Seed Science & Technology Model test 1.pdf
- 1. SEED SCIENCE & TECHNOLOGY MODEL TEST 1 Dr. K. Vanangamudi Formerly Dean (Agriculture), AC & RI, Coimbatore Dean, Adhiparashakthi Agricultural College, Kalavai Professor & Head (Seed Science & Technology) Tamil Nadu Agricultural University, Coimbatore. 1. Synthetic seeds are a. Artificially synthesised seeds b. Somatic embryos encapsulated in suitable matrix c. Seeds of plants modified genetically d. None of these 2. Somatic embryoids are a. Identical with zygotic embryos and without seed coats b. Identical with zygotic embryos and with seed coats c. Non-identical with zygotic embryos and without seed coats d. Non-identical with zygotic embryos and with seed coats 3. The production of high-quality and uniform embryos has been limited to only a. Carrot b. Alfalfa c. Both (a) and (b) d. Sandalwood 4. The preserved embryoids are termed as a. Synthetic seeds b. Semi-synthetic seeds c. Natural seeds d. Fermented seeds 5. Encapsulation is necessary to produce and protect synthetic seeds. The encapsulation is carried out by various types of hydrogels, which are a. Soluble in water b. Soluble in organic solvents c. Insoluble in water d. Insoluble in organic solvents 6. In drosophila (fruit flies), eye colour is sex-linked and red eye colour is dominant to white eye colour. Which of the following are not possible in a cross between a red-eyed male and a heterozygous female? a. Red-eyed male b. White-eyed male c. Carrier female d. Homozygous white-eyed female
- 2. 7. Which statement concerning a pair of alleles for a gene controlling a single characteristic in humans is true? a. Both genes come from the father b. Both genes come from the mother c. One gene comes from the mother and one gene comes from the father d. The genes come randomly in pairs from either the mother or father 8. Which of the following factors could lead to variations in the offspring of asexually reproducing organisms? a. Crossing over b. Fertilization c. Mutations d. Independent assortment 9. Genetic traits of seeds are noted as follows: L = long, l = short W = wrinkled, w = smooth Y = yellow, y = white R = ribbed, r = grooved Which of the following is the genotype for a short, wrinkled, yellow, grooved seed? a. llWwyyrr b. LLWWyYRr c. LlWwYYRr d. llWwYYrr 10. Mendel discovered the principles of inheritance because he: a. Observed simultaneously all of the many characteristics in which the parents differed. b. Believed that the hereditary characteristics of two individuals became thoroughly blended in the offspring. c. Ignored all characteristics except a few markedly contrasting ones in which he studied. d. Studied only the offspring obtained from a single mating. 11. Carriers of the colour-blindness trait include: a. Men who are heterozygous for the trait b. Men who are homozygous for the trait. c. Women who are heterozygous for the trait d. Women who are homozygous for the trait. 12. Which one of the following statements is wrong? a. Intine is made up of cellulose and pectin b. Vegetative cell is larger than generative cell c. Pollen grains in some plants remain viable for months d. When pollen is shed at two-celled stage, double fertilization does not take place 13. Vernalisation stimulates flowering in a. Carrot b. Turmeric c. Elephant yam d. Ginger 14. Ornithophily refers to the pollination by which of the following: a. Snails b. Birds c. Insects d. Air 15. Ovule is attached to the placenta of ovary wall by: a. Funicle b. Raphae c. Hilum d. Testa 16. Plants with ovaries having only one or a few ovules, are generally pollinated by a. Birds b. Butterflies c. Bees d. Wind
