In Pheretima septa are absent between which segments?
A
3 / 4 and 9 / 10
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B
4 / 5 and 8 / 9
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C
5 / 6 and 7 / 8
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D
7 / 8 and 6 / 7
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Solution
The correct option is C 3 / 4 and 9 / 10 Pheretima posthuma is the earthworm and belongs to the class of annelids. These are also known as the segmented animals. The body of an earthworm is divided internally and externally into well-defined segments with the help of membranous partitions known as septa. Septa are absent in the first four segments and between 9/10 segments.