FIRST TERMINAL EVALUATION-2016 Answer Key- Biology- Std IX 1. Chlorophyll a 2. b. Incisors helps to bite and cut the food d. Premolar helps to grind the food 3. a. Globulin b. Maintain blood pressure c. Coagulation of blood 4. c. Dentine-Living tissue which forms the tooth 5. a. Oxygen b. When sunlight falls directly the evolution of the gas is more, but when it falls indirectly, air bubbles are not evolved. Sunlight is essential for photosynthesis. 6.
A
a. X=Blood capillaries Y= Lacteal b. Fatty acid and glycerol are absorbed into lacteal. Diffusion. OR B a. Peristalsis b. Peristalsis in the stomach converts food into a paste-like form. Different components in the gastric juice secreted by glands in the stomach will play very important role in the process of digestion. c. Hydrochloric acid (Hcl) kills germs in the food. Regulates pH for the digestion instomach. 7. a. Valves are absent b. Have minute pores on the wall. 8. a. Trypsin b. Converts starch into Maltose 9. * Fatty food leads to obesity, atherosclerosis, high blood pressure, diabetes, heart diseases etc * It is unhealthy to drink cola drinks, fried foods etc * Nutritional food is required for proper growth and health of the body. * Our traditional food meets this need. (any 4 points related with good food habits) 10. a.
b . When blood flows through capillaries, plasma oozes through small pores to intercellular space. This fluid is tissue fluid. Through tissue fluid nutrients, O2 and other essential materials are exchanged into cells and CO2 and wastes are exchanged. 11. a. Joseph Priestley b. Van Niel:- The source of O2 evolved during photosynthesis is water. Melvin Calvin:- Explained the various stages of the formation of glucose during photosynthesis 12. B
13.
a. (B) Bile. b. Bile secreted by liver converts fat in to small particles and make the food alkaline. Pancreatic lipase in the pancreatic juice converts fat in to glycerol and fatty acid 14.
a. X=Tricuspid valve Y= Bicuspid valve b. Pulmonary valve: Prevents the backward flow of blood from the pulmonary
artery to the right ventricle. Aortic valve: Helps blood enter the aorta 15. A
Light Reaction
Dark Reaction
Converts solar energy to chemical energy
Produces glucose utilizing energy from ATP molecules
Releases oxygen given by splitting water
Hydrogen is added to carbon dioxide
OR
16.
B. Glucose is easily soluble in water it can't be stored in plant body. Therefore, plants store glucose in the form of starch. It is utilised for life activities and to produce substances for growth. a. C b. X= Systolic pressure Y= Diastolic pressure. c. Sphigmomanometer
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Suneera V K H S A Natural science TSS Vadakkangara
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