[Campbell Biology P.765] Based on the table, which of the following is a defining characteri... | Practice Question

Based on the table, which of the following is a defining characteristic of Porifera sponges ?

  • A: Presence of stinging structures (nematocysts).
  • B: Lack of true tissues and organs.
  • C: Bilaterally symmetrical larvae and five-part body organization as adults.
  • D: Body wall and internal organs are segmented.

Explanation

The table explicitly states that Porifera sponges 'Lack tissues'. This absence of true tissues and organs is a fundamental defining characteristic that sets them apart from most other animal phyla.