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Question
The difference between integumentary and pharyngeal nephridia relates to
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Solution
The correct option is A Exonephric nature
Integumentary nephridia lie attached to the inner side of the body wall in all segments except the first two. The pharyngeal nephridia are located only in the 4th, 5th and 6th segments. These two nephridia extract only waste matter from the capillaries with which they are richly supplied. It is only the integumentary nephridia which open directly to the exterior and so they are called as exonephric nephridia.
Therefore, the correct answer is option C.
Integumentary nephridia lie attached to the inner side of the body wall in all segments except the first two. The pharyngeal nephridia are located only in the 4th, 5th and 6th segments. These two nephridia extract only waste matter from the capillaries with which they are richly supplied. It is only the integumentary nephridia which open directly to the exterior and so they are called as exonephric nephridia.
Therefore, the correct answer is option C.
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