ICSE Class 10 The Circulatory System — Mock Test (2027)
Free online mock test for The Circulatory System (ICSE Class 10 Biology) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the The Circulatory System chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Rewrite and complete the second pair on a similar basis. (i) Veins: Superficial::Artery:______ (ii) RBC: Round :: WBC: _______ (iii) Artery: Oxygenated blood :: Vein : _______ (iv) Auricles: Receiving chambers :: Ventricles :______ (v) Lubb: Atrioventricular valves:: Dub :______
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2.What is hemophilia?
- A.A condition causing excessive blood clotting
- B.A hereditary disease where blood does not clot naturally
- C.A disorder of red blood cell shape
- D.An infection affecting white blood cells
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3.Which of the following correctly describes the structural differences between an artery and a vein as shown in the cross-section diagrams?
- A.Artery: thin wall, wide lumen, valves present; Vein: thick wall, narrow lumen, no valves
- B.Artery: thick muscular wall, narrow lumen, no valves; Vein: thin wall, wide lumen, valves present
- C.Artery: thin wall, narrow lumen, valves present; Vein: thick wall, wide lumen, no valves
- D.Artery: thick wall, wide lumen, valves present; Vein: thin wall, narrow lumen, no valves
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4.Describe the process by which carbon monoxide poisoning affects the body and the symptoms it causes. Which of the following best explains the primary mechanism and its effects?
- A.Carbon monoxide binds irreversibly with haemoglobin, forming carboxyhaemoglobin, which reduces oxygen transport and causes hypoxia.
- B.Carbon monoxide increases the oxygen-carrying capacity of haemoglobin, leading to oxygen overload in tissues.
- C.Carbon monoxide directly damages lung tissue, preventing oxygen absorption into the bloodstream.
- D.Carbon monoxide triggers excessive red blood cell production, thickening the blood and causing circulatory failure.
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5.The valve between the right atrium and right ventricle that ensures blood flows in one direction and prevents backflow is called:
- A.Mitral valve
- B.Bicuspid valve
- C.Semilunar valve
- D.Tricuspid valve
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