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Making leaf collections
Collect young leaves of as many varieties of plants as possible. Place various layers of news- paper or blotting paper on a firm, smooth board. Next organize the leaves so they do not touch. Cover the leaves with other layers of newspaper or blotting paper. Place another board on top and then place various heavy stones or weights on the board. Keep the leaves in the press until they are thoroughly dried. When the leaves are removed from the press they may be neatly in order on note book pages and secured either with Scotch tape or small sections of gummed labels. The name of the leaf and any other exciting material can be recorded on the note book page.
Sericulture : This is related to silk worms. Sericulture is also known as silk farming. Sericulture is rearing of silkworms for the production of raw silk. There are many types of
Why is an S strain of bacteria able to cause disease in mammals but a R strain is not? The slippery capsule stops the cells of the defence system from capturing and destroying
Define drug-nutrient interaction and drug- drug interactions? Generally, administering oral medication along with the food or at a mealtime is a convenient manner of drug dosin
What is Phylum Porifera in Classification of the Animal King? Sponges are the simplest form of animals. Their bodies are not organized in any specific pattern other than masses
Explain Antigens ? A blood type, or group, is based upon the presence or absence of certain substances called antigens on the surface of the red blood cells. Antigens are subs
What are some examples of organs and tissues where mitosis is more frequent, less frequent or practically absent? Generally in vertebrates mitosis is more frequent in a tissue
Acrylamide gel is a polymer gel used for electrophoresis of DNA or protein to measure their sizes (in the daltons for proteins, or in base pairs for DNA). See "Gel electrophoresis
Question : (a) Briefly describe what are non degradable pollutants? (b) What do you meant by ichthyosarcotoxic fishes and give two examples of ichthyosarcotoxic fish poiso
What do you mean by Acute Pericarditis? Ans. Acute pericarditis is defined as acute inflammation of the pericardium and is clinically characterized by chest pain, fever, t
A field trip to observe flowers:- Plan a field trip to view flowers in bloom. If no interesting wildflowers can be found growing near the school, the trip can be planned to a p
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