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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
What are heart burn and lactose intolerance ?

Heart burn : It is the condition when the cardiac sphincter fails to close completely and acidic gastric juice is squeezed into the oesophagus. The acid present in the gastric juice  irritates the cells in the oesophagus and the burning sensation in the chest can extend to the neck, throat. 

Lactose intolerance : It is the inability of adults and children to digest lactose, a sugar found in milk and to a lesser extent dairy products, causing side effects. 

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What is the function of enamel in digestion?

The enamel helps in the mastication of food.
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Name the fat soluble vitamins.

Vit A, D, E and  are fat soluble vitamins.
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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 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 are Sanguivorous animals ?

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