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Question

Among protostomes, cleavage of the fertilized egg is

A
Delayed while the egg continues to mature
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B
Determinate cells separated after a few divisions develop into only partial embryos
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C
Indeterminate, cells separated after a few divisions develop into complete embryos
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D
Diploblastic
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Solution

The correct option is C Determinate cells separated after a few divisions develop into only partial embryos
Cleavage of the fertilised egg in protostomes is determinate i.e. if the egg is allowed to divide a few times and the cells are then separated, each cell develops into only a partial embryo. Cleavage in deuterostomes is, however, indeterminate.
Thus, the correct answer is option B.

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