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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.
Q. Explain working of Cerebral Cortex? Cerebral Cortex/Cerebrum: The cerebrum or the cortex is the large part of the brain and is associated with the cognitive functions of the
TESTE S (TESTICLES) - 2 in number (Diarchic). Pinkish in colour. Oval shaped. 4-5 cms long, 2.5 cm wide and 3 cm thick. Mesodermal. In embryonic stage attached to kid
What is the relationship between the estrogen level and the LH level in the menstrual cycle? What is the function of LH in the menstrual cycle and when does its blood concentration
Reaction - Processes in Succession This is the most important stage in succession. The mechanism of modification of environment, through the influence of living organisms on i
Diarrhoeas disease: Diarrhoeas disease rank among th most leading causes of children's death in developing countries. We shall discuss two main problems in this section i.e.
How do you explain in the absence of aldehyde group in the pentaacetate of D-glucose? Ans) when you react glucose with acetic anhydrate it forms pentaacetate with 5 OH grops it tel
Q. How are gametes formed in the pteridophyte life cycle, by mitosis or meiosis? What is the type of meiosis that occurs in pteridophytes? In pteridophytes gametes are made by
EA R It is phono receptor as respond to sound waves. It is teloreceptor as receive stimuli from far distance. It is stato-acousting organ as concerned with b
before stem cuttings are planted the cut end of the stem is often dipped in a hormone powder .what is the point of this?
Chlorophyll Chlorophyll is the porphyrin most widely used as a natural colourant. Its widespread occurrence in photosynthetic tissue and its breakdown character have prompted
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