Class Cyclostomata
Trending Questions
Q. The vertebral column is cartilaginous in:
- Osteichthyes
- Cyclostomes
- Urochordates
- Cephalochordates
Q. Members of agnatha exhibit________
- migration to marine water
- similar exoskeleton like fishes
- similar circulatory system as that of earthworm
- sucking mouth with jaws
Q.
Number of gill slits in cyclostomes is
15-30 pairs
6-15 pairs
5-16 pairs
9-10 pairs
Q. Maximum number of gill slits are present in
- shark
- lamprey
- rohu
- both a and b
Q. Choose the correct statement.
- Starfish is radially symmetrical with lateral line system
- Jellyfish is radially symmetrical with polyploid body form
- Silverfish is bilaterally symmetrical and marine
- Lamprey is bilaterally symmetrical with circular jawless mouth which is used for sucking
Q. A marine jawless fish, which lays eggs in fresh water and whose larvae after metamorphosis return to the ocean is:
- Petromyzon
- Eptatretus
- Myxine
- Neomyxine
Q. Class cyclostomata includes all .
- jawed vertebrates
- jawed invertebrates
- jawless vertebrates
- jawless invertebrate
Q. A cold blooded animal is the one which has
- cold blood
- low body temperatures
- cold habitat
- no regulatory system of body temperature
Q. Lamprey is
- not parasitic
- jawless vertebrate
- jawed fish
- with paired fins
Q.
Jawless, exclusive marine bottom dwelling ectoparasites with cartilaginous vertebral column are grouped under the class:
Cephalochordata
Urochordata
Osteichthyes
Cyclostomata
Q. Class cyclostomata includes all .
- jawed vertebrates
- jawed invertebrates
- jawless vertebrates
- jawless invertebrate
Q. Vertebrates without jaws are included in the class:
- Agnatha
- Cyclostomata
- Hemichordata
- Chondrichthyes
Q. __________ migrates to fresh water for spawning.
- Eel
- Petromyzon
- Exocoetus
- Clarias