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Q. Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal control and types of reproduction?
Instance of representing beings: crocodiles, turtles, snakes, lizards, dinosaurs (extinct). Basic morphology: tetrapods, some with carapaces like turtles. Skin: impermeable keratinized, corneous plates known as scales. Respiration: pulmonary. Circulation: incomplete, closed, heart with three chambers and partial interventricular septation. Nitrogen waste: uric acid. Thermal control: heterothermic. Kind of reproduction: internal fecundation, sexual, shelled eggs with extraembryonic membranes.
are viruses cellular organisms
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