Question 2 — Sponges represent one of the - Questions at the end of the chapter - Chapter 12 - Patterns in Life: Diversity and Classification

Last updated at July 3, 2026 by

Question 2
Sponges represent one of the simplest animal body plans. Their bodies lack true tissues and organs. Which feature of sponge cells supports its classification under the animal kingdom? (i) Absence of mitochondria (ii) Ability to photosynthesise (iii) Presence of a cell membrane (iv) Presence of a cell wall
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Answer: (iii) Presence of a cell membrane

  • Animal cells have only a cell membrane and no cell wall ; sponge cells share this feature.
  • Photosynthesis and a cell wall would suggest plants; mitochondria are present in nearly all eukaryotes, so those options do not support animal classification.
Sponge Cells Animal cells have no cell wall They have only a cell membrane So the cell membrane supports animal - (iii)
Back to: 12.6.5 Kingdom Animalia
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