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Why does the leaf give blue-black colour only in patches?
The variegated leaf contains chlorophyll only in patches and hence the photosynthetic activity is restricted to those patches. Thus, only those areas give blue-black colou..
Work and Energy
Introduction - For a layman the term 'work' implies any activity resulting in muscular or mental exertio..
Exhaustible Natural Resource
The exhaustible natural resources are limited in nature and are liable to be degraded in quantity and quality by human activities. Examples are forests, soil, wild animals, minerals, fossil fuels et..
Cowper's Glands
They are a pair of small ovoid glands that secrete lubricating fluid into the urethra just before it enters the penis. The secretions of these glands make the sluggish sperms more active and help in the passage of sperms through the duct system and then in the ejaculati..
Absorption
Taking food in the soluble forms into the tissues. This involves the absorption of food in the soluble form from the region of digestion into the tissues or into where it has to be utilised or into the blood stream which transports it to the different tissues. This takes place through the cell mem..
The Effects of Oxidation Reactions In Every Day Life
Many metals are chemically active elements and get easily affected by substances like moisture, air, acids, etc. One must have observed iron articles that are shiny when new, but get coated with a reddish brown powder when left for some tim..
Question 1
Question: How are wastes formed in the body? Answer: Wastes are formed in the body as by-products of the metabolic activities in the bod..
Photosynthesis - Reactants
During photosynthesis, carbon dioxide is converted into carbohydrates and this is called fixing of carbon dioxide. Many processes like respiration, combustion, volcanic activity, etc. release carbon dioxide into the atmospher..
Carbon Dioxide
During photosynthesis, carbon dioxide is converted into carbohydrates and this is called fixing of carbon dioxide. Many processes like respiration, combustion, volcanic activity, etc. release carbon dioxide into the atmosphere. This carbon dioxide of the atmosphere is used by the terrest..
Nutrition - Test Questions
Question 1 - Question: What is nutrition? Answer: Nutrition is the process by which an organism obtains food which is used to provide energy and materials for its life sustaining activities..
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