- 3. 17. Hot water treatment is used to break dormancy in a. Lentil b. Cherry c. Cotton d. None 18. Mak – 12 is a variety of a. Maize b. Medicago c. Bt cotton d. Tomato 19. Difference between seed and grain is a. Seed processing b. Genetic purity c. Seed quality d. Cost 20. Fanning mill is a. Air screen cleaner b. Hammermill c. Blower d. Rice mill 21. National nematode collection of india is located at– a. New Delhi b. Dharwad c. Anand d. Bangalore 22. Phenotype refers to the _____ of an individual a. Genetic makeup b. Actual physical appearance c. Recessive alleles d. None of the above 23. The idea that different pairs of alleles are passed to offspring independently is Mendel's principle of a. Unit inheritance b. Segregation c. Independent assortment d. All of these 24. The idea that for any particular trait, the pair of alleles of each parent separate and only one allele from each parent passes to an offspring is Mendel's principle of a. Independent assortment b. Hybridization c. Segregation d. None of these 25. Which of the following is totally impossible outcome of Mendel’s Experiment? a. 3 tall 1 short plant b. 24 tall and 8 short plants c. 8 tall and 0 short plants d. 4 tall plants and 1 medium height plant 26. Which of the following is not a direct conclusion that can be drawn from Mendel’s Experiment? a. Only one parental trait is expressed b. Two copies of each trait is inherited in sexually reproducing organism c. For recessive trait to be expressed, both copies should be identical d. Natural selection can alter frequency of an inherited trait. 27. Which one is a possible progeny in F2 generation of pure bred tall plant with round seed and short plant with wrinkled seeds? a. Tall plant with round seeds b. Tall plant with wrinkled seeds c. Short plant with round seed d. All of the above 28. Which section of DNA provides information for one protein a. Nucleus b. Chromosomes c. Trait d. Gene 29. Mode of pollination in maize is– a. Self-pollination b. Vegetative propagation c. Cross-pollination d. None
- 4. 30. T2 test colour of living tissues of seed changed to– a. Red b. Blue c. Yellow d. Green 31. Maximum moisture content for safe storage in wheat seed is– a. 12 b. 15 c. 7 d. None 32. The structure and function of nitrogenase can be studied by– a. Nmr b. Epr c. Massbauer spectroscopy d. All 33. In india, normally how many generation system seeds are produced? a. 1 b. 2 c. 3 d. 4 34. Multiple effects of a single gene is known as a. Polyploidy b. Heteroploidy c. Pleiotropy d. None of these 35. Which system is used for hybrid seed production in onion? a. Dioecious b. Cytoplasmic male sterility c. Genetic male sterility d. Self incompatibility 36. What is seed multiplication ratio in potato and groundnut are respectively? a. 1:4 and 1:8 b. 1:8 and 1:4 c. 1:8 and 1:10 d. 1:10 and 1:8 37. A mating among the following cannot lead to heterosis a. AAbb x aaBB b. AABBccdd x AABBccdd c. AABBccdd x aabbCCDD d. aaBBcc x AABBCC 38. Pure line variety is a a. Homozygous – Heterogenous b. Homozygous – Hemogenous c. Heterogenous – Heterogenous d. Heterogenous – Homozygous 39. Centre of diversity refers to the area where cultivated plant species and or their wild relatives show a. Low competition with unrelated species b. Highest variation c. High ecosystem diversity d. Highest variation and high ecosystem diversity 40. Production of seedless grapes require– a. Gibberlins b. NAA c. Ethylene d. IAA 41. Inflorescence of cauliflower is called– a. Catkin b. Head c. Curd d. None 42. Pusa snow ball is variety of– a. Sapota b. Cauliflower c. Ber d. Cabbage 43. Development of embryo without fertillization is– a. Apomixis b. Amghimixis c. Parthenocarpy d. None
