Biology
In the cell of animals ,some micro-organisms and lower plants contain

Two centriole
One centriole
Three centriole
Four centriole

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Biology
In test tube baby

Development of ova take place in test tube without fertilization
Fertilization takes place in uterus while development takes place in test tube
Fertilization of ova takes place in test tube which development of embryo occur in uterus
Fertilization of ova and development takes place in test tube

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