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Choose the odd one out from each group and give reason.
 
Liver, salivary gland, starch, gall bladder
 
Correct reason for the odd one:
Answer variants:
Starch
Starch is a complex sugar.
Gall bladder
Salivary gland is a body organ
Liver
Liver is a body part.
Salivary glands
Gall bladder is a simple sugar.