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Biology Group I[40 marks] Attempt All Questions Question 1: A. Name the following: [5] a. A condition in which very dilute urine is passed out. b. The defect of the eye where image is formed in front of the retina. c. Tiny pores through which guttation occurs. d. The part of cerebrum concerned with thinking, memory and reasoning. e. A gas that is responsible for acid rain. B. State whether the following statements are True or False. If False, rewrite the correct form of the statement by changing the underlined word only: [5] a. The lens in the eye becomes more convex to look at distant object. b. Cranial nerves arise from the brain. c. Deafness is caused due to the rupturing of the pinna. d. Urethra carries urine from kidney to the urinary bladder. e. Thylakoids are present in mitochondria. C. Define the following: [5] a. Ganglion b. Osmosis c. Reflex action d. Polymerization e. Green house effect D. Mention the exact location and function of the following: [5] a. Meninges b. Ear ossicles c. Chordae tendinae d. Glomerulus e. Guard cells E. Rewrite and complete the following sentences by inserting the correct word in the space inserted: [5] a. The disease caused by the hyposecretion of thyroxine in children in ________ b. ________ is the defect of the eye when lens becomes opaque. c. ________ is the immediate product of photosynthesis. d. Main source of ozone layer depletion is _______ e. The apparatus used to demonstrate osmosis is called ________. F. The figure shows a variegated leaf: [5] a. What do you mean by a variegated leaf? b. Give two examples of plants with variegated leaf. c. If the leaf is subjected to iodine test, what colour change would you observe in the green and yellow portions respectively? d. Give suitable reasons for your answer in (iii) above e. Give a complete balanced reaction of the process that is being considered. G. Match the items in column A with those which are most appropriate in column B. Rewrite the matching pairs: Column A a. Light Reaction b. Carbon dioxide c. Lubb d. Phosphates e. Neutrophils [5] Column B i. Pulmonary artery ii. Eutrophication iii. Global warming iv. Grana v. Atrial Systole vi. Affinity for haemoglobin vii. Stroma viii. Phagocytosis
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