- 5. 44. Which of the following is not part of a seed? a. Stored food b. The cotyledon c. The fruit d. The embryo 45. The Parthenogenesis refers to a. With seeds after pollination b. Without seeds after pollination c. With viable seeds after fertilization d. Seedless without fertilization 46. An example of naturally occurring parthenocarpic fruit a. Guava b. Mango c. Banana d. Apple 47. In which of the following plants, Cotyledons form the first pair of leaves? a. Maize b. Castor c. Rice d. Bean 48. Seedless fruits in vitis are formed due to a. Sterility b. Double fertilization c. Syngamy d. Parthenocarpy 49. Which blood type would not be possible for children of a type AB mother and a type A father? a. O b. A c. B d. AB 50. Long radishes crossed with round radishes result in all oval radishes. This type of inheritance is: a. Multiple alleles b. Complete dominance c. Co-dominance d. Incomplete dominance 51. If two white sheep produce a black offspring, the parent’s genotypes for colour must be: a. Heterozygous b. Homozygous white c. Homozygous black d. Not enough information was given 52. An extra finger in humans is rare but is due to a dominant gene. When one parent is normal and the other parent has an extra finger but is heterozygous for the trait, what is the probability that the first child will be normal? a. 0% b. 25%. c. 50% d. 75% 53. Nucellar polyembryony is reported in species of a. Brassica b. Citrus c. Gossypium d. Triticum 54. Endosperm of angiosperms results after fertilization from a. Synergids b. Secondary nucleus c. Antipodal cells d. Egg 55. Fertilization in which male gametes are carried through pollen tube is known as a. Porogamy b. Syngamy c. Siphonogamy d. Chalazogamy 56. Fragrant flowers with well developed nectaries are adapted for a. Anemophily b. Hydrophily c. Entomophily d. Zoophily 57. Germ pore is the region where the exine is a. Thin b. Uniform c. Think and Uniform d. Absent
- 6. 58. How many microspore mother cell will produce 1000 microspores? a. 100 b. 200 c. 250 d. 500 59. Compound layering is also called as a. Air layering b. Serpentine layering c. Trench layering d. Mound layering 60. Which of the following method is suitable for combining the desirable characters of two plants together in a single plant ? a. Layering b. Cutting c. Grafting d. All of these 61. In grafting the rooted plant is called the stock. The stem cutting from the donor plant is called a. Transplant b. Scion c. Bud graft d. Root stock 62. Roses can grow successfully if stock and scion are a. Of the related species b. Of different species c. Of different groups d. Of similar class 63. For successful grafting, stock and scion shall be a. Of different species b. Of same species c. Of similar groups d. Of different class 64. Cutting is not suitable for a. Lime b. Sugar-cane c. Oleander d. Tapioca 65. Which one is the reproductive unit having an embryo, reserve food and protective covering a. Spore b. Fruit c. Seed d. Fruitlet 66. In exalbuminous seeds, there is a. Nonformation of endosperm b. Abundant formation of endosperm c. Abundant protein d. Consumption of endosperm during development of seed 67. In exalbuminous seed the food is generally stored in a. Endosperm initially but hypocotyls later on b. Cotyledons c. Endosperm from the beginning d. Testa 68. The seed in which reserve food is present in the perisperm a. Nymphaea b. Coconut c. Onion d. Litchi 69. What are the characteristics of petals? a. Attached to the receptacle b. Known as the corolla c. Produces pollen d. missing in bees pollinated plants
