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Q. How different are the swimming strategies in chondrichthyes and in osteichthyes? Why do sharks need to agitate their body to swim while bony fishes do not?
Bony fishes have a specialized organ called, swim bladder or a gas bladder, whose interior can be filled with gas liberated from gas glands. The swim bladder works the same as a hydrostatic organ since it varies the relative density of the body regulating buoyancy and the depth of the animal in water.
Chondrichthyes do not have swim bladders and thus they must continuously agitate their body to keep swimming to maintain their depth in water. As an additional swimming aid in chondrichthyes the liver is oily and big this feature helps to reduce their body density relative to water.
Define Advantages and Disadvantages of Swab Method? Advantages of Swab Method 1. Suitable for flexible, uneven and heavily contaminated surfaces. 2. Rapid, simple and ine
Im learning about difference cell structures in science. I was wondering if I might be able to get some information about the epithelial tissue, and the connective tissue. Thankyou
Autogenic and Allogenic Succession In many cases the living beings of an ecosystem, modify their environment considerably by their growth, death and decay. The changed condit
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An osteoclast is a type of bone cell that absorbs bone tissue by removing its mineralized matrix and breaking up the organic bone. This process is known as bone resorption
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If a cow develops a preference for eating white four o'clock flowers and ignoring pink and red four o'clock flowers, what type of selection is being demonstrated? Would the cow eve
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