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A tumbler garden
Grow several kinds of seeds in 'tumbler gardens'. Every pupil might grow a tumbler garden of his own and keep a day by day pictorial record of the progress of the seedlings.
To make a tumbler garden cut a rectangular piece of blotter and fall it inside a drinking glass. Fill the centre of the glass with peat moss, cotton, excelsior, sawdust or some same material. Push a few seeds among the outside of the glass and the blotter. Keep a little water in the bottom of the glass.
All the efforts that go into the preparation of instruments are futile if the sterilization process itself is not successful. There is no way of seeing that instruments are sterile
PR E FORMATION THEORY - Proposed by Marcello Malpighi. Studied chick egg and proposed his work in "De ova-incubato". According this different part of embryo previousl
Define some Precautions for Estimation of the Amount of Bacteria? 1. Dilution should be made carefully. 2. Use fresh sterile pipette for making each dilution. 3. Aseptic
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Properties of pyridoxine a) It forms white, odourless crystals. b) The compound is readily soluble in water. c) When a neutral or alkaline solution of pyridoxine is
Dose-response extrapolation In order to be compared to human exposure levels, the animal data need to be extrapolated to doses much lower than those studied. This extrapolation
Prophylaxis Medical Letter consultants generally do not prescribe antibiotic prophylaxis for travelers' diarrhea, but rather instruct thec patient to begin self-treatment when
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Q. How to Use a Key? The use of a key is analogous to travelling a high way, that forks repeatedly, each fork having roadside directions. If a traveller follows the proper dire
Why do most of plants present opposite phyllotaxis? The Phyllotaxis is the way that leaves are arranged on shoots. Most of plants have opposite phyllotaxis that (alternating in
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