?

    <p>Teleostei (D)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost-elasmobranch characteristics and has vestigial spiracles?

    <p>Holostei (A)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost-elasmobranch characteristics and has spiracles for breathing?

    <p>Chondrostei (C)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost and elasmobranch-like characteristics and is less shark-like than chondrosteins?

    <p>Bony fishes (A)</p> Signup and view all the answers

    What is the main characteristic of jawless fishes' gill openings?

    <p>Pore-like openings (B)</p> Signup and view all the answers

    Which group of fishes is known for their barbels, electric organs, and luminescence adaptations in the Disphotic (Twilight) Zone?

    <p>Cartilaginous fishes (A)</p> Signup and view all the answers

    Which group of fishes is characterized by having jaws and paired fins?

    <p>Lobe-finned fishes (B)</p> Signup and view all the answers

    Which group of fishes is characterized by a bony endoskeleton and a swim bladder?

    <p>Bony fishes (A)</p> Signup and view all the answers

    What is the term used to describe the skin covering of fishes?

    <p>Scales (A)</p> Signup and view all the answers

    Which of the following is a characteristic of fishes?

    <p>Internal ossification (B)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost-elasmobranch characteristics and has vestigial spiracles?

    <p>Cartilaginous fishes (C)</p> Signup and view all the answers

    Which hypothesis suggests that hagfish and lamprey form a clade?

    <p>Cyclostomata Hypothesis (A)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost-elasmobranch characteristics and has spiracles for breathing?

    <p>Cartilaginous fishes (A)</p> Signup and view all the answers

    Which property of water is responsible for the high resistance to motion, also known as 'Drag'?

    <p>Viscosity (D)</p> Signup and view all the answers

    What is the approximate speed at which sound travels in water compared to air?

    <p>5 times faster (D)</p> Signup and view all the answers

    What is the main waste product eliminated by fish?

    <p>Ammonia (D)</p> Signup and view all the answers

    Which group of fishes is known for their barbels, electric organs, and luminescence adaptations in the Disphotic (Twilight) Zone?

    <p>Osteichthyes (B)</p> Signup and view all the answers

    What is the approximate number of living fish species?

    <p>10000 (A)</p> Signup and view all the answers

    Which group of fishes includes hagfishes and lampreys?

    <p>Cyclostomata (B)</p> Signup and view all the answers

    Which group of fishes is characterized by fleshy or lobed finned and share a common ancestor with tetrapods?

    <p>Sarcopterygii (C)</p> Signup and view all the answers

    Which group of fishes is characterized by fins with webs of skin supported by fin rays?

    <p>Osteichthyes (D)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost and elasmobranch-like characteristics and is less shark-like than chondrosteins?

    <p>Chondrichthyes (B)</p> Signup and view all the answers

    What is the term used to describe the skin covering of fishes?

    <p>Scales (A)</p> Signup and view all the answers

    Which group of fishes is characterized by a bony endoskeleton and a swim bladder?

    <p>Osteichthyes (D)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost and elasmobranch-like characteristics and is less shark-like than chondrosteins?

    <p>Chondrichthyes (D)</p> Signup and view all the answers

    Which group of fishes is characterized by a mix of teleost-elasmobranch characteristics and has spiracles for breathing?

    <p>Chondrichthyes (D)</p> Signup and view all the answers

    What is the approximate number of living fish species?

    <p>22,000 (D)</p> Signup and view all the answers

    What is the abbreviation FSGD in the context of fish genome duplications?

    <p>Fish Sub-Genome Duplication (A)</p> Signup and view all the answers

    Which group of fishes is characterized by fins with webs of skin supported by fin rays?

    <p>Osteichthyes (B)</p> Signup and view all the answers

    What is the main characteristic of jawless fishes' gill openings?

    <p>Internal gill slits (A)</p> Signup and view all the answers

    What is the term used to describe the group of modern fishes that lack jaws?

    <p>Jawless fishes (C)</p> Signup and view all the answers

    Which group of fishes is characterized by placoid scales and a cartilaginous endoskeleton?

    <p>Chondrichthyes (C)</p> Signup and view all the answers

    Which group of fishes is characterized by fleshy or lobed finned and share a common ancestor with tetrapods?

    <p>Sarcopterygii (D)</p> Signup and view all the answers

    Which group of fishes is characterized by having jaws and paired fins?

    <p>Osteichthyes (C)</p> Signup and view all the answers

    True or false: Fishes form a monophyletic group.

    <p>False (B)</p> Signup and view all the answers

    True or false: Hagfish and lampreys are jawless fishes.

    <p>True (A)</p> Signup and view all the answers

    True or false: Fishes can adjust to the salt and water balance of their environment.

    <p>True (A)</p> Signup and view all the answers

    True or false: Most studies based on anatomy have supported the vertebrate hypothesis for jawed fishes.

    <p>True (A)</p> Signup and view all the answers

    True or false: Hagfish lack all vertebra-like structures.

    <p>False (B)</p> Signup and view all the answers

    True or false: Lamprey and hagfish belong to a monophyletic group known as Cyclostomata.

    <p>True (A)</p> Signup and view all the answers

    True or false: Density is 800 times greater than air.

    <p>True (A)</p> Signup and view all the answers

    True or false: Viscosity is approximately 50 times greater than air.

    <p>True (A)</p> Signup and view all the answers

    True or false: Water has a high resistance to motion, also known as 'Drag'.

    <p>True (A)</p> Signup and view all the answers

    True or false: Light penetration decreases with depth in water.

    <p>True (A)</p> Signup and view all the answers

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