QUESTION BOOKLET Post Applied for : Extension Inspector Q.B. Series A

Question Book Number QUESTION BOOKLET Post applied for : Extension Inspector Q.B. Series A Name of the candidate: _______________________________________ Date of Examination ____________________________ Roll Number: Invigilator Signature INSTRUCTIONS TO THE CANDIDATES: Read the instructions carefully before filling the OMR answer sheet: 1. Use Blue/Black ball point pen for shading the ovals. 2. Mark your Roll Number, Question Booklet number and Question Booklet series on the OMR Answer Sheet carefully and sign at the appropriate place. Write your Roll number and name on the question booklet 3. Strictly follow the instructions given by the Centre Supervisor/ Room Invigilator and those given on the Question Booklet. 4. The test is of objective type. This Question Booklet contains a total of 200 questions and the total time allotted is 2 hours. 5. Each objective question is followed by four answers. Your task is to choose the correct answer and mark your answer on the OMR Answer Sheet and NOT on the Question Booklet. 6. Completely darken the circle pertaining to correct answer so that the alphabet inside the circle is not visible. Darken ONLY ONE CIRCLE for each answer. If you have darken more than one circle your answer will be treated as wrong 7. Please mark the right answers ONLY with Blue/Black Ball point pen. 8. All questions are compulsory. There will be 1 mark for each correct answer. 0.25 marks will be deducted for every WRONG answer. 9. Do not make any stray marks any where on the OMR answer sheet. DO NOT fold or wrinkle the OMR answer sheet. Rough work MUST NOT be done on the answer sheet. Use your blank sheet on the question book let for this. 10. Candidates are not allowed to carry any papers, notes, books, calculators, cellular phones, scanning devices, papers etc. to the Examination Hall. Any candidate found using, or in possession of such unauthorized material, including in copying or impersonation or adopting unfair means, is liable to be summarily disqualified and may be subjected to penal action. 11. After finishing the examination, hand over the admit card, complete question booklet and the OMR Answer Sheet along with its carbon copy. DO NOT carry the question booklet or any part of it, outside the examination room. Doing so, is liable to disqualify your candidature. 12. No candidate shall leave the examination hall even if he / she has completed his / her paper. After completion of the examination, all candidate should remain seated until all booklets and answer sheets are collected by the invigilator and instructed thereafter to leave the examination hall. ***** 1 1 In a proliferating cell system how many mitotic divisions are required to produce 1024 cells from a single parent cell? a) 10 b) 20 c) 512 d) 1023 2 Which one of the following enzymes is responsible for the synthesis of DNA from RNA polymerase? a) RNA polymerase b) DNA polymerase c) Reverse transcriptase d) DNA ligase 3 Which one of the following classes of compounds is most useful in comparative studies for determining the ancestral relationship? a) Amino acids b) Nucleotide sequences c) Nucleic acids d) Proteins 4 Senescence of detached leaves can be delayed by the use of: a) Auxin b) Gibberellins c) Cytokinins d) Ethylene 5 C4 plants are more efficient in photosynthesis than C3 plants because of : a) Higher leaf area b) The presence of a larger number of chloroplasts c) The presence of thin cuticle on the d) Lower photorespiration leaf surface 6 Other than sugarcane, a major source of sugar is: a) Ipomoea batatas b) Beta vulgaris c) Acer saccharum d) Solanum tuberosum 7 Which of the following have been more often used than any other group of plant substances in chemotaxonmic studies? a) Flavonoids b) Terpenoids c) Alkaloids d) Iridoids 8 The species in which the evolutionary process has been influenced by man to meet his needs is called: a) Adventive species b) Introduced species c) Neutralized species d) Domesticated species 9 Which one of the following microorganisms is widely used for the biological control of plant diseases a) Trichoderma viride b) Fusarium cubense c) Streptomyces scabies d) Bacillus subtilis 10 Mycorrhizal fungi mobilise nutrients from soil to roots of plants. The nutrient in question is: a) organic acid b) phosphorus c) manganese d) potassium 2 11 Common indicator organism of water pollution is: a) Salmonella typhi b) Entamoeba histolytica c) Vibrio cholera d) Escherichia coli 12 Artificial seeds are produced by: a) Immobilization of somatic embryos b) Biotransformation c) Biosynthesis d) Enzymatic isolation 13 Which constituent of the soil is not reflected in the mineral composition of the plants: a) Oxygen b) Iron c) Silicon d) Aluminum 14 Which one of the following plants has dimorphic chloroplasts