9th class Biology Chapter no.9 MCQs
Unit no.9 MCQs of 9th Class Biology
Transport:
1. In most plants the food is transported in the form of:
a. Starch
b. Glucose
c. Proteins
d. Sucrose
2. Stomata close when guard cells:
a. Become turgid
b. Lose water
c. Gain potassium ions
d. Gain chloride ions
3. At very high temperature i.e. ……… stomata closure occurs to stop transpiration:
a. more than 70 oC
b. 20 oC – 25 oC
c. 40 oC – 45 oC
d. 60 oC
4. The transpiration is regulated by:
a. Xylem cells
b. Mesophyll cells
c. Phloem cells
d. Guard cells
5. Rate of transpiration decreases by the increase of:
a. Air humidity
b. Temperature
c. Leaf surface area
d. Air movement
6. Transpiration take place through:
a. Lenticels
b. Stomata
c. Cuticle
d. All
7. Which part of plants is responsible for transporting water?
a. Root
b. Xylem
c. Leaf
d. Phloem
8. Evaporation of water from the surface of plant is called:
a. Transpiration
b. Guttation
c. Transportation
d. Translocation
9. Water enters into root hairs by means of:
a. Active transport
b. Diffusion
c. Passive transport
d. Osmosis
10. In phloem, movement of food is ……… way:
a. Three way
b. One way
c. Four way
d. Two way
11. Food is transported through:
a. Phloem
b. Xylem
c. Mesophyll
d. Cortex
12. Food is formed in the form of:
a. Starch
b. Glucose
c. Maltose
d. Sucrose
13. Acute deficiency of water in plants is called:
a. Transpiration
b. Dessication
c. Nutrition
d. Respiration
14. A tissue that transports water and dissolved salts from roots to upper parts of plants:
a. Cambium
b. Xylem
c. Ground tissue
d. Phloem
15. Guard cells belong to:
a. Cortex
b. Pericycle
c. Endodermis
d. Stomata
16. When fibrinogen makes blood clot it separates from blood and the remainder is called:
a. Serum
b. Plasma
c. Puss
d. Lymph
17. What is correct about human red blood cells?
a. Produce antibodies
b. Have limited life span
c. Are multinucleate
d. Are capable of phagocytosis
18. Which of the following tissue layer is found in all blood vessels?
a. Skeletal muscle
b. Smooth cells
c. Connective tissue
d. Endothelium
19. When do the atria contract?
a. During diastole
b. Before diastole
c. During systole
d. After systole
20. Which of the following contains deoxygenated blood in an adult human?
a. Pulmonary vein
b. Left atrium
c. All of the above
d. Pulmonary artery
21. Which if the following chambers has the thickest walls in human heart
a. Right ventricle
b. Right atrium
c. Left ventricle
d. Left atrium
22. To exchange of materials between the blood and the surrounding tissues occurs in:
a. Capillaries
b. Arteries
c. Veins
d. All of above
23. Which of the following is a type of leukocyte?
a. Monocyte
b. Lymphocyte
c. Eosinophil
d. All of above
24. Which of the following is a function of human blood?
a. It provides defense
b. It regulates body temperature
c. It transports wastes
d. All of these
25. Valves to prevent the backflow of blood are found in the:
a. Capillaries
b. Arteries
c. Veins
d. All of these
26.Plasma is made up of water and:
a. Metabolites and wastes
b. Proteins
c. Salts and ion
d. All of these
27. A patient with blood group A can be given the blood of donor who has:
a. Blood group A only
b. Blood group A or AB
c. Blood group O only
d. Blood group A or O
28. Which cells of blood are responsible for clotting?
a. Neutrophils
b. Platelets
c. Basophils
d. Erythrocytes
29. ……… are the most numerous in healthy human blood:
a. Platelets
b. R.B.Cs
c. Monocytes
d. W.B.Cs
30. Which of the following blood group is called the universal recipient?
a. AB
b. A
c. O
d. B
31. In one heartbeat, diastole lasts about:
a. 0.3 sec
b. 0.4 sec
c. 0.8 sec
d. 0.1 sec
32. “Lub-dubb” can be heard with the help of a:
