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St. George H.S Chempanthotty, MID TERM EXAMINATION, Std -10, , Biology, , Time - 1 Hour, Mark - 20, , Questions 1 - 4 carry 1 mark each, 1. The part where the muscles that regulate the size of the pupil are seen., a. Lens, , c. Cornea, , b. Iris, , d. Ciliary muscles, , 2. Select the odd one out., a. Dendron, b. Axon, c. Synapse, d. Synaptic knob, 3. Select the correct pair., a. Lens - point of maximum visual clarity, b. Cornea - refracts light rays on the retina, c. Sciera - the inner layer of the eye
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4. Identify the nerves arising from the eyes., , a. Optic nerve, b. Ligaments, c. Circular muscles, d. None of these, , 2 Score for each questions from 5 - 7, 5. Symptoms of two diseases are given. Identify them and write any one cause of person, B’s disease .
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6. Ventricles of the brain contain a fluid which is formed from the blood and, re-absorbed into the blood ., a. Name the fluid, b. Write any three functions of it, 7. Complete the flowchart related to reflex actions., , 8. Some actions of the sympathetic nervous system are given . Analyse and arrange them under, proper headings., , ( Score 3 ), , a. The pupil of the eye dilates, b. Glucose is converted to glycogen, c. Production of hormone decreases, d. Peristalsis slows down, 9. Which among the following pictures represent the change in lens while viewing distant, objects., , List out the changes taking place in the eyes while viewing nearby objects, , ( Score 3 )
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10. Redraw the given diagram and label the following parts. ( Score 4 ), , a. Part which secretes neurotransmitters., b. Part which receives impulse., c. Part which carries impulses from the cell body to outside., , Upload your answer sheet in Teachmint.
