Stomata and Functions Quiz PDF: Questions and Answers - 3

MCQ 11: Guard cells of stoma are

1. irregular in shape
2. convex in shape
3. long and cylindrical in shape
4. kidney-shaped

MCQ 12: Special kind of protein containing iron is called as

1. hormones
2. hemoglobin
3. fibrinogen
4. globulins

MCQ 13: In the cardiac system, systole means

1. a "lub" sound
2. ventricular relaxation
3. closure of semilunar valves
4. a "dub" sound

MCQ 14: The pH of succus entericus is

1. below 7
2. neutral
3. above 7
4. depending upon the type of food to be digested

MCQ 15: Pulmonary veins carry

1. red oxygenated blood
2. bluish red deoxygenated blood
3. deoxygenated blood from heart to the lungs
4. oxygenated blood from lungs to heart