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Choose the odd one out from each group and give reason.
 
Stomach, liver, pancreas, salivary gland
 
 Correct reason for the odd one:
Answer variants:
Stomach is responsible for digestion.
Stomach
Gall bladder
Gall bladder secrets pancreatic juice.
Salivary glands
Liver
Salivary gland is a body organ secretes saliva.
Liver is a body part producing bile.