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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.
Photosynthesis is a process used by plants and other organisms to change the light energy captured from the sun into chemical energy which can be beneficial to fuel the organism's
An organism having the genotype AaBbCcDdEe is self-fertilized. What are the proportions of gametes that are expected to carry only dominant alleles?
Q. What are astigmatism and presbyopia? Presbyopia is the visual impairment in which there is loss of the cililary muscle strength thus reducing the ability of the crystalline
1. Discuss how nursing has changed over the last two (2) decades. 2. Review and summarise the philosophy of your enrolled nurse course and its relevance to your clinical practic
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