1. In most plants, the food is transported in the form of;
(a) Glucose
(b) Sucrose✅
(c) Starch
(d) Proteins
2. Stomata close when the guard cells;
(a) Lose water✅
(b) Gain chloride ions
(c) Become turgid
(d) Gain potassium ions
3. Trace the pathway of water from the soil through the plant to the atmosphere.
(a) Endodermis, cortex, epidermis, xylem, mesophyll, intercellular stomata spaces in
(b) Epidermis, endodermis, phloem, cortex of leaf, intercellular spaces of mesophyll, stomata
(c) Root hairs, epidermis, Cortex, xylem, endodermis, intercellular spaces in mesophyll, stomata
(d) Root hairs, cortex, endodermis. xylem, intercellular spaces in mesophyll, stomata✅
4. When fibrinogen makes blood clot, it separates from blood and the remainder is calatrium
(a) Plasma
(b) Lymph
(c) Serum✅
(d) Puss
5. What is correct about human red blood cells?
(a) Have limited life span✅
(b) Are capable of phagocytosis
(c) Produce antibodies
(d) Are multinucleate
6. Which of the following tissue layer is found in all blood vessels?
(a) Smooth muscle
(b) Endothelium✅
(c) Skeletal muscle
(d) Connective tissue
7. When do the atria contract?
(a) Before diastole
(b) after systole
(c) During diastole
(d) during systole✅
8. Which of following contains deoxygenated blood in an adult human?
(a) Left atrium.
(b) pulmonary artery✅
(c) Pulmonary vein
(d) All of the above
9. Which of the following chambers has the thickest walls in human heart?
(a) Right atrium
(b) Left atrium
(c) Left ventricle✅
(d) Right ventricle
10. Which of these statements is correct about the circulatory system?
(a) It transports hormones✅
(b) Capillaries have thicker walls than veins
(c) Systemic circulation carries blood to and from the lungs
(d) All are true
11. The exchange of materials between the blood and the surrounding tissues occurs in;
(a) Arteries
(b) Veins
(c) Capillaries✅
(d) All of the above
12. Which of the following is a type of leukocyte?
(a) Lymphocytes
(b) Eosinophil
(c) Monocyte
(d) All of the above✅
13. Which of the following is a function of human blood?
(a) It regulates body temperature
(b) It transports wastes
(c) It provides defense
(d) All of the above✅
14. Valves to prevent the backflow of blood are found in;
(a) Arteries
(b) Veins✅
(c) Capillaries
(d) All of the above
15. Plasma is made up of water and________.
(a) Metabolites and wastes
(b) Salts and ions
(c) Proteins
(d) All of the above✅
16. Which of these are responsible for blood clotting?
(a) Platelets✅
(b) Erythrocytes
(c) Neutrophils
(d) Basophils
17. Find the correct path of blood circulation.
(a) Left atrium, left ventricle, lungs, right atrium, right ventricle, body
(b) Right atrium, right ventricle, lungs, left atrium, left ventricle, body✅
(c) Left atrium, left ventricle, right atrium, right ventricle, lungs, body
(d) Right atrium, lungs, right ventricle, left atrium, body, left ventricle
18. A patient with blood group A can be given the blood of donor who has;
(a) Blood group A or AB
(b) Blood group A or O✅
(c) Blood group A only
(d) Blood group O only
19. The death of the heart tissue is called;
(a) Arteriosclerosis
(b) Atherosclerosis
(c) Myocardial infarction✅
(d) Thalassaemia
20. What happens when a mismatched blood group is injected in recipient?
(a) Antibodies of the recipient's blood destroy donor's RBCs
(b) Antibodies of the donor's blood breakdown recipient's RBCs
(c) Both of these can happen✅
(d) None of these happens and such transfusion can be safe
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