Paper 1 Answer all questions. Each question is followed by four options, A, B, C and D. For each question, choose one answer only
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1 hapter 19 lood irculation and Transport Paper 1 nswer all questions. Each question is followed by four options,,, and. For each question, choose one answer only 1. Type of blood cell P Q R Function Protects body from disease Transports oxygen Helps in blood clotting The table above shows three types of blood cells P, Q, and R and their respective functions. Which of the following blood cells has/have nucleus? P only P and Q only Q and R only P, Q and R 2. Which of the following is true about platelets? Platelets have nuclei Platelets are formed in the liver Platelets transport oxygen Platelets help the clotting of blood 3. Which of these is true about red blood cells and white blood cells? Red blood cells White blood cells Have nuclei o not have nuclei o not transport oxygen Transport oxygen iconcave in shape o not have a fixed shape Produced by bone marrow Produced by heart 4. Which of the following parts of the heart has the highest pressure during heartbeat? Right ventricle Left ventricle Left atrium Right atrium 1
2 5. Figure 1 Figure 1 shows the structure of the heart. Which of the following is true about the blood vessels X and Y? X Y oes not have valve Has valve Thin wall Thick wall arries oxygenated blood arries deoxygenated blood lood under high pressure lood under low pressure 6. The figure above shows the structure of a blood capillary. Which of the following are the characteristics of blood vessels X and Y? X Y arries oxygenated blood arries deoxygenated blood Has thick muscular wall Has thin wall Has small lumen Has large lumen Has valve oes not have valve 7. Which of the following is not a characteristic of red blood cells? iconcave in shape o not have nuclei ontain haemoglobin Less in number as compared to white blood cells 2
3 8. student with blood group can receive blood from a donor with O blood type only blood type only and O blood types only,, and O blood types 9. Which of the following blood vessels carries deoxygenated blood? orta Pulmonary vein Pulmonary artery Renal artery 10. section of a stem has its bark and phloem cut and removed as shown in the figure above. fter it has been left for two weeks, it is found that section X has become swollen section Y has become swollen sections X and Y have become swollen section Y secretes water droplets 3
4 11. section of a stem has its bark and phloem cut and removed as shown in the figure above. Which of the following accumulates in part X? Food Water Mineral salt arbon dioxide 12. The figure above shows a cross-section of the stem of a dicotyledon plant. What are structures X and Y? X Y Phloem Vascular bundle Xylem Phloem Phloem Xylem Vascular bundle Xylem 4
5 13. Figure 4 Which of the following is the function of the structure labelled X? Transports water and mineral salt Transports food substances Prevents excessive loss of water llows oxygen to enter 14 The figure above shows a type of blood cell. The function of this blood cell is to destroy bacteria transport oxygen produce antitoxin clot blood 15. Which of the following is the function of blood? I ontrols body temperature II Protects body from bacteria III arries waste material to excretory organs I and II only I and III only II and III only 5
6 16. Which of the following are the characteristics of red blood cells? I Have fixed shape II Have nuclei III ontain haemoglobin I and II only I and III only II and III only 17. White blood cells I produce antibodies in the body II digest bacteria in the blood III do not have nuclei I and II only I and III only II and III only 18. Which of the following are characteristics of a blood capillary? I II III Has valve Has thick muscular wall arries blood from arteries to veins I only III only I and III only 6
7 19. Figure 6 The root of a dicotyledon plant which is submerged in red-coloured water is placed under sunlight. fter three hours, the plant is taken out and its stem is cut transversely. Which of the parts labelled P, Q and R will be coloured red? I P II Q III R I only III only II and III only 20. The figure above shows the structure of a blood vessel. Which of the following is probably the blood vessel? I Pulmonary vein II lood capillary III Vena cava I and II only II and III only I and III only 7
8 Paper 2 nswer the question. The figure above shows a stem of a plant with a section of its bark removed. The plant is watered every day for a period of two weeks. (a) (i) What is accumulated at the part marked X at the end of the experiment? (ii) Explain your answer in (a)(i). (b) What happens to the part of the plant marked Y at the end of the experiment? (c) raw in the space below your observation at the end of the experiment. (d) Name the plant structure that was removed which caused the change in the stem. (e) Will the plant still be alive after one week? Explain. 8
9 nswers: Paper Paper 2 (a) (b) (c) (i) Food. (ii) Food cannot be transported to the bottom of the stem. It withers. (d) (e) Phloem Yes, water can still be transported from the roots to the stem through the xylem. 9
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