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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Mycorrhiza exhibits the phenomenon ofA. AntagonismB. EndemismC. ParasitismD. Symbiosis |
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Answer» Correct Answer - D Mycorrhiza is a symbiotic association of a saprophytic fungus with the roots of higher plants. |
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| 52. |
Assertion : Symbiosis is furnished by mycorrhiza. Reason : In mycorrhiza, symbiosis is established between fungus and algaA. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - C Mycorrhiza represents mutualistic symbiosis between fungus and roots of higher plants. Fungus helps in absorption of minerals and water. Fungus also gets food from plant. |
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| 53. |
Helotism is a term used for the symbiosis ofA. Algae and bacteriaB. Algae and bryophytesC. Algae and pteridophytesD. Algae and fungi |
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Answer» Correct Answer - D Helotism is a form of symbiosis in which one partner benefits more than the other. E.g., Fungus in lichen thallus benefits more than the alga. |
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| 54. |
Fungi can be stained byA. SafranineB. IodineC. LactophenolD. Cotton blue |
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Answer» Correct Answer - D Fungi can be stained with cotton blue. This stain provide blue colour of chitinous cell wall. |
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| 55. |
Litmus is obtained fromA. LichenB. AlgaeC. FungiD. Protozoa |
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Answer» Correct Answer - A Litmus used as acid-base indicator is obtained from Roccela montagnei and Lasollia pastulata. |
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| 56. |
LSD is obtained fromA. ClavatiaB. ClavicepsC. AmantiaD. Trichoderma |
| Answer» Correct Answer - B | |
| 57. |
Early blight and late blight are respectively caused by ........ and ..........A. Alternaria , PhytophthoraB. ustilago, PucciniaC. Albugo , PhytophthoraD. Erysiphe , Phytophthora |
| Answer» Correct Answer - A | |
| 58. |
Columella is a specialized structure found in the sporangium ofA. UlothrixB. RhizopusC. SpirogyraD. None of these |
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Answer» Correct Answer - B The sporangium of Rhizopus is appear to be divide into two region, i.e., Outer fertile sporiferous zone and a central sterile columella. The protoplast of the sporiferous zone cleave mitotically to form dark coloured multinucleate spores. |
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| 59. |
Which of the followig induces sexual reproduction in Mucor/RhizopusA. Indole acetic acidB. Trisporic acidC. Gibberellic acidD. Citric acid |
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Answer» Correct Answer - B The process is initiated by the secretion of trisporic acid which stimulates the formation of special hyphae, called zygophores, from both of the compatible mycelia `(+)` strain and `(-)` strain. |
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| 60. |
Which one of the following group of fungi is sometimes known as 'fungal waste basket'A. PhycomycetesB. AscomycetesC. BasidiomycetesD. Deuteromycetes |
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Answer» Correct Answer - D Duteromycetes is also known as fungal waste basket because its lack perfect sexual stage. |
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| 61. |
There exists a close associatin between the algae and the fungus within a lichen. The fungusA. Fixes the atmospheric nitrogen for the algaB. Provides protection, anchorage and absorption for the algaC. Provides food for the algaD. Releases oxygen for the alga |
| Answer» Correct Answer - B | |
| 62. |
Which of the following is not correctly matchedA. Root knot disease-Meloidogyne javanicaB. Smut of bajra - Tolysporium penicillariaeC. Covered smut of barley - Ustilago nudaD. Late blight of potato - Phytophthora infestans |
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Answer» Correct Answer - C Covered smut of barley is caused by Ustilago hordei. |
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| 63. |
Fruiting bogyd in Penicillium is known asA. CleistotheciumB. apotheciumC. peritheciumD. pycnidiuim |
| Answer» Correct Answer - A | |
| 64. |
All fungi can be called asA. HeterotrophsB. AutotrophsC. SaprophytesD. Parasites |
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Answer» Correct Answer - A Heterotrophs : Fungi (lack chlorophyll) obtain their nutrition from the extracellular digestion and absorption of the digested material such mode of nutrition is called heterotrophic and the organism called heterotrophs. |
