Organ Systems Integration in Animals · NCERT Biology

Which two systems are most directly involved in the transport of oxygen to body tissues?

  1. Digestive and excretory systems
  2. Respiratory and circulatory systems
  3. Nervous and endocrine systems
  4. Muscular and skeletal systems
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Correct answer: Respiratory and circulatory systems

The respiratory system takes in oxygen, while the circulatory system transports it to tissues. Their integration ensures efficient oxygen delivery.

Difficulty: Medium Question 2 of 20

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