21. Which of the followings in not true about the opening and Closing of Stomata?
(a) Light helps in the opening and closing of stomata
(b) K ions are responsible for the opening and closing of stomata
(c) The responsible of stomata osmosis of water is for the opening and closing
(d) None of these✅
22. The rate of transpiration is increased when:
(a) Low light
(b) Temperature decrease
(c) Humidity increased
(d) none of these✅
23. Which of the followings is area of supply of food in plants?
(a) Leaf
(b) Stem
(c) Fruit
(d) All✅
24. There is separation of oxygenated and deoxygenated blood in birds and mammals because:
(a) The ventricles are completely divided✅
(b)The ventral aorta is divided into aortic and pulmonary trunk.
(c) The aortic arch is divided into two systemic arches.
(d) None of above
25. Which of the following blood vessels have oxygenated blood?
(a) Pulmonary artery
(b) pulmonary vein✅
(c) Superior vena cave
(d) inferior vena cave
26. The amount of plasma in blood is:
(a) 35%
(b) 45%
(c) 55%✅
(d) 65%
27. The percentage of inorganic salts and ions in the plasma is.:
(a) 0.6
(b) 0.7
(c)0.8
(d) 0.9✅
28. The normal pH of the human blood is:
(a) 6.4
(b) 7.4✅
(c) 8.4
(d) 9.4
29. The percentage of the plasma protein in the blood is:
(a) 4-5
(b) 5-6
(c) 7-8
(d) 7-9✅
30. Which of the following proteins is not present in the plasma of the blood?
(a) Immunoglobulin or antibodies
(b) Prothrombin
(c) Haemoglobin✅
(d) Fibrinogen
31. Which of the following cells is most abundant in the blood?
(a) Red blood cells✅
(b) White blood cells
(c) Platelets
(d) None of the above
32. A cubic millimeter blood of male contains RBC:
(a) 5-5.5 million✅
(b) 4-4.5 million
(c)3-4 million
(d) none of the above
33. Which of the followings are not Granulocytes?
(a) Neutrophils
(b) eosinophils
(c) Monocytes✅
(d) basophils
34. Pus is formed from which of the following dead white blood cells?
(a) Lymphocytes✅
(b)eosinophils
(c) Monocytes
(d) basophils
35. Which of the following structure are not cells.
(a) Lymphocytes
(b) eosinophils
(c) Monocytes
(d) platelets✅
36. Which of the following process is a homeostasis?
(a) To maintain the amount of water constant in the blood✅
(b) To maintain the functioning of the body
(c) To maintain the process of respiration
(d) To maintain the muscular activity
37. Which of the following is not the function of blood?
(a) It transport gases in the body
(b) It transports reproductive cells in the body✅
(c) It transport food within the body
(d) It transport waste material in body
38. Which of the followings is Leukaemia?
(a) Uncontrolled production of RBC
(b) Uncontrolled production of WBC✅
(c) Uncontrolled production of Platelets
(d) All of the above
39. Thalassaemia is an abnormality of:
(a) RBC✅
(b) WBC
(c) Platelets
(d) None of these
40. The valve present between right atrium and right ventricle is called:
(a) Tricuspid valve✅
(b) Bicuspid valve
(c) Semilunar valve
(d) none of the above
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