Nội dung text 28 Life Science Paper-II.pdf
Test Paper : II Test Subject : LIFE SCIENCE Test Subject Code : K-2814 Test Booklet Serial No. : _______________________ OMR Sheet No. : _________________________________ Roll No. (Figures as per admission card) Name & Signature of Invigilator/s Signature: ____________________________________ Signature: ___________________________________ Name : ____________________________________ Name : ___________________________________ Paper : II Subject : LIFE SCIENCE Time : 1 Hour 15 Minutes Maximum Marks : 100 Number of Pages in this Booklet : 8 Number of Questions in this Booklet : 50 K-2814 1 /P.T.O. Instructions for the Candidates 1. Write your roll number in the space provided on the top of this page. 2. This paper consists of fifty multiple-choice type of questions. 3. At the commencement of examination, the question booklet will be given to you. In the first 5 minutes, you are requested to open the booklet and compulsorily examine it as below : (i) To have access to the Question Booklet, tear off the paper seal on the edge of this cover page. Do not accept a booklet without sticker-seal and do not accept an open booklet. (ii) Tally the number of pages and number of questions in the booklet with the information printed on the cover page. Faulty booklets due to pages/questions missing or duplicate or not in serial order or any other discrepancy should be got replaced immediately by a correct booklet from the invigilator within the period of 5 minutes. Afterwards, neither the Question Booklet will be replaced nor any extra time will be given. 4. Each item has four alternative responses marked (A), (B), (C) and (D). You have to darken the oval as indicated below on the correct response against each item. Example :A B C D where (C) is the correct response. 5. Your responses to the questions are to be indicated in the OMR Sheet kept inside the Paper I Booklet only. If you mark at any place other than in the ovals in the Answer Sheet, it will not be evaluated. 6. Read the instructions given in OMR carefully. 7. Rough Work is to be done in the end of this booklet. 8. If you write your name or put any mark on any part of the OMR Answer Sheet, except for the space allotted for the relevant entries, which may disclose your identity, you will render yourself liable to disqualification. 9. You have to return the test OMR Answer Sheet to the invigilators at the end of the examination compulsorily and must NOT carry it with you outside the Examination Hall. 10. You can take away question booklet and carbon copy of OMR Answer Sheet soon after the examination. 11. Use only Blue/Black Ball point pen. 12. Use of any calculator or log table etc., is prohibited. 13. There is no negative marks for incorrect answers. 1. ! ! " # $% 2. &'( !) *+ ,-./ 0 '1 "2 "2 3 % 3. $ ( 4 5' 6 7 '1 " ( " 2 8 52 % 5- 92 ( 0" 0 ( 0 ( 85 5 : $ ;4 ( 5 % (i) '1 " ( 2 ' 15 (51 8 7) ( < = )" $# $% (>, ? '1 " ( @ ( $ A 3%0 ( @ ( " $ A 3% (ii) ! "#$ ! "%$&" ' "(&")*+ (#, -.$/,0)&1 2",(3 2", "",45& 2",6#7)"& " #, & & 89.# :'5;<8& "=>1 < ?. &. 67"@&',A BC D@ @&',A',"(51)"& EF"" :',"(5 4. '&+ '1 2" (A)7(B)7(C) 0 (D)B 2 & 5 , CD E02F % '1 " B $CE0 7( 2 (5G 0 < 85(H& "(5 I A ( % G&,E70H A BC D (C)$CE0 55J2% 5. '1 " &'( I ( K> OMR E0)5 7 I"# II767";"IG#7 J#K&L%OMR E0 )5 < 85(H& A C E0 "2 & 7 < LM N C C852 % 6. OMR E0)5 ( >O 2 "P52(0 # Q$. 7. B5(8 ( "( ( C80(, J% 8. 2 0 "!R 23!) 5 ) Total Number of Pages : 8 Paper II 2 K-2814 1. The bond formed by sharing of electrons between two atoms is called (A) Electrovalent bond (B) Coordinate bond (C) Covalent bond (D) Ionic bond 2. Which of the following enzyme causes DNA strand separation during replication ? (A) Polymerase (B) Helical (C) Ligase (D) Nuclease 3. The reversal of the gene order which may result when 2 breaks occur in the same chromosome is called (A) Inversion (B) Duplication (C) Translocation (D) Deletion 4. Which of the following sequences correctly describes the cell cycle phases ? (A) G1 → G2 → S → G0 → mitosis (B) S → G2 → mitosis → G1 → G0 (C) G0 → G1 → S → G2 → mitosis (D) Mitosis → G1 → G0 → S → G2 5. In which type of cleavage the egg or ovum is not completely divided into blastomeres ? (A) Holoblastic cleavage (B) Unequal holoblastic cleavage (C) Discoidal meroblastic cleavage (D) Meroblastic cleavage 6. Cancers arising from epithelial cells is called (A) Adenoma (B) Carcinoma (C) Sarcoma (D) Leukemia 7. “Vermiform appendix” is part of which of the following ? (A) Alimentary canal (B) Vascular system (C) Nervous system (D) Reproductive system 8. Respiratory system of cockroach is (A) Integument (B) Lungs (C) Gills (D) Trachea LIFE SCIENCE Paper – II Note : This paper contains fifty (50) objective type questions. Each question carries two (2) marks. All questions are compulsory.
Total Number of Pages : 8 K-2814 3 Paper II 9. Which hormone regulates the amount of urine by controlling the rate of water absorption in nephron tubules ? (A) Oxytocin (B) Antidiuretic hormone (ADH) (C) Luteotropic hormone (LTH) (D) Thyronine 10. In which of the following technique radionuclides are used ? (A) PET Scan (B) CT Scan (C) CAT Scan (D) Ultrasonography 11. Which of the following could not be a correlation coefficient ? (A) 0 (B) –0.3 (C) 10 (D) 1 12. Which of the following is arranged in correct sequence for systematic classification ? (A) Kingdom, phylum, family, order, genus, class, species (B) Kingdom, phylum, class, order, family, genus, species (C) Kingdom, order, phylum, genus, class, family, species (D) Kingdom, order, phylum, family, class, genus, species 13. Formation of diverse species from a single ancestor is called (A) Mutualism (B) Commensalism (C) Speciation (D) Adaptive radiation 14. Life on the earth originated about (A) 1.5 billion years ago (B) 2.5 billion years ago (C) 3.5 billion years ago (D) 4.5 billion years ago 15. Diversity encompass (A) Species richness (B) Species frequency of occurrence (C) Relative abundance (D) Both (A) and (B) 16. The great barrier reef exists nearer to (A) Australia (B) New Zealand (C) Malaysia (D) Indonesia 17. The term ‘halophilic’ refers to (A) Temperature tolerance (B) Salinity tolerance (C) Tolerance to low water activity (D) Tolerance to acidic pH