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Kingdom Animalia — Bio Zoology STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyKingdom Animalia3 Marks
Question
Distinguish between ostia and osculum.
✓

Answer

Ostia:
  • The minute pores lining the body wall of sponges are called ostia.
  • Water enters through ostia.
Osculum:
  • The large opening in sponges is called osculum.
  • Water goes out through osculum.

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