« previous next »

Author Question: The swim bladder of ray-finned fishes A) was probably modified from simple lungs (Read 691 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
The swim bladder of ray-finned fishes
A) was probably modified from simple lungs of chondrichthyans.
B) developed into lungs in saltwater fishes.
C) first appeared in sharks.
D) provides for regulation of buoyancy.
E) Two of the options listed are correct.


theo

  • Hero Member
  • *****
  • Posts: 698
Reply #1 on: Aug 10, 2013
Answer has to be D, trust me!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Lungs: RUL = Right Upper Lobe, RML = Right Middle Lobe, RLL = Right Lower Lobe, LUL = Left Upper Lob Lungs: RUL = Right Upper Lobe, RML = Right Middle Lobe, RLL = Right Lower Lobe, LUL = Left Upper Lob
The vagina, sagittal section showing the location of the vagina and its relationship to the cervix, The vagina, sagittal section showing the location of the vagina and its relationship to the cervix,
Foley catheter with balloon in the bladder of a male patient. Foley catheter with balloon in the bladder of a male patient.
Reaction coordinate diagram for a simple enzyme catalyzed reaction Reaction coordinate diagram for a simple enzyme catalyzed reaction
How to calculate simple interest (Part 3) How to calculate simple interest (Part 3)
Simple Diffusion Simple Diffusion
Video: Spermatogenesis Animation

For a complete list of videos, visit our video library