Here are 10 One-Word Answer Type Questions from the topic Circulatory System (from your provided PDF), with answers and explanations after each question as requested:
One-Word Answer Type Questions
Topic: Circulatory System
1. Question: What is the organ that pumps blood in the human body?
• Answer: Heart
• Explanation: The heart is a muscular organ that pumps blood to all parts of the body.
2. Question: What is the fluid that circulates in the body?
• Answer: Blood
• Explanation: Blood transports oxygen, nutrients, and waste materials in the body.
3. Question: What are the blood vessels that carry blood away from the heart?
• Answer: Arteries
• Explanation: Arteries carry oxygen-rich blood from the heart to various body parts.
4. Question: What are the blood vessels that carry blood towards the heart?
• Answer: Veins
• Explanation: Veins carry carbon dioxide-rich blood back to the heart.
5. Question: What is the red pigment present in red blood cells?
• Answer: Haemoglobin
• Explanation: Haemoglobin carries oxygen from the lungs to the body cells.
6. Question: What is the liquid part of blood called?
• Answer: Plasma
• Explanation: Plasma is the fluid part of blood that carries nutrients and waste materials.
7. Question: What are the tiny blood vessels that connect arteries and veins?
• Answer: Capillaries
• Explanation: Capillaries help in the exchange of substances between blood and body cells.
8. Question: How many chambers are there in the human heart?
• Answer: Four
• Explanation: The human heart has four chambers — two atria and two ventricles.
9. Question: What is the instrument used to hear the heartbeat?
• Answer: Stethoscope
• Explanation: A stethoscope is used by doctors to listen to heartbeats.
10. Question: What is the organ that supplies oxygen to blood?
• Answer: Lungs
• Explanation: Lungs supply oxygen to the blood during respiration.
If you want, I can now prepare the next set from the sub-topic Excretion in Animals in the same one-word format.
Shall I proceed?
