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Platyhelminthes, Aschelminthes, Annelida — practice questions

3 questions in the bank on this idea. Below are 3 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L2 · understanding

    Which combination correctly distinguishes annelids from flatworms?

    • A. Annelids are segmented and coelomate, while flatworms are unsegmented and acoelomate
    • B. Annelids are diploblastic, while flatworms are triploblastic
    • C. Annelids are pseudocoelomate, while flatworms are coelomate
    • D. Annelids lack organ systems, while flatworms possess them

  2. Question 2 · difficulty L3 · understanding

    Match List-I with List-II. List-I List-II (a) Metamerism (i) Coelenterata (b) Canal system (ii) Ctenophora (c) Comb plates (iii) Annelida (d) Cnidoblasts (iv) Porifera Choose the correct answer from the options given below.

    • A. (a) (b) (c) (d) (iv) (i) (ii) (iii)
    • B. (a) (b) (c) (d) (iv) (iii) (i) (ii)
    • C. (a) (b) (c) (d) (iii) (iv) (i) (ii)
    • D. (a) (b) (c) (d) (iii) (iv) (ii) (i)

  3. Question 3 · difficulty L4 · analysis

    Animal X is dorsoventrally flattened and lacks a body cavity. Animal Y is cylindrical, unsegmented and has a pseudocoelom. Animal Z is segmented and coelomate. Which sequence correctly identifies their phyla?

    • A. Platyhelminthes, Aschelminthes, Annelida
    • B. Aschelminthes, Platyhelminthes, Annelida
    • C. Platyhelminthes, Annelida, Aschelminthes
    • D. Annelida, Aschelminthes, Platyhelminthes

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