BIOLOGY [2 Mark Question Answer]

A — Incisor:
Function -Its major function is biting and cutting of food.
B- Canine:
Function — Its major function is tearing of the food.
C — Pre-molar:
Function — Used for crushing and grinding of food.
D — Molar:
Function — Used for crushing and grinding of food.

Three enzymes found in pancreatic enzymes are :
1. Trypsin – act on proteins, proteoses, and peptones and changes them into polypeptides.
2. Lipase – acts on fats and changes them to fatty acids and glycerol.
3. Erepsin – acts on peptones and peptides and changes them to amino acids.

The liver does not secrete any enzyme yet it helps in digestion it secretes bile which helps in digestion of fats by breaking down fats into tiny droplets to provide a larger surface area for the enzymes to act. This process is called the emulsification of fats. Bile secreted by the liver is stored in the gall bladder. Bile provides an alkaline medium in the duodenum for the action of enzymes of the pancreatic juice

Small intestine
1. It is 7 meters long and 2.5 cm wide.
2. It has finger like projections called villi. 3. Food is completely digested here.
Large intestine
1. It is 1.5 – 1.8 m long and 6.5 m wide.
2. Villi are absent in large intestine.
3. Excess of water is absorbed here

The dentition in animals is based on the type of food they eat. So we have different kinds of teeth.
All teeth in the mouth are not alike as we eat both meat and plants. Due to different types of food eating habits teeth are of different types.