What order has the most living bony fish species? a. ...

[imanialler]

What order has the most living bony fish species?
  a. Chondrichthyes
  b. Osteichthyes
  c. Teleostei
  d. Coelacanths

Question 2

What needle-like structure provides a skeletal network for a sponge?
  a. Cnidoblasts
  b. Polyps
  c. Spicules
  d. Zooxanthellae

[shewald78]

Answer to Question 1

ANS: C
Approximately 90 of all living bony fish are in the order Teleostei. There are a variety of fin,
camouflage, migration patterns, and social interactions to occupy every marine environment.
Information can be found in the section Fishes Are Earth's Most Abundant and Successful Vertebrates

Answer to Question 2

ANS: C
Spicules are made of calcium carbonate or silica. They prevent the internal cavities from collapsing.
Spongin, a protein, provides the same function. Information can be found in the section Invertebrates
Are the Most Successful and Abundant Animals.

[imanialler]

Thanks

[shewald78]

Welcome