1. Who coined the term genetics?
A. T.H. Morgan
B. Hugo de Vries
C. W.L. Johannsen
D. W. Bateson
2. Who coined the term "Phenotype" and "Genotype"?
A. Johannsen
B. W. Batson
C. T.H. Morgan
D. Muller
3. Double helical structure of DNA was given by
A. Jacob and Monod
B. H. Khorana
C. Watson and Crick
D. Swammerdam and Bonnet
4. Who proposed the "Pre formation theory" ?
A. Jacob and Monod
B. Khorana
C. Wolf
D. Swammerdam and Bonnet
5. Theory of Acquired Characters was proposed by
A. Lamarck
B. Wolff
C. Swammerdam and Bonnet
D. Charles Darwin
6. Germplasm Theory was given by
A. Weismann
B. Charles Darwin
C. Lamarck
D. Wolff
7. Jacob and Monod develop the concept of
A. Operon concept
B. Preformation theory
C. Theory of Acquired Characters
D. Double helical structure of DNA
8. The chromosomes were discovered by
A. Moore
B. Strausberger
C. Leeuwenhoek
D. Balbiani
9. In 1919, duplication in Drosophila was first reported by
A. Bridge
B. Morgan
C. Bateson
D. De Vries
10. In 1909, which scientist gave the term epistasis?
A. Bateson
B. Flemming
C. Watson
D. Muller
11. Alternative form of a gene is known as
A. Germ cell
B. Locus
C. Allele
D. Gamete
12. In 1909, who gave the term “Gene”?
A. Johannsen
B. Bateson
C. Sutton
D. Fisher
13. The term "mitosis" was coined by
A. Flemming
B. Moore
C. Sutton
D. J.B.Farmer
14. Which of the following is the longest stage of cell cycle?
A. Metaphase
B. S
C. G1
D. Anaphase
15. Which of the following is the shortest stage of cell cycle?
A. Metaphase
B. S
C. G1
D. Anaphase
16. Dihybrid F2 phenotypic ratio is
A. 3:1
B 9:3:3:1
B. 1:1:1:1
D 1:1
17. In monosomy the chromosome number is:
A. 2n + 1
B. 2n + 2
C. 2n – 1
D. 2n – 2
18. Plastid inheritance in Mirabilis was invented by:
A. Correns
B. Altman
C. Winkler
D. Jenkins
19. Which of the following is developed through mutation?
A. Mohan
B. TR‐8
C. Ganga 101
D. None of these
20. Sugarcane Breeding Institute is located at
A. Kanpur
B. Coimbatore
C. Lucknow
D. Chennai
21. A generative nucleus in the male gametophyte divides _____ to form two male gametes:
A. Mitotically
B. Meiotically
C. Mitotically and Meiotically
D. None of these
22. ______ deteriorates drastically upon inbreeding:
A. Carrot
B. Onion
C. Rye
D. Sunflower
23. ______ is the example of protandry:
A. Maize
B. Pearlmillet
C. Carrots
D. None of these
24. Origin of Species by means of Natural Selection' was given by:
A. Lamarck
B. Linnaeus
C. Charles Darwin
D. Erasmus
25. "Experiments in Plant Hybridization" a paper of G. Mendel was first published in the year:
A. 1905
B. 1787
C. 1866
D. 1896
26. A cell or an organism having one chromosome pair in addition to the normal somatic
chromosome number:
A. Monosomics
B. Nullisomics
C. Tetrasomics
D. Trisomics
27. A character determined by many genes and does not show discrete variation is known as:
A. Qualitative character
B. Oligogenic character
C. Quantitative character
D. Multiple-allelic character
28. A condition in which pollination and fertilization take place in an unopened flower is termed
as:
A. Homogamy
B. Apogamy
C. Polygamy
D. Cleistogamy
29. A crisscross inheritance is shown by:
A. Sex-influenced character
B. Polygamy
C. Sex-linked character
D. Sex-quantitative character
30. A cybrid is:
A. A sex hybrid
B. A hybrid formed by cell fusion
C. A plant produced by cell culture
D. A synonym to hybrid
31. A homozygous line developed by continued selfing in a cross-pollinated crop is termed as:
A. Pure line
B. Inbred
C. Clone
D. Mutant
32. A hybrid is always:
A. Heterozygous
B. Heterogeneous
C. Both of the above
D. Homozygous
33. A maintainer line is:
A. Male fertile and can restore fertility
B. Male sterile but can restore fertility
C. Male sterile but cannot restore fertility
D. Male fertile but cannot restore fertility
34. A male child would be born to parents if:
A. The father is healthier than the mother
B. The mother eats well during pregnancy
C. The genetic composition of the child includes XY combination of chromosomes
D. The genetic composition of the child includes XX combination of chromosomes
35. A male gametophyte in angiosperms contains:
A. One female gamete and two male gametes
B. Two male gametes only
C. Two male gametes and one tube nucleus
