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Digestion and Absorption

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Write a brief note on tongue.

Tongue : It is a freely movable muscular organ attached to the floor of the oral cavity. The tongue is covered with moist, pink tissue called mucosa. Tiny bumps called papillae give the tongue its rough texture. Thousands of taste buds cover the surfaces of the papillae. Taste buds are collections of nerve-like cells that connect to nerves running into the brain.

The tongue is is attached to the floor of the oral cavity by the frenum. Tongue is vital for chewing and swallowing food, as well as for speech.

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Name the fat soluble vitamins.

Vit A, D, E and  are fat soluble vitamins.
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What is the order of arrangement of teeth in each half of the upper and lower jaw ?

The order of arrangement of teeth in each half of the upper and lower jaw is I,C,PM,M.  I (incisors), C (cannine), PM (premolars), M (molars).
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What is the function of enamel in digestion?

The enamel helps in the mastication of food.
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What is Diphyodont ?

Diphyodont is the condition of having two set of teeth during the life of an organism. For example : humans are diphyodont as they have two set of teeth namely temporary milk or deciduous teeth which are replaced by permanent or adult teeth. 

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What are Sanguivorous animals ?

The animals which suck blood e.g. leech, vampire bat, female mosquito etc.
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