1) The advantage/s of fire: a. Reduction of biotic thurst b. Destruction of diseased plants c. Both (a) & (b) d. None of these
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2) Odum did not recognise the following relationship as a positive interaction: a. Commensalism b. Protoco-operation c. Mutualism d. Antibiosis
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3) The zone of soil showing microbial activity around the roots of higher plants is called: a. Rhizosphere b. Rhizoplane c. Soil microflora d. All of these
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4) The term symbiosis was proposed by: a. Mc Dougal b. Warming c. Odum d. de Bary
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5) The device or structure where plants are grown in a controlled environment: a. Culture chamber b. Inoculation chamber c. Phytotron d. All of these
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6) When one population is harmed and the other remains unaffected the relationship is called: a. Amensalism b. Predation c. Protoco-operation d. Parasitism
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7) Plants growing in oxygen deficient soils possess: a. No roots b. Longer roots system c. Aerial roots system d. Shallow root system
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8) The relationship between the alga Cladophora and the snail shell on which it grows corresponds to: a. Commensalism b. Predation c. Neutralism d. Mutualism
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9) The proto co-operation is also called: a. Non-obligatory mutualism b. Non-obligatory commensalism c. Facultative predation d. Facultative parasitism
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10) As a result of fire, there is destruction of the following components of soil: a. Litter b. Organisms c. Inorganic matter d. All of these
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11) The following relationship does not correspond to mutualism: a. Zoophily b. Zoochory c. Epiphytism d. Mycorrhiza
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12) The serotinous cones show: a. In situ seed germination b. Longer viability c. early cone separation d. All these characters
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13) When cane plants grown in the forest, they scamble over other vegetation and this corresponds to: a. Commensalism b. Competition c. Exploitation d. None of these
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14) As an adaptation to fire, some plants produce lignotubres which are: a. Borne on the leaves b. Borne underground c. Present on the main stem d. Suspended from the branches
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15) The interspecific competition is also called: a. Interference competition b. Scramble competition c. Allelopathy d. Synnecrosis
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16) The relationship between the alga Microcystis and the surrounding fauna corresponds to: a. Amensalism b. Parasitism c. Predation d. Exploitation
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17) The most interfering biotic components are: a. Birds b. Herbivores c. Hunters d. Human beings
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18) Those chemicals, which are released by one organism but they destroy the other organism are precisely called: a. Allomones b. Allelochemics c. Kairomones d. Depresants
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19) Which of the following plants does not show predation? a. Darlingtonia b. Viscum c. Both (a) & (b) d. Cephalotus
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20) Those chemicals which are produced by plants and affect other plants are broadly called: a. Depresants b. Allomones c. Allelochemics d. Kairomones
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21) The type of relationship where weaker partner is benefitted and stronger remains unaffected is sometime called: a. Allotropy b. Allelopathy c. Synnecrosis d. Allolimy
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22) Mark the hyperparasite: a. Thesium b. Tape worm c. Bacteria d. Balanophora
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23) Useful adaptation of hydrophytes is: a. Large leaves b. Decrease in mechanical tissue c. Large mechanical tissue d. Increase in aerenchyma
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24) The ecologically fixed and genetically irreversed component of species is called: a. Ecotone b. Ecological equivalents c. Ecotype d. None of these
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25) More than 70% of world's freshwater is contained in: a. Polar ice b. Greenland c. Antarctica d. Glaciers and Mountains
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26) Study of relationship between communities and environment is called: a. Autecology b. Ethology c. Ecology d. Syncology
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27) Possibilities of presence of coal in a particular area can be guessed by the study of: a. Economic Botany b. Ecology c. Pollen analysis d. Mining the area
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28) MAB stands for: a. Man and biology programme b. Man and biosphere programme c. Mammals and biosphere programme d. Mammals and biology programme
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29) In whch region the jiicy fruits are found? a. Desert b. Hills c. Plains d. Sea
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30) During adverse season, thermophytes survive by: a. Bulbs b. Corms c. Rhizomes d. Seeds
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31) Which one has feebly developed root system and numerous air cavities? a. Xerophytes b. Halophytes c. Hydrophytes d. Mesophytes
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32) Reduction of mechanical and vascular tissue and poor roots are found in: a. Hydrophytes b. Xerophytes c. Halophytes d. None of these
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33) Plants die from prolonged water logging because: a. Soil nutrients become very dilute b. Root respiration stops c. Nutrients leach down due to excessive water d. Cell sap in plant becomes too dilute
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34) Sxerophytes are generally found in: a. Desetts b. Water c. Hills d. Water bank
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35) Relative to shoots, the roots can be very massive in plants of: a. Deserts b. Lakes and ponds c. Mixed temperate forests d. Mixed tropical forests
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36) Endemic plants are those which grow in: a. Fresh water lakes b. Shady places c. Tissue of other plants d. Geographically limited areas
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37) Plants of salty seashore wetlands are called: a. Halophytes b. Heliophytes c. Hydrophytes d. Saprophytes
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38) Unutilized place for the growth of flora (vegetation) is: a. Dark cave b. Pond c. River bank d. Saline water
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39) The average amount of CO2 in atmosphere is: a. 0.30% b. 0.00% c. 3.00% d. 0.03%
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40) Stratification is most complex in: a. Tropical forest b. Deciduous forests c. Savannah d. Both (a) and (b)
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41) Eichhornia cressipes is a: a. Desert plant b. Parasite c. Water plant d. Terrestrial plant
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42) Mycorrhiza is the phenomenon of: a. Antagonism b. Parasitism c. Endemism d. Symbiosis
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43) Which of the following does not have stomata? a. Hydrophytes b. Submerged hydrophytes c. Xerophytes d. Mesophytes
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44) Excessive aerenchyma is characteristic of: a. Hydrophytes b. Xerophytes c. Mesophytes d. Heliophytes
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45) A0 layer of soil contains a. Mineral soil b. Litter c. Unweathered material like rock d. None of the above
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46) Which of the following is not a angiosperm? a. Chara b. Hydrilla c. Lotus d. Water lettuse
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47) Water-logged condition will quickly occur in which type of soil? a. Sand b. Loam c. Graved d. Clay
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48) In water logged soil plants cannot grow properly because the soil is: a. Physiologically wet b. Physologically dry c. Physically dry d. None of the above
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49) Water pores are found in which of the following plants? a. Xerophytes b. Mesophytes c. Hydrophytes d. Halophytes
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50) Plants, such as Prosopis, Acacia, and Capparis represent examples of tropical: a. Grasslands b. Evergreen forests c. Deciduous forests d. Thorn forests
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