1) At the stage of fully turgid cell, the suction pressure will be: a. Equal to wall pressure b. Zero c. Equal to osmotic pressure d. Maximum
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2) ATP synthesis occurs in: a. Chloroplast b. Chloroplast and mitochondria c. Chloroplast, mitochomdria and muclei d. Mitochondria
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3) Bacteria, protozoa and other living plants and animals are: a. Climatic factors b. Edaphic factors c. Biotic factors d. Topographic factors
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4) Baldness in human being is a: a. Sex linked character b. Sex limited character c. Sex-influenced character d. None of the above
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5) Barely is a ______ pollinated crop: a. Often-cross b. Self and cross c. Cross d. Self
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6) Biffin in 1905 announced, that resistance to yellow rust of wheat is governed by ______ gene in crosses: a. Single dominant b. Single recessive c. Double dominant d. Double recessive
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7) Binomial system of Nomenclature means that the name of plant is made up of two words, which designate: a. Family and genus b. Order and family c. Species and family d. Genus and species
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8) Bread wheat is: a. Haploid b. Diploid c. Tetraploid d. Auto-allopolyploid
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9) Bulk population breeding is suitable for: a. Fruit crops b. Vegetable c. Small grains d. Flower crops
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10) Who suggested the imbiitions theory of ascent of sap? a. Sir J.C.Bose b. Sachs c. Strasburger d. Dixon and Jolly
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11) Dallus is: a. An undifferentiated mass of cells b. A gamete c. A tissue d. A modification of leaf
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12) Carolus Linnaeus is credited with introducing the: a. Law of limiting factors b. Law of independent assortment c. Binomial system of nomenclature d. Laws of inheritance
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13) Cauliflower, cabbage, broccoli, kohlrabi and brussels sprouts have been derived from wild cabbage that, still grows in coastal regions of: a. Latin America b. Mesopotamia c. Europe and N. Africa d. South Asia and South Africa
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14) Who is regarded as the father of botany? a. Theofrastus b. Gregor Mendel c. Carolus Linnaeus d. Oswald Tippo
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15) Who is credited with the discovery of mitosis? a. Farmer and Moore b. Huxley c. Flemming d. Robert Hooke
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16) Characteristic feature of xerophytes is: a. Long taproot b. Leaves and stem with thick cuticle c. Sunken stomata d. All of the above
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17) Characteristic feature of the hydrophytes is: a. Reduced protective tissues b. Feebly developed root system c. Spongy stem d. All the above
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18) Chauncey Goodrich was the first _____ to publish a paper dealing with resistance of potatoes to the blight diseases: a. Britisher b. German c. Dutch d. American
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19) China rose is a : a. Herb b. Shrub c. Tree d. Tree
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20) Chromosome numbers in somatic cells of a maize plant are: a. 22 b. 26 c. 14 d. 20
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21) Chromosome which pair at meiotic prophase and are similar size, shape, structure and function are known as: a. Homologous b. Isocentric c. Isochromosome d. Acentric
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22) CIMMYT is located at: a. Miexico b. England c. Spain d. Nigeria
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23) Cliestogamy encourages: a. Self pollination b. Cross pollination c. Apomixes d. Inbreeding depression
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24) Clone in general is: a. Homozygous b. Heterogeneous c. Heterozygous d. None of the above
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25) Commercial banana have ______ instead of 22 chromosomes of ordinary diploid varieties: a. 13 b. 23 c. 33 d. 43
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26) Complementary gene produces phenotypic ratio: a. 3;1 b. 13;3 c. 15;1 d. 9;7
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27) Composites are developed by using: a. Advanced generation seed mixtures obtained from high yielding intervarietal or interracial crosses b. Hybrid directly from intervarietal crosses c. Recurrent selection for specific combining ability d. The hybrid of an inbred with an open-pollinated variety
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28) Conifers are abundant in: a. Tropical zone b. Alpine zone c. Temperate zone d. Subtropical zone
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29) 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
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30) Creation of the world by God is basis of the: a. Theory of eternity of present condition b. Theory of special creation c. Theory of catastrophism d. All the above
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31) Cross between cytoplasmic male sterile x cytoplasmic male fertile: a. Produce sterile F1 b. Produce fertile F1 c. Produce fertile, sterile in 1:1 ratio d. None of the above
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32) Cross of F1 hybrid with either parent is called: a. Test cross b. Single cross c. Back cross d. None of them
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33) Crossing over occurs at: a. Two strand stage b. Four strand stage c. Three strand stage d. None of the above
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34) Cuscuta is: a. Total stem parasite b. Partial stem parasite c. Partial root parasite d. Total root parasite
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35) Cytogenetically, the definitive nucleus is: a. Haploid b. Diploid c. Triploid d. Tetraploid
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36) Date palm is: a. Monoecious b. Dioecious c. Polygamous d. None of the above
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37) Degenerated parts of plants and animals, which do not serve any useful purpose, are known as: a. Un-useful structures b. Vestigial structures c. Essential organs d. Unwanted structures
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38) Despite conspicuous deterioration of maize upon continuous setting, it is more tolerant to inbreeding than: a. Limabean b. Barley c. Alfalfa d. Buckwheat
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39) Details of the kreb's cycle were worked out by the use of: a. Radioactive carbon compounds b. Ultracentrifugation c. Electron-microscopy d. X-ray crystallography
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40) Development and formation of pollen grains in anther of the stamen is known as: a. Pollination b. Fertilization c. Microsporogenesis d. Megasporogenesis
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41) Development of a fruit without fertilization is known as: a. Parthenogenesis b. Polyembrohy c. Polyembrohy d. Apomixes
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42) Who invented first compound microscope? a. Robert Hooke b. Jansen c. Leeuwenhoek d. None of these
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43) Development of seed without-sexual process is: a. Apomixes b. Polyembryony c. Both (a) & (b) d. None of the above
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44) Development of the pollen tube, the seed and the 3n endosperm, double fertilization is characteristic features of: a. Bryophytes b. Pteridophytes c. Gymnosperms d. Angiosperms
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45) Disease reaction is by and large, a process: a. Physical b. Chemical c. Mechanical d. Manual
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46) Disease rsistance in barley is: a. Quantitative characteristics b. Qualitative characteristics c. Both (a) & (b) d. None of the above
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47) DNA exists as a double helix as a result of hydrogen bonding between: a. Sugar molecules b. Phosphate groups c. Nucleohistones d. Nucleosides
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48) DNA polymerase: a. Helps is DNA replication b. Helps in RNA replication c. Helps in protein synthesis d. None of the above
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49) DPD is the index of sucking power and is also known as: a. Suction pressure b. Wall pressure c. Osmotic d. Turgor pressure
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50) During mitotic cell division the total chromosome number: a. Remains the same b. Gets halved c. Gets doubled d. None of them
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