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| 65. |
Which of the following is famous mycologist of indiaA. P.MaheswariB. M.O.P. IyengarC. K.SharmaD. Sadasivan |
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Answer» Correct Answer - D T.S Sadasivan work on physiology of infection by Fusarium. Other famous Indian mycologists are K.C. Mehta, B.B. Mundkar and C.V. Subramaniyam. |
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| 66. |
The disease which occur at irregular intervals and locations are known asA. Epiphytotic diseasesB. Endemic diseasesC. Sporadic diseaseD. Epidemic diseases |
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Answer» Correct Answer - C Sporadic disease occurs occasionally at irregular intervals in fewer area and only few plants in a locality are infected, e.g., Blotch disease of cucumbers, angular leaf spot of cotton. |
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| 67. |
Parasexuality is involved withA. Fusion of gamete and protoplastB. Fusion of male gamete with secondary nucleusC. Fusion of protoplastD. Fusion of male and female gamete |
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Answer» Correct Answer - C Parasexuality is related with protoplast fusion and found in fungus. |
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| 68. |
Parasexuality was `I^(st)` discovered inA. BacteriaB. VirusC. FungiD. None of these |
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Answer» Correct Answer - C Parasexuality was first discovered by Pontencorvo and Roper (1952) in a fungus Aspergillus nidulans. Parasexuality help in recombination without meiosis and fertilization. |
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| 69. |
Phytoalexins are secreted by plants in response to fungal reaction. These compounds are generallyA. ProteinsB. GlycoproteinsC. Phenolic compoundsD. Lipids |
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Answer» Correct Answer - C Phytoalexins are phenolic compound produce in the host cell for defense in response to fungal infection (Muller and Borger, 1940). These chemicals inhibit growth of the parasite. |
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| 70. |
Riboflavin can be commercially produced fromA. PenicilliumB. Ashbya gossypiiC. Gibberella zeaD. None of these |
| Answer» Correct Answer - B | |
| 71. |
Motile sperms are absent inA. RhizopusB. FunariaC. FernD. Cycas |
| Answer» Correct Answer - A | |
| 72. |
Which of the following option consists of all Deuteromycets ?A. Fusarium , Colletotrichum , helminthosporiumB. Cercospora , Trichoderma , PenicilliumC. Aspergillus , puffballs ,MucorD. Peronospora , Pythium |
| Answer» Correct Answer - A | |
| 73. |
Most of lichens are composed ofA. red algae and ZygomycetesB. green algae and PhycomycetesC. blue-green algae and OomycetesD. blue-green algae and Basidiomycetes |
| Answer» Correct Answer - D | |
| 74. |
Sclerotia extract of ............. fungus produce a powerful hallucinognic drug LSD and drug ergotine .A. Calviceps purpureaB. Aspergillus flavusC. AgaricusD. All of these |
| Answer» Correct Answer - A | |
| 75. |
Ergotine drug is derived fromA. Claviceps purpureaB. Sclerospora graminicolaC. Cannabis sativaD. Papaver somniferum |
| Answer» Correct Answer - A | |
| 76. |
What is VAMA. EndomycorhizaeB. EctomycorhizaeC. BothD. None |
| Answer» Correct Answer - A | |
| 77. |
VAM representsA. Saprophytic fungiB. Symbiotic fungiC. Saprophytic bacteriaD. Symbiotic bacteria |
| Answer» Correct Answer - B | |
| 78. |
Aflatoxicosis of poultry is caused byA. A.flavusB. A.fumigatusC. Candida albicansD. Rhizopus |
| Answer» Correct Answer - A | |
| 79. |
During the formation of heterokaryonA. meiosis is retardedB. karyogamy is retardedC. plasmogamy is retardedD. spores does not geminate |
| Answer» Correct Answer - B | |
| 80. |
Items in which of the following paring are unrelatedA. Ascomycetes - AscogoniumB. Conidiophore- SterigmataC. Basidiocarp - ArchegoniumD. Ascocarp- Ascus |
| Answer» Correct Answer - C | |
| 81. |
Asci are formed inA. AscobolusB. SaccharomycesC. PenicilliumD. All of the above |
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Answer» Correct Answer - D Ascobolus, Saccharomyces and Penicillium belong to ascomycetes. |
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| 82. |
Choose the wrong statementsA. Neurospora is used in the study of biochemical geneticsB. Morels and truffles are poisnous mushroomsC. Yeast is unicellular and useful in fermentationD. Penicillium is multicellular and produces antibiotics |
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Answer» Correct Answer - B Morel and truffles are edible and members of Ascomycetes in fungi. |
