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Which of the following statements is/are correct?
Option: 1
Sponges are saprophytic.
Option: 2
Sponges are filter feeders.
Option: 3
Both A and B
Option: 4
None of the above
Answers (1)
Physiology of Porifera -
Digestion in Porifera
- Sponges lack a digestive system.
- The nutrition is performed by choanocytes that trap the phytoplanktons and digest them through phagocytosis.
- Hence, digestion is intracellular.
- The amoebocytes transfer food from choanocytes to other cells.
- The pinacocytes digest larger plankton.
Sponges feed on phytoplanktons and zooplanktons. These are filter feeders
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