10th Standard Syllabus & Materials
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TN 10th English Prose - 4 - The Attic Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Poem - 3 - I am Every Woman Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Prose - 3 - Empowered Women Navigating The World Important Questions And Answers Study Material - QB365 Set A
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Published on: 12/06/2021
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Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Differentiate between systemic circulation and pulmonary circulation.
2.
How are arteries and veins structurally different from one another?
3.
What is the importance of valves in the heart?
4.
Why is the circulation in man referred to as double circulation?
5.
What would happen to the leaves of a plant that transpires more water than its absorption in the roots?
1.
| Systemic circulation | Pulmonary circulation |
| Systemic circulation moves blood between the heart and the rest of the body. | Pulmonary circulation moves blood between the heart and the lungs. |
| It sends oxygenated blood out to cells and returns deoxygenated blood to the heart. | It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. |
2.
(i) Arteries are thick and elastic vessels that carry blood away from the heart.
(ii) Veins are thin and non-elastic vessels that transport blood to the heart.
3.
Valves are the muscular flaps that regulate the flow of blood in a single direction and prevent back flow of blood.
4.
(i) When the blood circulates twice through the heart in one complete cycle it is called double circulation.
(ii) In double circulation oxygenated blood does not mix with deoxygenated blood.
5.
(i) Transpiration often results in water deficit which causes injury to the plants by desiccation.
(ii) Excessive rate of transpiration leads to stunted growth of plants.
10th Standard Syllabus & Materials
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