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| 83. |
A harmful lichen isA. LobariaB. CladoniaC. UsneaD. Rocella |
| Answer» Correct Answer - C | |
| 84. |
Which of the following have cells that imitate parenchyma of higher plants ?A. SclerotiaB. RhizomorphC. PseudoparenchymaD. Prosenchyma |
| Answer» Correct Answer - C | |
| 85. |
An association between roots of higher plants and fungi calledA. lichenB. fernC. mycorrhizaD. BGA |
| Answer» Correct Answer - C | |
| 86. |
Which one is the wrong pairing for the disease and its causal organismA. Late blight of potato - Alternaria solaniB. Black rust of wheat - Puccinia graminisC. Loose smut of wheat - Ustilago nudaD. Root-knot of vegetables-Meloidogyne sp |
| Answer» Correct Answer - A | |
| 87. |
In Rhizopus, septate and uninucleateA. Branched, septate and multinucleateB. Branched, aseptate and multinucleateC. Unbranched, aseptate and multinucleateD. Unbranched, septate and coenocytic |
| Answer» Correct Answer - B | |
| 88. |
In Mucor, zygospore germinates through the formation ofA. msiosporesB. mitosporesC. zoosporesD. planospores |
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Answer» Correct Answer - a (a) In Mucor , the sexual reproduction occurs by the union of compatible complementary gametangia which develops into zygosporangium . Zygosporangium contains single zygospores where meiosis occurs and meiospores and formed . Meiospores from haploid mycelium after germination. |
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| 89. |
The cell wall of fungi is made up ofA. ChitinB. CelluloseC. PectinD. Suberin |
| Answer» Correct Answer - A | |
| 90. |
Which statement about lichen is true ?A. The fungus is protected by a network of algal filamentsB. Algal cells supply food to the fungal componentC. The algal component is parasitic on fungusD. Lichens always need organic substratum for growth |
| Answer» Correct Answer - B | |
| 91. |
The correct match pair isA. Puffball -PolyporusB. Rusts- UstilagoC. Mushroom - LycoperdonD. Toad stool - Amanita |
| Answer» Correct Answer - D | |
| 92. |
Yeast is used in the production ofA. ethyl alcoholB. fumaric acidC. leatherD. rubber |
| Answer» Correct Answer - A | |
| 93. |
The reduction division in the life cycle of Rhizopus occursA. At the time of germination of zygosporesB. During the formation of germ sporangiumC. During asexual reproductionD. During the formation of gametangium |
| Answer» Correct Answer - A | |
| 94. |
Which one is wrong statementA. Mucor has biflagellate zoosporesB. Haploid endosperm is typical feature of gymnospermsC. Brown algae have chlorophyll a and c and fucoxanthinD. Archegonia are found in bryophyta, pteridophyta and gymnosperms |
| Answer» Correct Answer - A | |
| 95. |
For Mucor zygospore isA. Thick walled resting sporeB. Haploid in structureC. Result of asexual reproductionD. Germinates to form zoospores |
| Answer» Correct Answer - A | |
| 96. |
Cladonia rangifernia is a/anA. algaeB. lichenC. fungusD. angiosperm |
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Answer» Correct Answer - b (b) Cladonia rangiferina is reindeer moss. It is a fructicose lichen . It is used as food for reindeer , carbon , musk ox and other wild animals of the arctic tundra zone. |
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| 97. |
If food sources begin to run out , hyphae respond by making spores . Why ?A. Spore production attracts animals , which can be used to transport the fungi to an area where more food is availableB. Fungi change feeding mechanisms once food can no longer be absorbed and the spore production is a by product of this changeC. Spore production is favoured by natural selection when hyphae are under nutritional stressD. Spore production allows fungi to harvest food particles that are floating in the air |
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Answer» Correct Answer - C (c) Hyphal cells grow utilising the food source , but with the depletion of food source , it enters unfavourable period and respond to it by producing spores . |
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| 98. |
Scientific name of fission yeast isA. Saccharomyces ludwigiiB. Schizosaccharomycs octosporusC. Saccharomyces octosporusD. Both (a) and (c) |
| Answer» Correct Answer - B | |
| 99. |
The incorrect match pair isA. Predacious fungi - DactylellaB. Damping off disease - PythiumC. Polyzyme - PucciniaD. Neurospora - Drosophila of plant kingdom |
| Answer» Correct Answer - C | |
| 100. |
Choose the incorrect statementA. Sclerotia can survive in unfavourable conditionB. Phytophthora infestans is a facultative saprophyteC. Synchytrium possess holocarpic vegetative bodyD. Basidiospores and ascospores are binucleate spores |
| Answer» Correct Answer - D | |