BOARD OF SECONDARY EDUCATION (TELANGANA) SUMMATIVE ASSESSMENT - I TENTH CLASS BIOLOGY MODEL PAPER

Size: px

Start display at page:

Download "BOARD OF SECONDARY EDUCATION (TELANGANA) SUMMATIVE ASSESSMENT - I TENTH CLASS BIOLOGY MODEL PAPER"

Howard Evans
5 years ago
Views:

1 BOARD OF SECONDARY EDUCATION (TELANGANA) SUMMATIVE ASSESSMENT - I TENTH CLASS BIOLOGY MODEL PAPER PAPER II (ENGLISH VERSION) Time: 2 hrs. 45 mins. PART A & B Maximum Marks: 40 INSTRUCTIONS: i) 15 minutes allocated to read the question paper, 2.30 hours to write the answers. ii) Part A must be answered in a separate answer sheet. iii) Students can take Part A (Question paper) with them. iv) Part B (Bit paper) should tag to the answer sheet and give them to the invigilator. Time: 2 hrs. PART A Marks: 35 Note: i) Answer all the questions from the given three Sections I, II and III of PART A. ii) In Section III, every question has Internal Choice, Answer any one alternative. SECTION I Note: i) Answer the following questions in 1 2 sentences. ii) Each question carries ONE Mark. 7 1 = 7 1. Define the photosynthesis with equation. 2. What is emulsification? 3. Mention the apparatus in hydrilla experiment. 4. How do you appreciate the lungs function in respiration? 5. The chemical Janus green B is used to identify? 6. Draw the diagram of single circulation? 7. What is the precautions to take for kidney's health? SECTION II Note: i) Answer the following questions in 4 5 sentences. ii) Each question carries TWO Marks. 6 2 = Mention two differences between Respiration Combustion. 9. Which questions you will ask a doctor to control B.P.? 10. Write the flow chart of pathway in respiration? 11. Draw the diagram of Mitochondria with labeled parts. 12. How do you appreciate the kidney function in excretion? 13. How can you say carbohydrates are not digested in the stomach? TS-MP ONLINE-18

2 SECTION III Note: i) Write FOUR questions given below. ii) Each question has Internal Choice. iii) Each question carries FOUR Marks. iv) Answer each question in 8 10 sentences. 4 4 = What is malnutrition? Explain some nutrition deficiency diseases. Describe the Internal structure of Human heart. 15. Describe the other excretory organs in human body. Explain the process of urine formation. 16. Explain the light screen experiment which you have done on your classroom? How can you prove that heat is generated in respiration? 17. S.No. Enzyme Gland Juice Digestive Acts on Products Questions: 1. Ptyalin Salivary Saliva Carbohydrates Maltose 2. Pepsin Stomach Gastric juice Proteins Peptones 3. Bile Liver Bile Juice Fats Emulsification 4. Lipase Pancreas Pancreatic Juice Fats Fatty acids Glycerole 5. Sucrase Small Intestine Intestinal Juice Sucrose Glucose Answer the following questions: i) Which enzyme acts on carbohydrates? ii) The digestive juice which is not enzyme? iii) Which enzyme acts on fats? iv) Sucrase acts on? phylum Excretory Organ 1. Protozoa Simple diffusion From the body Surface 2. Platyhelminthes Flame Cells 3. Arthropod Green glands, Malpighian tubes 4. Mammals Kidneys i) Which phylum animals excrete through diffusion? ii) What are the excretory organs in housefly? iii) What is the excretory organs in developed animals? iv) What is the excretion essentiality in animals?

Time: 30 Minutes PART - B Marks: 5 INSTRUCTIONS: i) Answer ALL the questions. ii) iii) iv) Each question carries 1 2 Mark. Answers are to be written in question paper only.

v) Write the CAPITAL LETTER (A, B, C, D) showing the correct answer for the following questions in the brackets provided against them. 10 1 = 5 2 1. Cellulose is a.

