Multiple choice

Which of the following organisms possess parenchymal circulatory system?

  1. Roundworms (ascaris)

  2. Flatworms (platyhelminthes)

  3. Sponges (porifers)

  4. Spiders (arthropods)

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Flatworms transport digested food through parenchyma. They exhibit parenchymal circulation.