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Take the prepared slide of Euglena and focus it first under low power and next under the high power of tlie microscope. Observe tlie following characteristics:
i) Euglena is an oval spindle shaped organism with a blunt anterior end and a pointed posterior end.
ii) Body is externally covered with a pellicle.
iii) Underneath the pellic le the cytoplasm is clearly differentiated into an outer ectoplasm and an inner endoplasm.
iv) Anterior end of the body bears an opening cytostome, which continues illternally as a tubular cytopharynx. The cytopllarynx leads into a large splier ical reservoir.
v) From the base of the reservoir a single whip-like flagellum arises.
vi) A single large spherical nucleus is located towards the posterior region of the body.
Suppose many of the atoms of nitrogen in a double-stranded molecule of DNA, of isotope N-14, were replaced with the isotope N-15. What afffect would this have? a) The nitrogeneo
Q. Show the types of oesophagitis conditions? The two types of oesophagitis conditions: 1. Acute Oesophagitis - It is characterized by substantial pain on swallowing. It is
Air Pollution - Environmental Pollution The threat due to air pollution became apparent only when some severe episodes caused human casualty in USA, Britain (London) and Japan
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What is speciation? The Speciation is the process by which different species emerge from a common ancestor species. The Speciation generally begins when populations of the same
Leaf silhouettes Place a leaf on a sheet of white paper and hold it securely with thumb or finger. Press a piece of natural or artificial sponge next to an ink pad. With short,
PO L YSACCHARIDES Polysaccharides are complex carbohydrates. Polysaccharides are also called glycans. These are insoluble in water. Polysaccharides are not swee
what are lipids? how ther absorption takes place in human bodies?
Define Vitamins and Minerals needs in Nutrient Requirement and Dietary Management Although the exact requirements are not known, it is generally recommended to give plenty of f
Define Placental Transfer of Nutrients? The placenta is n transitory structure developing during pregnancy and lies implanted on the uterine wall. It is connected with the foet
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