a. Stethoscope
b. Telescope
c. Sound box
d. Microscope
33. The average weight of a human heart is:
a. 250-350 grams
b. 200-250 grams
c. 100-200 grams
d. 150-200 grams
34. Normal pH of blood is:
a. 7.7
b. 7.1
c. 7.9
d. 7.4
35. Average life of red blood cell is:
a. 220 days
b. 130 days
c. 430 days
d. 120 days
36. Plasma proteins which maintain the balance of water in blood is:
a. Fibrin
b. Albumin
c. Hemoglobin
d. Fibrinogen
37. In adult human red blood cells are produced in:
a. Liver
b. Ribs
c. Lungs
d. Spleen
38. Exchange of materials only takes place between blood and surrounding tissues through:
a. Capillaries
b. Arteries
c. Veins
d. All
39. There are how many chambers in the human heart?
a. Five
b. Three
c. Six
d. Four
40. Which chamber of heart has the thicket walls?
a. Right ventricle
b. Left atrium
c. Left ventricle
d. Right atrium
41. To stop backward flow of blood, which of these has valves?
a. Capillaries
b. Arteries
c. Nerves
d. Veins
42. The largest and strongest chamber in heart is:
a. Right ventricle
b. Left atrium
c. Left ventricle
d. Right atrium
43. The world heart day is celebrated on:
a. 29 August
b. 9 March
c. 28 September
d. 29 December
44. Salts make up ……… plasma by weight:
a. 0.7%
b. 0.6%
c. 0.9%
d. 0.8%
45. The largest artery is called:
a. Hepatic artery
b. Aorta
c. Renal artery
d. Intercostal artery
46. Blood group B consists of antigen ……… and antibodies ………:
a. Antigen None and Antibodies AB
b. Antigen A and Antibodies B
c. Antigen B and Antibodies A
d. Antigen AB and Antibodies None
47. Human heart is enclosed in a double membranous sac called:
a. Peritoneum
b. Pleura
c. Pericarp
d. Pericardium
48. Blood pressure in veins is:
a. Medium
b. High
c. Low
d. Very high
49. The protein which helps in blood clotting is:
a. Fibrinogen
b. Albumin
c. Hemoglobin
d. Antigen
50. Average life duration of a platelet is ……… days:
a. 7-9
b. 7-8
c. 8-9
d. 6-7
51. What percentage of plasma weight consists of protein?
a. 7-9
b. 1-2
c. 5-9
d. 2-5
52. The average adult body has about volume of blood:
a. 7 litre
b. 5 litre
c. 8 litre
d. 6 litre
53. The smallest blood vessels are:
a. Capillaries
b. Veins
c. Arteries
d. Lymph vessel
54. Which cells become deficient in blood curing dengue fever?
a. WBCs
b. RBCs
c. Platelets
d. None
55. Mosquito that transmits dengue fever:
a. Female culex mosquito
b. Anopheles mosquito
c. Male culex mosquito
d. Aedes mosquito
56. The heartbeat of healthy woman per minute is:
a. 75
b. 90
c. 79
d. 92
57. Anemia is caused due to the deficiency of:
a. Calcium
b. Iron
c. Phosphorous
d. Magnesium
58. Which of the following blood vessels carry deoxygenated bloo
a. Pulmonary vein
b. Aorta
c. Pulmonary artery
d. Renal artery
59. The universal recipient has antigen:
a. Rh
b. A
c. A and B
d. B
60. Hepatic portal vein carries blood from small intestine to:
a. Kidney
b. Liver
c. Colon
d. Heart
61. Which of the following blood group have antigen A?
a. B
b. AB
c. O
d. A
62. When fibrinogen makes blood clot, it separated from blood and rest is called:
a. Plasma
b. Puss
c. Lymph
d. Serum
63. This blood group is called universal donor:
a. A and B
b. A
c. O
d. AB
64. The volume of blood in adult human is:
a. 4 litre
b. 6 litre
c. 3 litre
d. 5 litre
65. The accidental death of cell is called:
a. Metastasis
b. Necrosis
c. Blebs
d. Apoptosis
66. When blood cells are separated from blood, the rest is called:
a. Protein
b. Plasma
c. Water
d. Serum
67. Tissue layer which is common in all blood vessels is:
a. Connective tissue
b. Smooth muscles
c. Circular tissues
d. Endothelium
68. In a tissue, capillaries join to form small veins:
a. Capillaries
b. Lumen
c. Arterioles
d. Venules
69. A person having none of the antigen A and B has blood group:
a. O
b. B
c. A
d. AB
70. ABO blood groups system was introduced by:
a. Robert Brow
b. Robert Koch
c. Schwann
d. Karl Landsteiner
71. The size of R.B.Cs is:
a. 6 um
b. 2 um
c. 8 um
d. 4 um
72. Which cells play role in body defense?
a. Basophils
b. Erythrocytes
c. Leukocytes
d. Thrombocytes
74. The death of heart tissue is called:
a. Myocardial infarction
b. Atherosclerosis
c. Thalassemia
d. Arteriosclerosis
75. Myocardium means:
a. Ambulus
b. Death of tissue
c. Chime
d. Muscles of heart
76. Blood cancer is:
a. Leukemia
b. Thalassemia
c. Arthritis
d. Pneumonia
77. Myocardial infraction means:
a. Heart muscle
b. Thrombus
c. Tissue death
d. Embolus
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