Class 11 · Animal Kingdom

Open Circulatory System in Animals — NEET Biology

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📖 NCERT Source

Open type in which the blood is pumped out of the heart and the cells and tissues are directly bathed in it and

NCERT Biology · Class 11 · Chapter 4 · Paragraph 5
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Assertion (A): Animals have different types of circulatory systems for transport of materials. Reason (R): In open circulatory system, blood is circulated through a series of vessels, while in closed type, blood directly bathes the cells and tissues.

📖 Solution & NCERT Explanation
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Correct answer: C If assertion is true but reason is false.

NCERT confirms different circulatory system types exist (Assertion true). However, NCERT states “open type in which the blood is pumped out of the heart and the cells and tissues are directly bathed in it and closed type in which the blood is circulated through a series of vessels.” The Reason swaps the characteristics - open type has blood bathing tissues directly, closed type uses vessels.

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What does NCERT say about Open type which blood?
Open type in which the blood is pumped out of the heart and the cells and tissues are directly bathed in it and
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Animal Kingdom, Class 11 NCERT Biology.

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