3 Time: 30 Minutes PART - B Marks: 5 INSTRUCTIONS: i) Answer ALL the questions. ii) iii) iv) Each question carries 1 2 Mark. Answers are to be written in question paper only. Marks will not be awarded in any case of over writing and rewriting or erased answers. v) Write the CAPITAL LETTER (A, B, C, D) showing the correct answer for the following questions in the brackets provided against them = Cellulose is a... ( ) A) carbohydrate B) protein C) lypase D) mineral 2. The enzyme acts on fats...? ( ) A) ptyalin B) bile C) lipid D) sucrase 3. The structural functional unit of lungs ( ) A) Neuron B) Cell C) Nephron D) Alveole 4. The end Products of anerobic respiration... ( ) A) Lactic acid + energy B) CO 2 + H 2 O C) Ethonole + CO 2 D) A, C 5. Lumen The figure shows us... ( ) Linking Cells A) Capillaries B) Arota C) Vein D) Muscle 6. Mitrole valve locates between ( ) A) Left atrium left ventricle B) Right atrium right ventricle C) Aorta Starting place D) None of these 7. The fluid which is form after blood clotting? A) Serumm B) Fibrin C) plasma D) Lymph 8. The alkoloid acts as pain killer ( ) A) Quinine B) Reserpin C) Marphine D) Nimbine 9. ESRD distinguish...? ( ) A) Nerve disease B) Heart disease C) Lungs disease D) Kidney failure 10. The figure indicates ( ) A) Transpiration B) Light Essential C) CO 2 Essential D) Root Pressure

4 ANSWERS PART A SECTION I 1. Define the photosynthesis with equation? A: Photosynthesis is the process by which green plants containing chlorophyll, produce food substances (glucose & starch) from CO 2 and water by using light as source of energy. light 6CO H 2 O - C 6 H 12 O H 2 O + 6 O 2 chlorophyll 2. What is emulsification? A: Fats are digested by converting them into small globule like forms by the help of the bile juice secreted from liver. This process is called "emulsification". 3. Mention the apparatus in Hydrilla experiment? A: Beaker, Funnel, Test tube, Hydrilla plants & water. 4. How do you appreciate the lungs function in respiration? A: When the lungs inhaled the air they can expand and exhaled the air they contraction. The lungs has elastic movements. In the lungs the gaseous exchange alveoli to capillaries through diffusion is a wonderful phenomena. 5. The chemical Janus green B is used to identify? A: To check the oxygen has been removed from the glucose mixture, add a few drops of Janus Green B solution. 6. Draw the diagram of single circulation. A: 7. What is the precautions to take for Kidney's health? A: Drink sufficient water. Do sufficient exercise to body. No excitement nor angry. Single Circulation Less use of antibiotic medicines.

SECTION II 8. Mention two differences between Respiration - Combustion? A: Combustion Respiration It occurs in surroundings. It occurs in living body. Energy releases at once.

5 SECTION II 8. Mention two differences between Respiration - Combustion? A: Combustion Respiration It occurs in surroundings. It occurs in living body. Energy releases at once. Energy releases step by step 9. what are the questions you will ask a doctor to control B.P? A: i) What is B.P? ii) How much is a normal Blood pressure? iii) what is high B.P? iv) what is the precautions to take control the B.P? 10. write the flowchart of pathway in respiration. A: Nostrils Nasal cavity Pharynx Larynx Blood Alveolus Bronchioles Bronchus Trachea 11. Draw the diagram of mitochondria with labeled parts. A: Outer membrane Inner membrane Criste Mitochondria Matrix 12. How do you appreciate the kidney function in excretion? A: Each Kidney has more than 10 lakhs nephrons. They can filter the blood in Bowmans capsule and reobsorb the useful substances in tubule. If one Kidney failure then another kidney expand in size and take the function anothers. 13. How can you say carbohydrates are not digested in the stomach? A: The gastric juice produced by stomach donot contain the enzyme "ptyalin" or "amylase". It contains only Renin, lepase, pepsin. Hence carbohydrates are not digested in the stomach. SECTION III 14. what is malnutrition? Explain some nutrition deficiency diseases. A: Eating of food that does not have one or more than one nutrients in required amount is know as malnutrition. kwashiorkor disease: This is due to protein deficiency in diet. Body Parts become swollen due to accumulation of water in the inter cellular spaces. Very poor muscle development, swollen legs, fluffy face, difficult to eat, diarrhoea, dry skin are the symptoms. Marasmus: This is due to deficiency of both proteins and calories. Generally this disease occurs when there is an immediate second pregnancy or repeated child births. Symptoms: Lean, weak, swelling limbs, less developed muscles, dry skin, diarrhoea, etc.

