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  • In most molluscs,  Option: 1 blood flows in larger blood vessels but at tissue level vessels are absent<

In most molluscs,

 

Option: 1

blood flows in larger blood vessels but at tissue level vessels are absent

 


Option: 2

blood flows in blood sinuses or lacunae or open spaces 

 


Option: 3

The closed circulatory system is seen

 


Option: 4

Both a and c

 


Answers (1)

best_answer

 

 

 

Open circulatory system

  • In this system, the blood comes in direct contact with tissue cells.
  • Blood may or may not flow in larger blood vessels
  • When vessels are completely absent, blood flows in blood sinuses or lacunae or open spaces e.g arthropods
  • In most molluscs, blood flows in larger blood vessels but at tissue level vessels are absent

- 

 

In most molluscs, blood flows in larger blood vessels but at tissue level vessels are absent. Hence, the correct answer is option a.

Posted by

Kuldeep Maurya

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