in its leaves? a) Zea mays b) Triticum aestivum c) Oryza sativa d) Nicotiana tobacum 15 The hyphae of a fungi contains a) Nuclei b) Cytoplasm c) Both d) None 16 Which factor of Darwin’s theory of natural selection is incorrect: a) Excessive multiplication b) Struggle for existence c) Inheritance of useful variations d) Natural selection 17 In chiasmatic meiosis, the distal segments of the daughter chromatids segregate from each other at: a) The anaphase – I b) The anaphase – II c) Partially at anaphase –I and partially d) Diakinesis at anaphase – II 18 The smallest unit of DNA capable of coding for the synthesis of a polypeptide is the: a) Operon b) Promoter c) Cistron d) Replicon 19 Lodging in grasses is prevented due to accumulation of: a) Selenium b) Sodium c) Silicon d) Cobalt 20 On storage, the sweetness of corn is lost due to conversion of soluble sugars into polysaccharide. If corn is immersed after harvest in boiling water and cooled, the sweetness remains because of: a) Polysaccharide is re-converted into b) Concentration of sugar increases soluble sugars due to heating c) Conversion of sugars to d) Enzymes responsible for the polysaccharide stops conversion are destroyed 3 21 UV or X-ray radiation is not suitable for photosynthesis in green plants because such a radiation: a) Is not visible b) Is not absorbed by chlorophyl c) Cause ionisation of chlorophyll d) Leads to an increase in rotational and vibrational energy of chlorophyll 22 Which one of the following pairs represents products obtained from the same plant? a) Nutmeg and mace b) Cotton and kapok c) Nimbidin and nicotine d) Rubber and resin 23 Clove (Syzygium aromaticum) is the: a) Thin pod like capsules b) Elongated light brown fruits c) Dried unopened flower buds d) Dried stigmas and top of styles 24 Petrification is a process of : a) Decomposition b) Fossilisation c) Food preservation d) Emission of foul smell 25 Consider the following statements about vesicular arbuscular mycorrhizae 1. They are phycomycetous endomycorrhizae 2. Their inoculations increase production in several crops 3. They are absent in rice fields which are flooded with water a) 1, 2 and 3 are correct b) 1 and 2 are correct c) 2 and 3 are correct d) 1 and 3 are correct 26 Consider the following statements, Conservation, preservation and further enhancement of vegetation cover on the earth would: 1. Reduce the green house effect 2. Check thickening of the ozone layer 3. Save valuable gene pool 4. Reduce ecological backlashes Of these statements: a) 2 and 4 are correct b) 1,2 and 3 are correct c) 1,3 and 4 are correct d) 1,2,3 and 4 are correct 27 Which one of the following statement is true for the evergreen trees? a) They shed their leaves during a b) They do not shed their leaves particular season only c) They shed their leaves all the year d) They do not show leaf round senescence 28 The main advantage of vegetative propagation is that it: a) Is quite easy b) Is reliable c) Produce genetically uniform progeny d) Produces healthy, disease resistant plants 4 29 Triticum aestivum, a common wheat is: a) Autopolyploid b) Autodiploid c) Allotertraploid d) Allohexaploid 30 Vessels and companion cells are the characteristic features of a) Gymnosperms b) Angiosperms c) Pteridophytes d) Fungi 31 Moulds belong to a) Phycomycetes b) Myxomycetes c) Ascomycetes d) Basideomycetes 32 Cocaine is obtained from the leaves of : a) Erythroxylyn coca b) Thea sinensis c) Thubroma cacao d) Coffee arabica 33 In cell division, kinetochore helps in a) The formation of synaptonemal b) Condensing the chromatin complex c) Attaching chromosome with spindle d) Cytokinesis fibres 34 Transgenic plants can act as living bioreactors for the production of chemicals and pharmaceuticals. This is known as a) Agriculture farming b) Molecular farming c) Pharmacotechnology d) Organic farming 35 Somaclonal variation can be advantageous because: a) There are chromosomal b) Monosomics are produced abnormalities c) Enrichment of genetic diversity d) It gives high genetic uniformity occurs 36 Allelopathic effect of excretions of one plant species on another associated plant species is related to: a) Healing of wounds b) Inhibition of growth c) Promotion of closer association d) Prevention of attack by pathogenic microbes 37 Zea mays is a: a) Day – neutral plant b) Long day plant c) Short day plant d) Long –short day plant 38 The “Bird of Paradise” belongs to which one of the following genera? a) Butea b) Strelitzid c) Nymphea d) Musa 5 39 Which one of the following is used for pulp bleaching in the paper industry? a) Mild sulphuric acid b) Glucose isomerase c) Chlorofluorocarbon d) Chlorine and water 40 Which one the following algae is reported to produce an antibiotic? a) Nostoc b) Ectocarpus c) Chlamydomonas d) Chlorella

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