NEET Zoology Non-Chordates MCQ Question
Which combination of statements about the characteristics of Porifera and Echinodermata is correct?
Porifera are primarily asymmetrical and have a cellular level of organization; Echinodermata are radially symmetrical as adults and have an endoskeleton.
Porifera possess a complete digestive system; Echinodermata are all freshwater species.
Porifera have distinct sexes and are dioecious; Echinodermata exhibit bilateral symmetry in adults.
Porifera use choanocytes for intracellular digestion; Echinodermata have a skeletal structure made of cartilage.
Correct Answer
Detailed Explanation
Porifera are indeed asymmetrical and exhibit a cellular level of organization, while Echinodermata are radially symmetrical in their adult form and possess an endoskeleton made of calcareous ossicles.
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