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Biology: General Instructions 1. Attempt all questions from Section I and any four questions from Section II. 2. The intended marks for questions or parts of questions are given in brackets. SECTION I (40 Marks) Attempt all questions from this Section. Question 1 (a) Name the following: [8] i. ii. iii. iv. v. vi. vii. viii. The cavity in the body in which the human lungs are located. The soluble protein present in blood plasma responsible for clotting. The part of the female reproductive system where fertilization takes place. The organisation that provides help and relief to victims of flood. The process by which leucocytes engulf and destroy bacteria. Respiratory openings found on stems of woody plants. The process by which intact plants lose water in the form of droplets. Plants that prepare their own food from basic raw materials. (b) Complete the following statements (i) to (vi) by choosing the correct alternative from those given in the brackets: [6] i. ii. iii. iv. v. vi. The protective covering of lungs is the (pericardium, pleura, diaphragm). Bacteria found in the nodules of leguminous plants are (saprophytic, parasitic, symbiotic) in nature The gaseous pollutant which causes acid rain is (carbon monoxide, carbon dioxide, nitrogen dioxide). The valve present between the left atrium and the left ventricle is the (tricuspid valve, bicuspid valve, semi-lunar valve). The blood vessel supplying blood to the kidney is the (renal vein, renal artery, dorsal aorta). Which of the following is an insecticide? (Phenol, DDT, carbolic acid) (c) (a) State whether the following statements are True or False: [6] i. ii. iii. iv. v. vi. Deafness is caused due to the rupturing of the pinna. Penicillin obtained from Penicillium notatum is an antibody. The percentage of oxygen in inspired air is 16.4. Cells that have lost their water content are said to be deplasmolysed. Photosynthesis results in loss of the dry weight of the plant. Xylem is the water conducting tissue in plants.
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