Monday, September 12, 2011

C) Characteristics of phylum Symphyla


1)     It includes garden centipede.
2)     It is terrestrial animal also found in damp places with humus.
3)     Body is divided into head and trunk.
4)     The head has a pair of antennae, one pair of mandibles and two pairs of maxillae.
5)     Trunk consist of 12 segments with one pair of legs in each segment.
6)     Spiracles are present in head only but eyes are absent in it.
7)     Genital apertures (reproductive pore)are situated mid ventrally between 4th pair of legs.
Examples:- Scutigerella, Scolopendrella.

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