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Piyush365
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Asked: 2026-10-15T05:41:50+00:00 In:

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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The correct option is (iii) Presence of a cell membrane. Animal cells are eukaryotic, heterotrophic and characteristically bounded by a flexible cell membrane while completely lacking a rigid cellulose cell wall.

CBSE Class 9 Science Chapter 12 Patterns in Life Diversity and Classification Solutions

NCERT Class 9 Science Exploration Chapter 12 Question Answer

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    1. The correct option is (iii) Presence of a cell membrane. Sponges are classified under Kingdom Animalia because they are multicellular, heterotrophic eukaryotes whose cells possess a cell membrane but lack a rigid cell wall. Since plants and fungi possess distinctive cell walls made of cellulose or chitin, the absence of a cell wall and dependence on ingested organic nutrients confirm sponges are animals.

       

      For more NCERT Solutions of Class 9 Science Exploration Chapter 12 Patterns in Life Diversity and Classification Question Answer (2026-27)

      https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-12/

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