NEET Biology question
Consider the following statements I. Flame cells are excretory structures in flatworms. II. Green glands are excretory organs in annelids. III. Columns of Bertini are the conical projections of renal pelvis into renal medulla between the renal pyramids.
Answer: (B)
Solution
Statement I is correct because flame cells (protonephridia) are the excretory structures of flatworms such as Planaria; statement II is incorrect because green glands (antennal glands) are excretory organs of crustaceans, not annelids, which use nephridia instead;
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