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Yogita Ingle 6 years, 5 months ago
Small lines present on a leaf are called its vein. These gives support and transport water and mineral through the leaf.
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The following steps are performed to test the presence of starch in a food item.
- Take small quantity of the food item to be tested on a porcelain tile.
- Dilute it with two drops of water.
- Put 2-3 drops of iodine solution on it.
- Observe the colour of the food item.
- Change of colour in the food item into blue-black indicates the presence of starch in the food item.
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Yogita Ingle 6 years, 5 months ago
Sedimentation : It is a process where the heavier components which are present in a solution, settle down at the bottom of the container.
For example : When the mixture of sand and water is taken and it is allowed to undisturbed the solution for some time, we observed that the sand settles at the bottom of the container.
Decantation : It is a process of separating the two immiscible liquid or a process of separating the liquid portion from a solution when the heavier components present in the solution are settles at the bottom as a sediments. Or we can say that the process of transferring the liquid from one to another without disturbing them, it is settle down at the bottom of the container.
For example : When a mixture of sand and water is allowed to stand, we observed that the sand settles at the bottom of a container since it is heavier and water is present in the upper portion of the container since it is lighter than the sand. This can be separated simply by pouring in a different container without using any other separating device.
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Yogita Ingle 6 years, 5 months ago
Ginning: The cotton picked up from the plants has seeds in it. The process of removing cotton seeds from pods is called ginning. Ginning was traditionally done by hand. Now-a-days, machines are used in ginning.
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Meghna Thapar 6 years ago
On the basis of their size and the type of stem, most of the plants are classified into three types – herbs, shrubs and trees.
- Herbs are non-woody plants with green and tender stem. They are small in size and have a short life-span. They do not have branches and may live for one or two seasons. Examples – tomato, radish, carrot, wheat, paddy, cabbage, ginger, turnip, etc.
- Shrubs are woody plants with a hard stem. They are medium sized and tend to branch near the ground level. Examples – rose, jasmine, tulsi, lemon and croton.
- Trees have thick woody stem. Their branches appear higher up on the stem much above the ground. They are big in size and their life span is very large. Examples – coconut, teak, palm, sandalwood, neem, mango, etc.
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Sia ? 6 years, 5 months ago
Hard material :Those material which cannot be easily compressed, cut, bent or scratched, are called hard material.Cotton and sponge are hard material.
Soft material :Those material which can be easily compressed, cut, bent or scratched, are called soft material. Iron and coal are hard materials.
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This causes the plant to have elongated cells on the farthest side from the light.
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Posted by Satyabrata Patra 6 years, 5 months ago
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Meghna Thapar 6 years ago
We should remember the 3 R’s to save the environment from the harmful effects of excessive use of plastics which means – Reduce, Reuse and Recycle.We should reuse the plastic containers which come with jams, pickles, oil and other packed foods for storing salt, sugar, tea-leaves, etc.

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Sia ? 6 years, 5 months ago
Solution is a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
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