Swimming strategies in chondrichthyes and in osteichthyes
How distinct are the swimming strategies in chondrichthyes and in osteichthyes? Why do sharks require agitating their body to swim whereas bony fishes do not?
Expert
Bony fishes contain a specialized organ termed a gas bladder, or swim bladder, which’s interior, can be filled with gas released from gas glands. The swim bladder functions as a hydrostatic organ as it differ the relative density of the body regulating buoyancy and the depth of animal in water.
Chondrichthyes do not contain swim bladders and therefore they should continuously agitate their body to keep swimming and sustain their depth in water. As an extra swimming aid, in chondrichthyes the liver is oily and big; this feature aids to decrease their body density relative to water.
Write down the some representatives of the echinoderm phylum?
From zygote, the pluricellular organisms are made by serial mitosis. Would this formation be probable when each cell made up by mitosis had a similar life in relation to its precursor cells? How did evolution resolve that trouble?
Describe the typical shape of poriferans?
Write the functions of osseous tissue?
How reptiles and birds are different regarding the maintenance of the body temperature? Whether birds are rare in Polar Regions?
Where does most of the water resorbed subsequent to glomerular filtration go? Name the other substances resorbed by the nephron tubules?
What is Arden syntax?
Write down the relationship between enzyme cofactors and vitamins?
Write down the primary energy source for life on the earth.
Briefly describe how does zenograft differ from the isograft?
18,76,764
1956782 Asked
3,689
Active Tutors
1451485
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!