D. One male gamete and one tube nucleus
36. A mendelian population means:
A. Self-pollinated population
B. Inbred population
C. Random-mating population
D. Hybrid population
37. A plant bearing both male and female flowers:
A. Dioecious
B. Monoecious
C. Polygamous
D. None of above
38. A plant with 2n = 20 will have how many linkage groups:
A. 20
B. 10
C. 5
D. 30
39. A restorer gene is present in:
A. Nucleus
B. Cytoplasm
C. Both (a) & (b)
D. None of these
40. A stage of meiotic cell division when homologous chromosomes separate and move to different
poles is known as:
A. Metaphase I
B. Anaphase I
C. Telophase I
D. Anaphase II
41. Wind pollination is also known as:
A. Anemophily
B. Entomophily
C. Zoophily
D. Hydrophily
42. Acclimatization is:
A. A process of adjustment by crop plants to a new environment
B. Removal of male parts of a flower
C. Removal of female parts of a flower
D. All of the above
43. An egg or sperm cell in plants is called:
A. Gene
B. Gamete
C. Zygote
D. None of them
44. An embryo sac of angiosperms generally contains:
A. Two nuclei
B. Three nuclei
C. Four nuclei
D. Eight nuclei
45. An organism having the gametic chromosome number of any species is known as:
A. Genome
B. Hybrid
C. Monoploid
D. Haploid
46. An organism with one extra chromosome instead of the normal diploid (2n) is known as:
A. Monoploid
B. Monosomic
C. Trisomic
D. Tetrasonic
47. At the molecular level, point mutations are due to:
A. Destruction of the bases
B. Destruction of the double helix
C. Shifting of a portion of the helix and bases
D. Alterations in the sequence of nitrogenous base in DNA
48. Baldness in human beings is a:
A. Sex linked character
B. Sex limited character
C. Sex-influenced character
D. None of the above
49. Bread wheat is:
A. Haploid
B. Diploid
C. Autohexaploid
D. Auto-allopolyploid
50. Bulk population breeding is suitable for:
A. Fruit crops
B. Vegetable
C. Small grains
D. Flower crops
51. Callus is:
A. An undifferentiated mass of cells
B. A gamete
C. A tissue
D. A modification of leaf
52. Characteristic feature of xerophytes is:
A. Long taproot
B. Leaves and stem with thick cuticle
C. Shrunken stomata
D. All of the above
53. Characteristic feature of the hydrophytes is:
A. Reduced protective tissues
B. Feebly developed root system
C. Spongy stem
D. All the above
54. Chromosomes which pair at meiotic prophase and are similar in size, shape and number of
genes are known as:
A. Homologous
B. Isocentric
C. Isochromosome
D. Acentric
55. CIMMYT is located at:
A. Mexico
B. England
C. Spain
D. Nigeria
56. Cleistogamy promotes:
A. Self-pollination
B. Cross pollination
C. Apomixes
D. Inbreeding depression
57. Clone in general is:
A. Homozygous
B. Heterogeneous
C. Heterozygous
D. None of the above
58. Complementary gene produces phenotypic ratio of:
A. 3;1
B. 13;3
C. 15;1
D. 9:7
59. Composites are developed by using:
A. Advanced generation seed mixtures obtained from high yielding inter-varietal or
interracial crosses
B. Hybrid directly from inter-varietal crosses
C. Recurrent selection for specific combining ability
D. The hybrid of an inbred with an open-pollinated variety
60. Cotton:
A. Is a self-pollinated crop
B. Is a cross pollinated crop
C. Is an often-cross pollinated crop
D. Is an often-self-pollinated crop
61. Cross between cytoplasmic male sterile line and cytoplasmic male fertile line:
A. Produces male sterile F1
B. Produces male fertile F1
C. Produces male fertile and male sterile in 1:1 ratio
D. None of the above
62. Cross of F1 hybrid with either of its parent is called:
A. Test cross
B. Single cross
C. Back cross
D. None of them
63. Crossing over occurs at:
A. Two strand stage
B. Four strand stage
C. Three strand stage
D. None of the above
64. Cuscuta is:
A. Total stem parasite
B. Partial stem parasite
C. Partial root parasite
D. Total root parasite
65. Date palm is a………..plant:
A. Monoecious
B. Dioecious
C. Polygamous
D. None of the above
66. Development of a fruit without fertilization is known as:
A. Parthenocarpy
B. Parthenogenesis
C. Apomixis
D. Budding
67. Development of seed without-sexual process is:
A. Apomixis
B. Polyembryony
C. Both (a) & (b)
D. none of the above
68. DNA polymerase:
