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Q. Fish identity card. How are fishes characterized according to examples of representing beings, skin, basic morphology, circulation, nitrogen waste, respiration, thermal control and types of reproduction?
Examples of representing beings: tuna, sardines, sharks, rays, salmons. Basic morphology: hydrodynamic body, fins cartilaginous skeleton in chondrichthyes, bony skeleton in osteichthyes. Skin: with scales in placoid and osteichthyes scales in chondrichthyes. Respiration: branchial, Circulation: incomplete, closed, heart with two chambers. Nitrogen waste: urea in chondrichthyes, ammonia in osteichthyes. Thermal control: heterothermic. Kind of reproduction: sexual, internal fecundation in chondrichthyes, external in osteichthyes.
A group working at the University of California, Berkeley has developed "nanothermometers," little nanoparticles that can be injected into cells to measure the temperature in vario
Q. Evolutionarily protochordates may be intermediate animals between invertebrates and vertebrates. Imagine a scientist is testing the hypothesis that vertebrates evolved from echi
Explain Rickets Rickets:- A condition in children due to vitamin D deficiency.
Q. Of which substance do elastic fibers of the connective tissue are made? What are few functions of these fibers? The elastic fibers are made of a protein called as elastin.
a) Explain somatic hybridisation? b) Describe the various steps involved in the process. Mention any two uses of somatic hybridisation
Chemoreceptors These are receptors included in perception of chemical stimuli. You will see that there are three kinds of Chemoreceptors among metazoans: i) Those concerne
Explain the Coliforms - Microbiological Study of Water? These are widely used indicators which belongs to the family Enterobacteriaceae and make up about 10% of the intestinal
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can you explain the digestive system ?
Acquired Aortic Stenosis : a) Rheumatic: In developing countries rheumatic aortic valve disease is more common than degenerative one. Mitral valve involvement is a common as
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