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Question
Photoreceptors are unicellular in earthworm and are most abundant in the skin of
Photoreceptors are unicellular in earthworm and are most abundant in the skin of
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Solution
The correct option is B Both (a) & (b)
Protostomium
Prostomium is present in front of the earthworm’s mouth. It hangs like an extension over the dorsal side of the mouth. Photoreceptors are generally found in the prostomium.
Peristomium
Peristomium is the first body segment in an earthworm’s body in which the mouth is located. It is also known as the buccal segment. Photoreceptors are also present in peristomium.
Protostomium
Prostomium is present in front of the earthworm’s mouth. It hangs like an extension over the dorsal side of the mouth. Photoreceptors are generally found in the prostomium.
Peristomium
Peristomium is the first body segment in an earthworm’s body in which the mouth is located. It is also known as the buccal segment. Photoreceptors are also present in peristomium.
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