Enlist the main salient features of phylum Ctenophora.
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Answer:
Phylum Ctenophora Characteristics
They are free-swimming, marine, solitary, pelagic animals. ...
The body is transparent, gelatinous, pear-shaped, cylindrical, or flat or ribbon-shaped.
They have a biradially symmetrical body along an oral-aboral axis.
They have an external surface with comb-like 8 ciliary plates for locomotion.
Explanation:
Answer:
The general Characteristics of the Phylum Ctenophora are:
Biradially symmetrical, with an oral - aboral body axis .
Eight rows of ciliated "combs" or ctenes , controlled by an apical sense organ at the aboral pole.
Incomplete gut (mouth but no anus ).
No excretory, respiratory, or circulatory systems.
Diploblastic , with ectoderm and entoderm , and a cellular mesenchyme , which gives, rise to the musculature (some researchers feel that Ctenophores are triploblastic , with a true mesoderm ).
Adhesive structures called coloblasts (but no cnidoblasts or stinging cells as in Cnidaria ).
A diffuse nervous system consists of a nerve net, somewhat more specialized than that found in the Cnidaria .
A cydippid larval stage, monomorphic life cycle, never with a sessile or benthic stage.