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Protozoans are a group of animal protists of more than 50,000 species and are found under almost all natural conditions where there is moisture. A protozoa11 is not as simple an organism as one would think it to be. It is so designed that even though it is a single cell, it still functions as a complete organism.
The slides that you will get for observation will all be permanent, stained whole mounts. While observing them you should sketch them as accurately as you can. You will note that as you sketch the specimens under observation you are more likely to look for details you would not see otherwise, and if you put those details in the right places in the sketch and in the right dimensions, you will recognize the specimen when you see it again.
Sometimes you may not be able to see all the details in a single specimen but by observing several specimens and drawing a composite picture from your observations you will be able to recognize the specimen in any given slide. Color coding also helps. You can devise a color coding system for yourself, for example blue for the nucleus, green for the chloroplast, etc.
Cellular Totipotency The innumerable cells which constitute the body of a higher plant or animal and containing identical genetic material can be traced to a single cell-the
Lakes - Lentic Ecosystems Most lakes occur in regions which have recently been subjected to geological changes; say within the past 20,000 years. However, a few lakes, such a
if i start in the superior mesenteric vain where do i have to go through to get to the left anterior circumflex humeral artery. by the way of the hepatic portal vein and the heart
Hydrops amnii (Hydramnios) Hydramnios is a rare condition. Excessive accumulation of amniotic fluid can be the result of foetal dysgenesis and agenesis. The increase of amniot
Morphological Nature of Endosperm The morphological nature of endosperm in angiosperms has been a subject of much discussion in evolution. The endosperm in gymnosperms is a g
How much physical activity is enough? Although it is difficult to prescribe the optimum amount of physical activity, it is important to note that any exercise programme has to
Cold Chain System Vaccines are sensitive to heat. On exposure to heat their potency is lost. Once a vaccine has lost its potency it cannot be regained, so it is important
Which of the below is a term for mononuclear, granulocytic white blood cells which produce immunoglobulins? a) Platelets b) Lymphocytes c) Erythrocytes (pron: eh-rith-reh
What is dengue? Dengue, or dengue fever, is an epidemic disease in some countries (for instance, in Brazil), and its most dangerous form is hemorrhagic dengue. It is caused by
What is Diatoms? Bacillariophyta are commonly known as diatoms because of their unique structure. These unicellular photosynthetic organisms are composed of two overlapping glas
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