A. Helps is DNA replication
B. Helps in RNA replication
C. Helps in protein synthesis
D. None of the above
69. Diffusion Pressure Deficit DPD is the index of sucking power and is also known as:
A. Suction pressure
B. Wall pressure
C. Osmotic pressure
D. Turgor pressure
70. After mitotic cell division the total chromosome number:
A. Remains the same
B. Gets halved
C. Gets doubled
D. None of them
71. Each cell of the female gametophyte is haploid except:
A. Egg cell
B. Synergid cells
C. Antipodal cells
D. Definitive nucleus
72. Each mature anther has:
A. One pollen sac
B. Two pollen sacs
C. Three pollen sacs
D. Four pollen sacs
73. Each megaspore mother cell finally produces:
A. Four megaspores
B. Two megaspores
C. Only one megaspore
D. None of the above
74. Each pollen mother cell produces four haploid cells as a result of:
A. Mitosis
B. Meiosis
C. One mitosis and then meiosis
D. None of the above
75. Each stamen is differentiated into:
A. Filament
B. Anther
C. Connective
D. All of the above
76. Electron microscope was invented by:
A. Jansen
B. Leeuwenhoek
C. Knoll and Ruska
D. None of the above
77. Emasculation is:
A. Removal of immature male parts from a bisexual flower
B. Removal of female parts
C. Removal of mature male parts from a bisexual flower
D. None of the above
78. Embryo-sac is:
A. Male gametophyte
B. Micro-gametophyte
C. Saprophyte
D. Female gametophyte
79. Endosperm is a store house for germinating embryo and it contains:
A. Hormones
B. Vitamins
C. Enzymes
D. All of the above
80. Epicalyx is the characteristic feature of the family:
A. Gramineae
B. Solanaceae
C. Malvaceae
D. Compositeae
81. Sex in plants was discovered by
A. Camerarius
B. Strausberger
C. Darwin
D. Schleiden and Schwann
82. Who founded the cell theory?
A. Robert Hooke
B. Von Mohl and Nageli
C. Schleiden and Schwann
D. Gres and Malpigi
83. Exchange of genetic material takes place between non-sister chromatids of homologous
chromosomes during the:
A. Four stand stage in prophase I
B. Two strand stage in prophase I
C. Metaphase I stage in meiosis
D. Two strand stage in prophase II
84. Flower colour in plants is a:
A. Qualitative character
B. Quantitative character
C. Both of them
D. None of them
85. Flower is specialized:
A. Shoots
B. Leaf
C. Stem
D. Tendril
86. Flowers having both androecium and gynoecium are said to be:
A. Hermaphrodite
B. Unisexual
C. Staminate
D. Pistilate
87. For Hardy - Weinberg law to operate:
A. The population should be large
B. There should be open pollination
C. There should be no selection
D. All the above
88. Formation of new genes takes place due to:
A. Inversion
B. Transduction
C. Transversion
D. Duplication
89. Fusion of the one sperm (male gamete) and definitive nucleus results in the formation of:
A. Endosperm
B. Embryo
C. Saprophyte
D. Zygote
90. Genes are made up of:
A. RNA only
B. DNA only
C. RNA and DNA
D. Proteins
91. Genetics is the study of:
A. Genes
B. Gene interaction
C. Heredity and variation
D. DNA
92. Germplasm means:
A. A breeding method
B. A collection of genetic material
C. A new disease
D. None of the above
93. Ginger and Turmeric are example of:
A. Rhizome
B. Tuber
C. Bulb
D. Corm
94. Mendel is famous for:
A. Propounding the law of inheritance
B. Laws of limiting factors
C. The theory of mutation
D. The discovery of penicillin
95. Heritability may be defined as the:
A. Interaction product of genotype with environment
B. Sum total of hereditary material present in a species
C. Degree of resemblance between the original and the selected plants
D. Proportion of phenotypic variability, which is due to heredity
96. Heterosis is commercially exploited in:
A. Cross pollinated species
B. Often cross-pollinated species
C. Self-pollinated species
D. Vegetatively propagated species
97. Heterosis over the better parent is called as:
A. Relative heteroisi
B. Standard heterosis
C. Pseudoheterosis
D. Heterobeltiosis
98. How many cells will be produced from a cell if the cell divides meiotically?
A. 1
B. 2
C. 3
D. 4
99. Hybrid seeds can be produced through open pollination with the use of:
A. Inbreds
B. Clones
C. Pure lines
D. Male sterile lines
100. ICRISAT deals with:
A. Cotton
B. Maize
C. Millets
D. Wheat
