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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.
Ventilation of Tracheal System The manner in which tracheae are ventilated varies with species of insects but movement of air is achieved in two ways: Diffusion
important of biology to man
If molecules diffuse down their concentration gradient and achieve equal concentration throughout a container or cell, does all movement stop? Explain your answer.
Q. Describe the Discovery of the Cell? Ans: The discovery that living organisms are composed of cells was made by an Englishman, Robert Hooke, in 1665. Hooke used the light mic
What do you understand by Exoskeleton. Supporting structures of skeleton not surrounded by the body. Endoskeletal elements are secreted by an underlying epidermis and one side
multiple choice question
What is gluconeogenesis There is accumulation of lactate, which is released into the blood and taken up by the liver where it is converted to glucose by the process called
Q. Where can RNA are found within cells? In the eukaryote cell nucleus the RNA can be found to dispersed in the nuclear fluid, along with the DNA, and as the main constituent o
OPEN HEART SURGERY : When patient is connected lo cardio pulmonary bypass for an operative procedure, it is considered to be open-heart operation. In a routine coronary artery b
Explain the Adsorption or Binding Ability? Some fibre components have the ability to bind (adsorb) substances in the gastrointestinal tract. Wheat bran, guar gum, mannan and is
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