Question

Main difference between the septal and pharyngeal nephridia is of:
(a) nephrostome
(b) straight lobes
(c) function
(d) reservoir

Answer 1

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Answer 2

Answer- (a) nephrostome  

Nephrostome are not found in pharyngeal nephridia. The nephrostome is the funnel-like component of a metanephridium. It is always oriented towards the coelom. The nephrostome is covered from the inside with cilia, which push the water, metabolic wastes, unnecessary hormones and other substances into the metanephridium.