1) Cell suspension cultures of a. Cinchona produces quinine b. Digitalis lanata produce digitoxin c. Both a and b d. None of these
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2) A device that bombards a callus with DNA coated microscopic metal particles is a. DNA gun b. DNA shooter c. Particle gun d. All of these
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3) Salt tolerant plants are a. Cadabidopsis b. Nemodopsis c. Saltdopsis d. Arabidopsis
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4) Which of these is a true statement? a. Both plasmids and viruses can serve as vectors. b. Plasmids can carry recombinant DNA but viruses cannot c. Vectors carry only the foreign gene into the host cell. d. Only gene therapy uses vector.
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5) Which of these would you not expect to be a biotechnology product? a. Vaccine b. DNA probes c. Proteins d. Steroid hormones
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6) Which of these is incorrectly matched? a. Protoplast-plant cell engineering b. RFLPs-DNA fingerprinting c. DNA polymerase-PCR d. DNA ligase-Mapping human chromosome
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7) Study of relationship of organisms to their environment is a. Ecology b. Palaentology c. Geology d. None of these
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8) All populations within an ecosystem interconnected to one another are known as a. Species b. Family c. Community d. Biomes
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9) Major regional ecological community of plants and animals forms a. Biosphere b. Biomass c. Biomes d. Bioecosystem
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10) The actual location or place where an organism lives is a. Environment b. Biosphere c. Biomass d. Habitat
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11) The role a species plays in a community including behavior and influence is a. Nichon b. Niche c. Autecology d. Profession
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12) Study of a single population's relationship to its environment is called a. Ecology b. Synecology c. Autecology d. Niche
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13) The biosphere covers about a. 8-10 km b. 5-10 km c. 15-30 km d. 16-20 km
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14) Abiotic components include a. Atmosphere b. Hydrosphere c. Lithosphere d. All of these
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15) Which statement is true? a. Producers are heterotrophic organisms b. Consumers are autotrophic organisms c. Fungi and bacteria are decomposers d. Consumers release chemical elements as ions
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16) Sequence of changes in community and its non-living environment over a period of time is a. Niche b. Succession c. Alterations d. Neo-ecology
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17) Plants growing in xeric conditions are called a. Spherophytes b. Mesophytes c. Xerophytes d. Teridophytes
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18) Lichen and algae form a. Climax community b. Pioneers community c. Initiator community d. Seral community
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19) Diverse and stable community at the end of succession is a. Climax community b. Pioneers community c. Top community d. Stable community
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20) Secondary succession starts from a. A bar rock sand b. Clear glacial pool c. From remains of previous ecosystem d. Fire
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21) Hydrosere is a. Secondary succession starting in a pond b. Primary succession starting in a pond c. Primary succession starting on a dry soil d. All of these
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22) Mosses are a. Dermatocarpon b. Permellia c. Tortula d. Both b and c
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23) Wood forests form the a. Pioneers community b. Climax community c. Top community d. Transient community
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24) Disease in living organisms caused by parasites is called a. Parasitism b. Infestation c. Predation d. Infection
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25) Legume plants are the hosts to a. Rhizobium b. Mycorrhiza c. Lichen d. Algae
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26) A dual organism composed of symbiotic association of an alga living within a fungus myceliium is a. Mycorrhiza b. Rhizobium c. Lichen d. Legume
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27) Symbiosis relationship in which only one organism is benefited is a. Symbiosis b. Commensalism c. Mutualism d. Unism
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28) Sharks may have small fish attached to them called a. Rumors b. Romas c. Romosis d. Remoras
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29) Over grazing leads to a. Good pastured lands b. Rocky areas c. Totally barren lands d. Salinity
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30) Nitrogen constitutes about ______ % of atmosphere a. 58% b. 25% c. 10% d. 78%
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31) Oxidation of ammonia or ammonium ions by bacteria in soil is called a. Nitrification b. Ammonification c. Assimilation d. Denitrification
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32) Gross primary production is a. Amount of energy fixed by small plants b. Amount of energy fixed by large plants c. Total amount of energy fixed by all plants d. Primary production minus respiratory loss
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33) Plant biomass is a. Gross primary production b. Net primary production c. Gross primary production minus respiratory loss d. Both b and c
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34) Total solar energy trapped by the producers in an ecosystem is a. 95% b. 20% c. 78% d. 1%
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35) The major unit of ecology is a. Population b. Community c. Ecosystem d. Biome
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36) Eco' part of word ecosystem means a. Family household b. Study of c. Collection of related parts that function as a unit d. Environment
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37) Which of the following is not true for food web? a. Formed from food chain b. Complex than food chain c. Stable than food chain d. Starts with primary consumers
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38) Which one of the following is more tolerant to herbivore a. Grasses b. Trees c. Herbs d. None of these
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39) Which of the following step of nitrogen cycle is not useful for plants a. Ammonification b. Nitrification c. Denitrification d. Both a and c
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