(a)
Prostomium |
Peristomium |
Prostomium is a small fleshy lobe, which overhangs the mouth of an earthworm. It helps the organism push into the soil and is sensory in function. |
The first body segment in the earthworm is called the peristomium. It surrounds the mouth opening. |
(b)
Septal nephridium |
Pharyngeal nephridium |
They are present on both sides of inter-segmental septa behind the 15thsegment and they open into the intestine. |
They are present as three paired tufts in the fourth, fifth, and sixth segments. |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 5: Distinguish between the following (a) Prostomium and peristomium (b) Septal nephridium and pharyngea....
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