Multiple choice

Which of the following phylums possess open circulatory system?

  1. Mollusca
  2. Aschelminthes
  3. Annelida
  4. Arthropoda
  5. Chordata

  1. 1 and 4

  2. 1 and 5

  3. 2 and 4

  4. 2, 3 and 4

  5. 3, 4 and 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mollusca – Circulatory system is open and lacunar type. Arthropoda – Circulatory system is open with dorsal heart.

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