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Green leaves make food for plants
Heat some alcohol in a jar over boiling water unless it boils. Break various green leaves from a geranium or other plant which has been in the sun for various hours, and place them in the boiling alcohol unless the chlorophyll has been removed. Quickly remove the leaves from the alcohol and put them in a basin of hot water. Remove a leaf from the water and spread it out on a piece of glass or tile. Cover the leaf with tincture of iodine and leave for various minutes. The deep blue colour is the test for starch which has been made by the leaf in the sunlight.
Principles Governing Cleavage a) The nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing cells, e.g., in isolecithal
Which of the following pairs of functional groups CANNOT react with each other by a dehydration reaction? Select one: a. Carboxyl;Hydroxyl b. Carboxyl;Sulfhydryl c. Pho
Define Instrument for measurement of absorbed radiation-Colorimeter? The simplest types of, photometric instruments are designed for measurements in the visible region of spect
How cells are studied We learnt about the evolution of the cell and a historical account of the growth of cell biology. In this section, you will study about the various tools
The dangers of working in labs with animals will be minimised if the following precautions are taken: 1. Wash all dissection instruments in disinfectant after use. 2. Never
Height of Plants - Quantitative Characters The height of a plant is a very good indicator of their general performance and therefore, can be employed as a criterion of the suc
Q. Is the embryonic development in birds indirect or direct? The embryonic development is direct there is no larval stage. Q. What are the predominating chemical compounds
What is a biome? A biome is a prevailing ecosystem constituted by same biotic and abiotic factors present in one or more regions of the planet.
Q. What is ST Heart Rate Index? To calculate the index, the maximum ST depression is divided by the Delta heart rate (difference between the resting and maximum heart rate). As
Name two ways in which the chances of hypothermia can be reduced during outdoor activities. Eating well before going out and wearing warm, wind-proof clothing can reduces the c
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