alleryBlood circulates through closed vessels in humans. This system is called
ANervous system of the body only
BOpen vascular system in insects only
CLymphatic system of the body only
DClosed vascular system
Answer & Solution
Correct answer: D. Closed vascular system
1. Section 7.2 / Fig 7.1 describes the circulation type.
2. Human blood always flows through blood vessels.
3. Such a system is called a closed vascular system.
4. Insects have an open system, in contrast.
_Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section 7.2_
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