Ch. 33 Bio 2

Card Set Information

Author:
patterson911
ID:
51683
Filename:
Ch. 33 Bio 2
Updated:
2010-11-25 16:02:48
Tags:
Deuterostomes
Folders:

Description:
Ch. 33 Bio 2
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user patterson911 on FreezingBlue Flashcards. What would you like to do?


  1. Ancestor of coelacanths, lungfishes, and tetrapods had what?
    jointed fins
  2. What are some characteristics of
    Lungfishes (Australian lungfish, African lungfish, S. American lungfish)?
    • · Freshwater
    • · Jointed pectoral and pelvic fins
    • · Breath via gills and lungs (modified swim bladder)
  3. What are some characteristic of
    Lobe-finned fishes (Coelacanths)?
    • · Marine
    • · Cartilagenous skeleton
    • · Breath via gills
    • · Jointed, fleshy pectoral and pelvic fins
  4. Ray-finned fishes characteristics?
    • · Bony skeletons
    • · Skin covered with flattened scales (most)
    • · Gills open to a chamber covered by a bony flap, the operculum
    • · Swim bladder regulates buoyancy
    • · Internal or external fertilizationOviparous or viviparous
  5. Example of Ray-finned fishes are?
    (barracuda, moray eel, seahorse, blacksmith fish, leafy sea dragon, Commerson’s frogfish)
  6. Chimeras “ratfish”?
    live at great depths; some have poisonous spine at front of first dorsal fin
  7. Skates and rays?
    dorsoventrally flattened bottom dwelling carnivores
  8. Sharks?
    most are carnivores; largest strain plankton
  9. Chondrichthyans include?
    • Sharks
    • Skates and rays
    • Chimeras “ratfish”
    • Ray-finned fishes
    • Lobe-finned fishes
    • Lungfishes
  10. Chondrichthyans characteristics?
    • · Cartilagenous skeleton
    • · Skin covered with placoid scales “dermal denticles”
    • · 5-7 pairs of gill slits
    • · No swim bladder
    • · Internal fertilization
    • · Oviparous, ovoviviparous* or viviparous
  11. Gnathostomes range in size from what to what?
    8mm to more than 6 meters in length
  12. Gnathostomes include what?
    chondrichthyans, ray-finned fishes, lobe-finned fishes and lung fishes
  13. Gnathostome Fishes characteristics?
    • · 2-chambered heart
    • · Respire primarily via gills
    • · Move through water via fins (most)
    • · Lateral line system for detection of vibrations
  14. Evolution of teeth allowed for what?
    grasping and breaking up of prey
  15. Jaws improve what?
    feeding efficiency and prey capture
  16. Jaws evolved from what?
    skeletal arches that supported the gills
  17. Gnathostomes “jaw mouths” are?
    vertebrates with jaws
  18. Jawless fishes common in past, the only one's surviving today are?
    only hagfishes and lampreys survive today
  19. What are some characteristics of
    Lampreys?
    • · Complete cranium; cartilaginous vertebrae
    • · Ventral heart with 2 chambers (atrium and ventricle)
    • · Respire via gills
    • · Jawless; sucker-shaped mouth and rasping tongue [secrete anticoagulant]
    • · Larvae filter feed; some adults parasitic
  20. What is the “Vertebrate Body Plan”?
    Vertebrates include fishes (most), amphibians and amniotes (reptiles and mammals)
  21. What are some characteristics of Vertebrates (craniates with vertebrae)?
    • · Jointed, dorsal vertebral column replaces notochord during early development
    • · Anterior skull with large brain
    • · Two pairs of appendages (except lampreys)
    • · Internal organs suspended in a coelom
    • · Closed circulatory system with a ventral heart

What would you like to do?

Home > Flashcards > Print Preview