- 7. 70. Most seeds will not germinate until they are in favorable environmental conditions including: a. Temperature b. Water c. Oxygen d. All the above 71. What are siliques? a. Splits along two seams, but the seeds are attached to a central partition b. Splits along two seams c. Splits along one seams d. All the above 72. Which of the following is the correct definition for style? a. Connects the stigma & ovary b. At the top of the pistil c. Swollen base d. All the above 73. A hyaline, bisexual and self-fertilized flower that does not open at all, is a. Chasmogamous b. Apogamous c. Cleistogamous d. Polygamous 74. Axillary buds are used to raise crop of a. Wheat b. Rice c. Groundnut d. Sugarcane 75. Banana plant develops from a. Rhizome b. Seed c. Sucker d. Stolon 76. In a flowering plant archesporium gives rise to a. Only the wall of the sporangium b. Both wall and the sporogenous cells c. Wall and the tapetum d. Only tapetum and sporogenous cells 77. A polygonum type of embryo sac is a. 7-celled and 8-nucleate b. 8-celled and 7-nucleate c. 7-celled and 7-nucleate d. 8-celled and 8-nucleate 78. Allogamy is best favoured by a. Dichogamy b. Dicliny c. Cleistogamy d. Homogamy 79. Dry dehiscent fruits can be extracted by a. Drying b. Maceration c. Polishing d. Threshing 80. Decortication is used for a. Groundnut shelling pod b. Maize c. Bhendi d. Sunflower 81. Wet extraction commonly used on a. Bittergourd b. Rice c. Onion d. Chillies 82. Pre cleaning mainly used to improve a. Vigour b. Viability c. Physical purity d. Genetic purity 83. Pre-cleaning of seeds is called a. Stratification b. Scarification c. Scalping d. Upgrading
- 8. 84. The temperature limit for artificial air drying a. 1000C b. 1100F c. 1100C d. 650F 85. Hard seed coat can be removed using by a. Stratification b. Debearders c. Aspirator d. Scarification 86. Heated air drying limit is a. 1100F b. 1100C c. 980C d. 980F 87. If silica gel absorbs moisture which colour the seed will develop? a. Blue b. Pink c. Red d. White 88. High moistened seed should be dried a. At high temperature b. At low temperature c. Under direct sun d. Low temperature shade dried 89. Oblong sieve is used for grading a. Paddy b. Sorghum c. Maize d. Sunflower 90. Flat and round seeds can be separated by a. Specific gravity separator b. Spiral separator c. Magnetic separator d. Indent cylinder separator 91. What is the top screen size for wheat seed processing a. 7/64” b. 8/64” c. 12/64” d. 14/64” 92. Commonly used fungicide for seed treatment is a. Furadan b. Metaxystox c. Carbendazinam d. Atrazine 93. Which one of the following chemical is used against bacteria? a. Carbendazim b. Mancozeb c. Carboxyl d. Streptomycin 94. Seed propagation is the rule in -------------. a. Cosmos b. Cornflower c. Jasmine d. Gypsophila 95. The area covered for field count is ------------------ in the case of line sowing medium spaced seed crops like chickpea a. 85% b. 75% c. 60-70% d. 60%
- 9. 96. Match the following List I List 2 A. Capitulam 1. Coriander B. Umbel 2. Amaranthus C. Compound umbel 3. Sunflower D. Spike 4. Carrot a. 4 3 2 1 b. 3 2 4 1 c. 2 1 4 3 d. 4 2 1 3 97. Match the following List I List 2 A. Calyx 1. Petals B. Corlla 2. Carpel C. Stigma 3. Androecium D. Anther 4. Sepal a. 4 1 2 3 b. 4 2 1 3 c. 2 1 4 3 d. 3 2 4 1 98. Match the following List I List 2 A. Superior ovary 1. Epigynous B. Interior ovary 2. Hypogynous C. Syncarpous 3. Multiple carpels D. Apocarpous 4. Fused carpels a. 4 1 2 3 b. 3 2 4 1 c. 2 1 4 3 d. 4 2 1 3
- 10. 99. Match the following List I List 2 A. Bisexual 1. Pisillate flower B. Unisexual 2. Perfect flower C. Monoecious 3. Date palm D. Dioecious 4. Arecanut a. 4 1 2 3 b. 2 1 4 3 c. 4 2 1 3 d. 3 2 4 1 100. Match the following List I List 2 A. Andromonoecious 1. B. Gynomonoecious 2. + + C. Trimonoecious 3. + D. Hermaphrodite 4. + a. 4 3 2 1 b. 3 2 4 1 c. 4 1 2 3 d. 2 3 4 1
- 11. Answer keys 1 b 21 a 41 c 61 b 81 d 2 a 22 b 42 b 62 a 82 c 3 c 23 c 43 c 63 b 83 c 4 a 24 c 44 c 64 a 84 d 5 a 25 d 45 d 65 c 85 b 6 d 26 d 46 c 66 d 86 d 7 c 27 d 47 b 67 b 87 a 8 c 28 d 48 d 68 a 88 c 9 d 29 c 49 a 69 b 89 a 10 b 30 a 50 d 70 d 90 b 11 c 31 a 51 a 71 a 91 b 12 d 32 d 52 c 72 d 92 c 13 a 33 c 53 b 73 c 93 d 14 b 34 c 54 b 74 d 94 d 15 a 35 b 55 c 75 c 95 c 16 d 36 a 56 c 76 b 96 b 17 a 37 b 57 d 77 a 97 a 18 c 38 b 58 c 78 a 98 c 19 b 39 d 59 b 79 d 99 b 20 a 40 a 60 c 80 a 100 a