Note: Dronacharya  (
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under Dronacharya by Dronacharya , added 8 years, 8 months ago


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Dronacharya

Q. Which hormone regulates 24 hour ( diurnal ) rhythm of our body ?_ ...
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1 answer under Note: Dronacharya 7 years, 6 months ago

A. Melatonin secreted by Pineal gland regulates diurnal rhythm of our body link
7 years, 6 months ago
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Dronacharya

Q. What would happen if we lack epiglottis ? ...
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1 answer under Note: Dronacharya 7 years, 6 months ago

A. Epiglottis is a cartilaginous flap which covers glottis during swallowing of food and prevent entry of food particles in wind-pipe. link
7 years, 6 months ago
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Dronacharya

Q. Why old glass windows are slightly thicker at bottom ? ...
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1 answer under Note: Dronacharya 7 years, 6 months ago

A. Glasses are amorphus solid that have tendency to flow like liquid, so it flows towards bottom and makes bottom part thicker link
7 years, 6 months ago
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Dronacharya

Q. What is the significance of lub and dub sound of heart ? ...
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1 answer under Note: Dronacharya 7 years, 6 months ago

A. Lub sound indicates closing of tricuspid valve while dub indicates closing of semilunar valve link
7 years, 6 months ago
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Dronacharya

Q. If a plant is suffering from disease, what is the procedure to grow healthy progeny from that plant ? ...
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1 answer under Note: Dronacharya 7 years, 6 months ago

A. If a plant is suffering from disease, we take its meristem and using in-vitro technique produce healthy progeny as meristem is always free from disease in plant link
7 years, 6 months ago
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