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.
What is the main difference among plasma membrane and cell wall?
Do echinoderms exist in external or internal fecundation? Is there sex division between individuals?
Difference between functional testing and regression testing Functional Testing: This test is carrying out to see whether the program is working as per the specified
Write down the etiological agents of the malaria?
What are the two big classes into which the cells are categorized?
Difference between programming language and scripting language: Programming language required to be compiled first before running it. But scripting language can be interrupted in run time as it is a machine languag
Why doesn't a long enduring vaccine against common cold subsist yet?
Define cell theory in brief?
Define the term pneumatic bones? Answer: Birds encompass light weighted bones with internal spaces filled with air. Such bones are termed as pneumatic bones. This fe
What do you mean by the excitation threshold of a neuron? How this threshold is related to the “all-or-nothing” rule of neural transmission?
18,76,764
1958959 Asked
3,689
Active Tutors
1446119
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!