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VýS$Æý‡$ÐéÆý‡… l Ð]l*Ça l 5 l 2015 IMPORTANT QUESTIONS 1 Mark 1. What is respiration? A. It is the process by which food is broken down for release of energy. 2. In Latin what does the respiration mean? A. It means “to breathe”. 3. What is vitiated air? A. It is a term used to show air from which the component needed for burning had been removed. 4. What is the function of epiglottis? A. It controls the movement of air and food towards their respective passages. 5. What is breathing? A. 1. It is the process of inhaling and exhaling. 2. The mechanism by which organisms obtain O2 from the environment and release CO2 is called ‘breathing’. 6. What are pleura? A. Pleura are the two membranes that protect the lungs from injury. 7. What is cellular respiration? A. Oxidation of glucose or fatty acids takes place in the cells releasing energy. Hence this process is known as “cellular respiration”. 8. What is main reason for feeling pain in muscles after strenuous exercise? A. Due to the anaerobic respiration in muscles large amounts of lactic acid accumulates and this results in muscular pain. 9. What is the full form of ATP? How is it formed? A. 1. ATP stands for adenosine triphosphate. 2. The energy released during respiration process is used to make an ATP molecule from ADP and inorganic phosphate[P]. 10. What are the substances that are used for the production of energy in all living organisms? or What are respiratory substrates? A. Glucose and Fatty acids are used for the production of energy. The substances which are oxidised to liberate energy are called ‘Respiratory substrates’. 2 Marks 1. How does choking of wind pipe is caused by food? 2. Why does the rate of breathing increase while walking uphill at a normal pace in the mountains? Give two reasons? 3. Why does a deep sea diver carry O2 on his/ her back? 4. Where will the release of energy from glucose in respiration take place? Mala writes lungs while Jiya writes muscles. Who is correct and why? 5. How are alveoli designed to maximize the exchange of gases? 4 Marks 1. Differentiate between: a) Inspiration and expiration b) Aerobic and anaerobic respiration c) Respiration and combustion d) Photosynthesis and respiration 2. Write your observations in combustion of sugar activity? 3. Write an experiment to prove that CO2 is evolved during respiration? 4. With the help of an experiment show that heat is liberated during respiration? 10th Special 3. TRANSPORTATION 1. The term cardiac refers to which organ in the body a) Heart b) Vein c) Lymph d) Capillary 2. Pulmonary vein opens into a) Right auricle b) Left auricle c) Right ventricle d) Left ventricle 3. Which structures of the heart control the flow of the blood a) arteries b) veins c) valves d) capillaries 4. Which of the following opinions is correct a) Ravi said, xylem and phloem cells arranged one upon the other to form a tube like structure b) John said, xylem and phloem are not separate tube like structures c) Salma said, xylem and phloem cells connect together to form a tube like structure d) Hari said, because of its shape they said to be tube like structures 5. An aphid pierces its proboscis into the ____to get plant juices a) xylem b) phloem c) cambium d) vascular bundle 6. Valves of heart allow blood to flow in a) One direction b) Both directions c) Many directions d) Left ventricle 7. Pulmonary Aorta starts from a) Right ventricle b) Left ventricle c) Left auricle d) Right auricle 8. Shape of the heart a) Rectangular b) Oval c) Pear d) Square 9. Aorta originates from a) Right ventricle b) Right auricle c) Left auricle d) Left ventricle 10. Normal Blood Pressure of human beings a) 80/120 b) 100/120 c) 120/80 d) 120/150 11. Largest artery a) Coronary artery b) Pulmonary artery c) Aorta d) None 12. Largest vein a) Pulmonary vein b) Venacava c) Coronary vein d) None 13. Pulmonary vein contains a) Oxygenated blood b) Deoxygenated blood c) Mixed blood d) None 3 Biology 1) a; 6) a; 11) c; ANSWERS 2) b; 3) c; 4) d; 5) b; 7) a; 8) c; 9) d; 10) c; 12) b; 13) a. IMPORTANT QUESTIONS 1 Mark 1. What is heart beat? A. The word heart beat represents one contraction and one relaxation of heart. The contraction phase is called systole and relaxation phase is called diastole. 2. Why is there more pressure in arteries than veins? A. The arteries receive blood from heart. So blood pressure is more. 3. The wall of left ventricle is thicker than the wall of the right ventricle. Give reason? A. As it pumps blood to more distant parts of the body (such as fingers and toes) the left ventricle is thicker than the right ventricle. 4. What is transpiration? A. The process of loss of water from plants in the form of water vapour through stomata is called transpiration. 5. How does opening and closing of stomata take place? A. When guard cells are filled with water, the walls of the cells are pulled away and the pores open up. When the water content is low the walls of guard cells collapse and close the stomata. 6. What happens to your feet after overnight journey in sitting position without moving? A. Lower part of the legs gets swollen. It is clearly seen in elders. 7. Why is it advised to take low amount of salt in food? A. Because the salt (sodium) levels will be more in accumulated water at the time of edema. If salt is not reduced, the salt levels increase. 8. What precaution will be taken by edema effected people while sleeping? A. People with swollen feet or legs can keep the legs elevated above the level of heart while sleeping. 9. What is the reason for edema? A. Edema may occur due to inactivity. Fluid retention develops after fluid flows down into the lower extremities causing swelling. 2 Marks 1. Which type of blood vessels carry blood away from the heart? 2. Which is the largest artery in the body? Why is it big in size? 3. Describe the blood vessels that carry away blood from human heart? 4. What is coagulation of blood? Which type of blood cells are helpful for this? 4 Marks 1. What is the relationship between blood and plasma? 2. What is the use of platelets? 3. Write differences between a) Systole - diastole b) Veins-arteries 4. What is root pressure? How is it useful to the plant? 5. Phloem is a food source for some animals. How can you justify this statement? 6. What is your inference about experiment with aphids? 7. After reading this lesson what precautions you would suggest to your elders about edema? 8. Give an account of valves in the human heart? 4. EXCRETION 1. The excretory unit in the human excretory system is called a) Neuron b) Nephron c) Nephridia d) Flame cell 2. The excretory organ in cockroach a) Malphigian tubules b) Raphids c) Ureters d) Nephridia 3. Malphigian tubes are excretory organs in a) Earthworm b) Housefly c) Flatworm d) Hen 4. Major component of urine is a) Urea b) Sodium c) Water d) Creatine 5. Special excretory organs are absent in a) Birds b) Amobea c) Sponges d) a and b 6. Which of the following hormones has direct impact on urination a) adrenal b) vasopressin c) creatine d) estrogen 7. Amber colour to urine due to a) urochrome b) bilirubin c) biliverdin d) chlorides 8. Sequence of urine formation in nephron is a) Glomerular filtration, Tubular reabsorption, Tubular secretion b) Tubular reabsorption, Tubular secretion, Glomerular filtration c) Tubular secretion, Glomerular filtration, Tubular reabsorption d) Tubular reabsorption, concentration of urine, Tubular secretion 9. Part of the nephron that exists in outer zone of kidney a) Loop of the henle b) PCT c) DCT d) Bowman’s capsule 10. After having lunch or dinner one can feel to pass urine, because of a a) Stomach pressures on bladder Charles Darwin (1809-1882) was born in England. He proposed "Natural Selection' the famous "Theory of evolution'. He voyeged for five years, gathered a lot of information and evidences.