1.

What is oligocheate  and polycheate by giving examples

Answer»

Oligochaeta is a subclass of animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms.  

Polychaetes (bristleworms) are marine annelids with parapodia bearing numerous setae in distinct fascicles. They are dioecious and multi-segmented. They have simple exit ducts from the gonads. Most of them live in soft or rocky environment on sea floor from intertidal to depth.

Difference between Polychaeta and Oligochaeta :

FeatureClass PolychaetaClass Oligochaeta
SetaeNumerousFew
SegmentationDistinct external and internal segmentationDistinct external and internal segmentation
ParapodiaPresent; bears bristlesAbsent
SexualityDioeciousMostly monoecious
Special featureTrochophore larva presentNo larval stage
ExamplesNeries, Sabella, AphroditeTubifex, Pheretima, Lumbricus


Discussion

No Comment Found

Related InterviewSolutions