1. Tardigrade
  2. Question
  3. Biology
  4. Which of the following statement is correct about the circulatory system of Annelida?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Which of the following statement is correct about the circulatory system of Annelida?

NTA AbhyasNTA Abhyas 2022

Solution:

In the circulatory system of mollusca, the respiratory pigment is copper-containing haemocyanin dissolved in plasma. In Annelida, the respiratory pigment is haemoglobin dissolved in plasma. Unlike most mollusca, annelids have a closed circulatory system. In a closed circulatory system, blood is always contained within blood vessels. Annelids do not have a central, well-developed heart, and usually, the muscular dorsal blood vessel functions to pump blood through the circulatory system.