Q. Describe the Internal structure of human heart. A: Internally heart is divided into four chambers. Two upper parts are 'auricles' and lower ones are 'ventricles'.

6 Q. Describe the Internal structure of human heart. A: Internally heart is divided into four chambers. Two upper parts are 'auricles' and lower ones are 'ventricles'. The two articles are separated from each by inter atrioler septum and the right and left ventricles are separated from each other by inter ventricular septum. The walls of the ventricles are relatively thicker than auricle walls. Pulmonary artery that arises from the right ventricle carries deoxygenated blood to lungs. Aorta arises from the left ventricle supplies blood to all the body parts except lungs. The right auricle and right ventricle are connected to each other by right atrio ventricular aperture. Tricupsid value guards adjacent in right atrio ventricular apratuse. The left auricle and left ventricle are connect to each other by left atrio ventricular aperture and it has Bicep side valve. Blood from the anterior parts of the body collected by superior venacava which opens into right atrium. Blood from the posterior parts of the body is collected by inferior venacava which opens into right atrium. Coronary arteries supply blood to the muscles of the heart where as coronary views collect blood from the heart. It also opens into right atrium. pulmonary artery (right branch) right pulmonary veins superior vena cava right atrium arteries head artery to left arm right artio vetricular value inferior vena cava right ventricle Internal Structure of Heart aorta pulmonary artery (left branch left pulmonary veins left atrium semi - lunar valve in the pulmonary artery left artio vetricular value left ventricle

15. Describe the accessory excretory organs in human body? A: Lungs, skin, liver are carryout excretion as a secondary function Lungs: In respiratory process lungs remove CO 2 and water.

Since the skin sends out plenty of water and small amount of salts, it serves as an excretory organ. Liver: Liver is also involved in urea formation.

7 15. Describe the accessory excretory organs in human body? A: Lungs, skin, liver are carryout excretion as a secondary function Lungs: In respiratory process lungs remove CO 2 and water. Skin: It consists of large number of sweat glands richly supplied with blood capillaries, from which they extract sweat and some metabolic wastes. Since the skin sends out plenty of water and small amount of salts, it serves as an excretory organ. Liver: Liver is also involved in urea formation. It produces bile pigments (bilirobin, biliverdin & urochrome) which are metabolilc wastes of hemoglobin of dead R.B.C Bilerubin, biliverdin are excreted through bile along with cholesterol and derivatives of steroid hormones, vitamins and alkaline salts. Lung Skin Liver Intestine Q. Explain the process of urine formation? A: Due to metabolism several harmful excretory products are formed, the process of removing toxic waste from the body is called "excretion". Formation of urine involves 4 stages: i) Glomerular filteration ii) Tubular reabsorption iii) Rubular seoretion and iv) Concentration of urine Glomerular filteration: Blood flows from renal artery to glomerules through afferent arteriole. Filteration of blood occurs in glomerulus. Glomerular filterate is also knows as primary urine which almost equal to blood in chemical composition except presence of blood cells. Tubular Reabsorption: The primary urine passes into Proximal convoluted tubule. Useful substances like Glucose, Amino acids, NaCl, K + HCO 3 ions and 75% of water are re absorbed into peritubular network. Tubular Secretion: After reabsorption in reabsorption in proximal convoluted region (PCT) the urine travels through the loop of hand into distal convoluted tubule. Here, some other wastes like extra ions of K +, NO +, Cl, H + secrets from peritubular capillaries into distal convoluted tubele which are surrounded by peritubular network.

