Multiple choice

Circulatory patterns are of two types. Which of the following have an open circulatory system?

a. Arthropods b. Annelids c. Molluscs d. Chordates

  1. Only a and b

  2. Only a and c

  3. Only a and d

  4. Only b and d

  5. Only b and c
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option as arthropods and molluscs have an open circulatory system. 

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