The animal without red blood cells is
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Correct Answer: Option A
Detailed Explanation:
Earthworms lack red blood cells (RBCs); their respiratory pigment hemoglobin is dissolved directly in the plasma, not packed inside cells.
Snakes and peacocks are vertebrates that possess RBCs containing hemoglobin for oxygen transport.
Therefore, only earthworm is without red blood cells, making Option 1 the correct answer.
Question 1 of 1 Animal Physiology
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