Question

Choose the correct answer from the alternatives given.
In the sinuses of an open circulatory system,-blood is not segregated from:

• A. urine
• B. interstitial fluid
• C. digestive cavity
• D. cytoplasm

Answer 1

The correct option is B interstitial fluid

The open circulatory system is common to molluscs and arthropods. Open circulatory systems (evolved in crustaceans, insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood. So, the blood is not segregated from interstitial fluid.

So, the correct option is 'Interstitial fluid'.