Assertion and Reason questions for class 10 Biology chapter-1Transportation- Here, we will share Assertion and Reason questions for class 10 Biology chapter-1Transportation. if you are searching for Assertion and Reason type questions for class 10 Biology, then you are in the right place. queryexpress provides the most important assertion and reason type questions answers for class 10 Biology.
Assertion and Reason questions for class 10 Biology chapter-1Transportation
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Assertion and Reason Class 10 Biology chapter-1Transportation
1.Assertion: Blood consists of a fluid medium called plasma in which cells are suspended.
Reason: Plasma transports food, carbon dioxide, and nitrogenous wastes in dissolved form.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
2.Assertion: The heart has different chambers to prevent oxygen-rich blood from mixing with blood containing carbon dioxide.
Reason: This separation ensures efficient oxygen supply to the body.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
3.Assertion: Fish have a two-chambered heart.
Reason: This adaptation reflects their lower energy needs and efficient single circulation system.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
4.Assertion: Arteries have thick, elastic walls.
Reason: This is to withstand the high pressure of blood pumped from the heart.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
5.Assertion: Veins have valves that prevent backflow of blood.
Reason: Blood pressure in veins is lower compared to arteries.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
6. Assertion: Capillaries are the smallest blood vessels where exchange of materials with cells occurs.
Reason: Their thin walls allow for easy diffusion of substances.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
7. Assertion: Platelets help in clotting of blood.
Reason: They release chemicals that cause blood vessels to constrict.
Answer-(c) Assertion is true, but reason is false.
8. Assertion: Lymph is a fluid that drains excess fluid from tissues back into the blood.
Reason: It contains a high concentration of red blood cells.
Answer-(c) Assertion is true, but reason is false.
9. Assertion: Xylem transports water and minerals in plants.
Reason: This tissue is made up of sieve tubes.
Answer-(c) Assertion is true, but reason is false.
10. Assertion: Transpiration creates a suction force that pulls water up from roots to leaves in plants.
Reason: This process relies on the active transport of water molecules.
Answer-(b) Both assertion and reason are true, but reason is not the correct explanation of assertion.
11. Assertion: Phloem transports sugars and other products of photosynthesis in plants.
Reason: This transport occurs in both upward and downward directions.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
12. Assertion: The movement of materials in phloem tissue is driven by osmotic pressure.
Reason: ATP provides energy for loading materials into the phloem.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
13. Assertion: Leaves are the primary organs for photosynthesis in plants.
Reason: Stems store excess sugars produced during photosynthesis.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
14. Assertion: Double circulation in animals ensures that oxygenated and deoxygenated blood mix in the heart.
Reason: This mixing optimizes oxygen delivery to tissues.
Answer-(c) Assertion is true, but reason is false.
15. Assertion: Birds and mammals have a four-chambered heart.
Reason: This adaptation supports their high energy needs and constant body temperature.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
16.Assertion: Carbon dioxide is removed from blood by the kidneys in the circulatory system.
Reason: The kidneys filter metabolic waste products from blood.
Answer-(d) Assertion is false, but reason is true.
17. Assertion: Oxygen-rich blood is received by the left ventricle of the heart.
Reason: This chamber pumps blood to the lungs for oxygenation.
Answer-(d) Assertion is false, but reason is true.
18. Assertion: Valves in veins prevent backflow of blood.
Reason: Blood pressure in veins is higher compared to arteries.
Answer-(a) Both assertion and reason are true, and reason is the correct explanation of assertion.
19. Assertion: Capillaries are where exchange of materials occurs between blood and cells due to their thin walls.
Reason: Capillaries have thick, muscular walls to withstand high blood pressure.
Answer-(b) Both assertion and reason are true, but reason is not the correct explanation of assertion.
20. Assertion: Platelets release chemicals that cause blood vessels to dilate.
Reason: This helps in increasing blood flow to injured areas.
Answer-(c) Assertion is true, but reason is false.