Friday, 1 May 2015

Old Papers for Biology


BIOLOGY 
(I CLASS - 120111 (73) 
OBklIECTIVK 
TIME: 20 MINUTES MARKS: 17 
NOTE:All the questions are to be attempted. Write your Roll No before attetiquing the paper iv space provided for this purpose. Answers are so be given on this very y shad. (Culling , over-writing, using lead pencil , rubber or ink-remover will result into loss of marks) I. Each question has four possible answers. Tkk mark I ? ) the correct answer 17
 I- • A stnictureVithin the cell that performs a specific function is (a) Cell (b) Tissue (e) Organ (d) Organelle
 2. Number of carbon atoms in a molecule of pernatie acid is (a) 2 (b) 4 (c) 16 (d) 18
 3- Reversible inhibitors form weak linkages with the (a) Enzyme (r) Substrate (c) Reactant (d) Product
 4• Ccntriolc is associated with (a) DNA synthesis (b) Spitulle formation (e) Respiration 61) Reproduction 
5. The five kingdom system ofelausification is pospowd by (a) R. Koch (b) R. Hooke . (c) It Brinsn (d) It Whittaker
 6- Bacteria without any Regale arc called (a) Mich.» (h) Monotrithou (c) Lophotiehous Id) Pee ariehous
 7- The cause of malaria is (a) Trypanosorna (b) Plasmodius (c) Amoeba (di Pon anc,tun
¦ 8- Smut Nom belong to genus (a) estilago (b) Puccinia (c) Alternaria (d) Palk:Mint.
 9-Anihouuos is commonly called (a) Moss (b) Had cup moss (c) Homwort (d) l iyel wort
 10- Diplob;astic animals belong to division (a) Protozoa (10 l'araroa (c) Echtnalermata (d) Radiata 11- All life on planet earth is powered by (a) Chemical energy (b) Solar energy (0) Electrical energy (d) Atomic energy 
12. During calvin cycle the carbon a fixed and reduced resulting in the synthesis of (a) Protein (b) Fat (c) Enzyme (d) Sugar 
13- One of the following play a slight antiseptic role in oral cavity (a) Water (b) Mucus (0) Sodium bicarbonate (dl Amylase 
14. The door or lm chest cavity in man is (a) Diaphragsrr (Id Pericardium (0) Pleura (d) 
15. The lymph vessels empty in (a) Arteries 0» Arterioles (0) Capillaries (d) Veins 
16. A serum containing antibodies is called (a) Antigen (b) Antiserum (c) Antibody Antigen complex (d) Lymph 
17- The inevcment °livening and closing of stomata is caused by (a) Ca (b) Mg le) K (d) Na 

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