Which of the following statements about circulatory systems is true?

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Which of the following statements about circulatory systems is true? Answer: Hormones are transported in the blood

There are two types of circulatory systems: Open Circulatory System: Found in insects and some mollusks Blood is not always enclosed in vessels It bathes organs directly in an open cavity Closed Circulatory System (Humans): Blood circulates entirely within blood vessels It travels through arteries, veins, and capillaries Enables faster transport of oxygen, nutrients, and waste Maintains higher blood pressure and efficiency

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.