Concentration of urine: 75% of water content of the nephric filtrate is reabsorbed in the region of proximal convoluted tubule and 10% of water passes out of filtrate through osmosis in the area of

The hormone is secreted only when concentrated urine is to be passed out. 16. Explain the Light screen experiment which you have done in your class room.

8 Concentration of urine: 75% of water content of the nephric filtrate is reabsorbed in the region of proximal convoluted tubule and 10% of water passes out of filtrate through osmosis in the area of loop of Henle. Concentration of urine takes place in the area of collecting tubes in the passes of hormone called 'vasopressin'. The hormone is secreted only when concentrated urine is to be passed out. 16. Explain the Light screen experiment which you have done in your class room. A: Aim: To prove that sunlight is necessary for photosynthesis experiment. Apparatus: Potted plant, Light screen, Iodine solution, Petridish, Black paper. Black paper experiment Procedure: Take a potted plant and destarch it by keeping in the dark for 3 4 days. Cover one of its leaves with black paper on which a design is cut on both sides of leaf. Fix the paper on the leaf in such a manner that light does not enter the dark past. Place this plant in the sun for few hours. After few hours of exposure to bright sunlight, test the leaf which is covered by black paper for the presence of starch. Observation: It will be observed that only the parts of the leaf, which could get sunlight through the cut out design, turns blue black showing the presence of starch. Result: This experiment proves that light is necessary for photosynthesis. Q. How can you prove that heat is generated in respiration? A: Aim: To prove that heat is liberated in respiration. Apparatus: Thermos flask, Thermometer, Rubber corbs, Germinating seeds. Thermometer Thermos flask Germinating seeds Heat evolved during respiration

9 Procedure: Take some germinating seeds in a thermosflask. Fix it with a single hole cork put a thermometer in it. Must be kept the thermometer nobe among the germinating seeds. Check the temperature for every two hours to get good result continue it for 24 hours. Observation: Constant increase in the temperature is observed in thermometer placed in the germinating seeds. Result: Hence, it is proved that germinated seeds respire and liberate heat which is responsible for increase in the temperature. 17. S.No. Enzyme Gland Digestive juice Acts on Products 1. Ptyalin Salivary Saliva Carbohydrates Maltose 2. Pepsin Stomach Gastric juice Protiens Peptones 3. Bile (No enzyme) Liver Bile juice Fats Emlusifcation 4. Lipase Pancreas Pancreatic juice Fats Fattyacids Glycerol 5. Sucrase Small intestine Intestinal juice Sucrose Glucose questions: Q. i. Which enzyme acts on carbohydrates? A: Ptyaline ii. The digestive juice which is no enzyme? A: Bile Questions: iii. Which enzymes acts on fats? A: Bile, Lipase iv. Sucrace acts on? A: Sucrose Phylum Excretory Organ 1. Protozoa Simple diffusion From the body Surface 2. Platyhelminthes Flame Cells 3. Arthropod Green glands, Malpighian tubes 4. Mammals Kidneys i. Which phylum animals excrete through diffusion A: Protozoa ii. What are the excretory organs in housefly? A: Malphigion tubules

10 iii. What are the excretory organs in developed animals? A: Kidneys iv. What is the essentiality of excretion in animals? A: Due to metabolism several harmful excretory products are formed. It contains tonic substances. PART B 1 A; 2 C; 3 D; 4 D; 5 A; 6 A; 7 A; 8 C; 9 D; 10 A. Writer: Shivalinga Goud

Website: Page 1. Page 113»Exercise» Question 1:

Website: Page 1. Page 113»Exercise» Question 1: Page 113»Exercise» Question 1: The kidneys in human beings are a part of the system for (a) nutrition. (b) respiration. (c) excretion. (d) transportation. (c) In human beings, the kidneys are a part of