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Q: Anterior end of an earthworm consists of the mouth and the ........
  • A. Clitellum
  • B. Metamere
  • C. Prostomium
  • D. Setae
Correct Answer: Option C - Anterior end of an earthworm consists of the mouth and the Prostomium. An earthworm is terrestrial invertebrate that belongs to order Opisthopora. Earthworm belongs to Phylum Annelida. They exhibit a tube within a tube body plan are externally segmented with corresponding internal segmentation, usually have setae on all segments. They occur worldwide where soil, water and temperature allow. The first segment of the Earthworm, the peristomium contains the mouth. Earthworm use the Peristomium to see their environment as they have no ears, nose or hands.
C. Anterior end of an earthworm consists of the mouth and the Prostomium. An earthworm is terrestrial invertebrate that belongs to order Opisthopora. Earthworm belongs to Phylum Annelida. They exhibit a tube within a tube body plan are externally segmented with corresponding internal segmentation, usually have setae on all segments. They occur worldwide where soil, water and temperature allow. The first segment of the Earthworm, the peristomium contains the mouth. Earthworm use the Peristomium to see their environment as they have no ears, nose or hands.

Explanations:

Anterior end of an earthworm consists of the mouth and the Prostomium. An earthworm is terrestrial invertebrate that belongs to order Opisthopora. Earthworm belongs to Phylum Annelida. They exhibit a tube within a tube body plan are externally segmented with corresponding internal segmentation, usually have setae on all segments. They occur worldwide where soil, water and temperature allow. The first segment of the Earthworm, the peristomium contains the mouth. Earthworm use the Peristomium to see their environment as they have no ears, nose or hands.