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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.
| 151. |
Assertion : Fruitcose are well branched leafy lichens. Reason : These lichens are upright and have pendulous organisation and are attached to substratum by a discoid structure.A. 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 the assertion is false but reason is true |
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Answer» Correct Answer - D Fruitcose are well brached shruby lichens with upright and pendulous organization. These are attached to substratum by a discoid structure. Plant body can be divided into prostrate, leafy and lobed thallus. |
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| 152. |
Mycobiont and Phycobiont are found inA. MycorrhizaB. RootC. LichensD. BGA |
| Answer» Correct Answer - C | |
| 153. |
With respect to fungal sexual cycle, choose the correct sequence of eventsA. karyogamy , plasmogamy and meiosisB. Meiosis, plasmogamy and karyogamyC. Plasmogamy , karyogamy and meiosisD. Meiosis, karygamy and plasmogamy |
| Answer» Correct Answer - C | |
| 154. |
The sexual cycle of a fungi does not involve |
| Answer» Correct Answer - C | |
| 155. |
A conidia - like uninulceate male sex cells formed in a structure called spermatiophores isA. spermatiaB. pycnidiumC. trichogyneD. gametangium |
| Answer» Correct Answer - A | |
| 156. |
Yeast is divided under the classA. BasidiomycetesB. DeuteromycetesC. AscomycetesD. Zygomycetes |
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Answer» Correct Answer - C True yeast bear asci which are nto organized into ascocarps. E.g., Schizosaccharomyces, Saccharomyces, Saccharomycodes, , Zygosaccharomyces, Nematospora. Therefore, yeast are classified under ascomycetes. |
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| 157. |
Pseudomycelium is formed inA. YeastB. RhizophoraC. AspergillusD. Synchytrium |
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Answer» Correct Answer - A Yeast reproduces by means of budding. Sometime the bud starts forming new bud before it separates from parent cell. This may result in formation of branched and unbranched chains of bud which is called as pseudomycelium. |
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| 158. |
Yeast like budding of oidia in Mucor/Rhizopus is calledA. PalmellaB. ChantransiaC. TorulaD. Gongrosira |
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Answer» Correct Answer - C In liquid medium, rich in sugar and acidic pH, the hyphae of Rhizopus/Mucor produce small rounded oidia, which multiply by budding like yeast. This budding condition is called torula stage. |
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| 159. |
Common bread mould isA. Rhizopus oryzaeB. Rhizobium speciesC. Rhizopus nedosusD. Rhizopus stolonifer |
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Answer» Correct Answer - D Rhizopus (pin mould or black mould) grows on bread and hence also called bread mould. |
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| 160. |
The highest number of species in the world is represented byA. FungiB. MossesC. LichensD. Algae |
| Answer» Correct Answer - A | |
| 161. |
The scientific name of pink bread mould isA. NeurosporaB. MucorC. RhizopusD. Aspergillus |
| Answer» Correct Answer - A | |
| 162. |
Which one of the following is wrong for fungiA. They are eukaryoticB. All fungi possess a purely cellulosic cell wallC. They are heterotrophicD. They are both unicellular and multicellular |
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Answer» Correct Answer - B (b) In fungi , cell wall contains chitin or cellulose along with other polysaccharides , proteins and lipid . Only in some fungi , e.g. Phytophthora or other oomycetes a purely cellulosic celll wall is present . Hence, only option (d) is wrong , rest of the option are correct . |
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| 163. |
Which one of the following is wrong for fungiA. They are both unicellular and multicellularB. They are eukaryoticC. All fungi posses a purely cellulosic cell wallD. They are heterotrophic |
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Answer» Correct Answer - C Cell wall of fungi is made up of chitin and polysaccharides. |
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| 164. |
Coenogametes are formed inA. AlbugoB. SaccharomycesC. RhizopusD. Alternaria |
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Answer» Correct Answer - C Each progametangium of Rhizopus undergoes division to form gametangium and suspensor. The two gametangia are in contact with each other. They contain multinucleate protoplasts that behave as aplanogamete or coenogamete. |
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| 165. |
The fungus that may cause disease in human beings isA. PucciniaB. AspergillusC. CystopusD. Rhizopus |
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Answer» Correct Answer - B The fungus Aspergillus produces aflatoxins which are carcinogenic and may cause cancer in human beings. |
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| 166. |
Basidiospores are borne on the tip ofA. MyceliumB. AscocarpC. FlagellaD. Aplanospore |
| Answer» Correct Answer - A | |
| 167. |
Yeat is abundantly found inA. moist breadB. horse dungC. organic substances rich in fatsD. organic substances rich in sugar |
| Answer» Correct Answer - D | |
| 168. |
Penicillium is economically improtant because itA. cause pathogenic diseasesB. spoils food materialC. used in preparation of alcoholD. provies antibiotic drugs |
| Answer» Correct Answer - D | |
| 169. |
Asci are formed inA. AscobolusB. SaccharomycesC. PenicilliumD. All of these |
| Answer» Correct Answer - D | |
| 170. |
One of the major compnents of cell wall of most fungi isA. peptidoglycanB. celluloseC. hemicelluloseD. chitin |
| Answer» Correct Answer - D | |
| 171. |
The major difference between an ascospore and a basidiospore isA. ascospore is a sexual spore while basidiospore is asexualB. ascospore is characteristic to basidiomycetes while basidiospore is to zygomycetesC. ascospore are endogenously produced while basidiospores are exogeneously producedD. ascospore is diploid while basidiospore is haploid |
| Answer» Correct Answer - C | |
| 172. |
Which of the following is false for ascomycetes ?A. Ascomycetes involve variously pigmented mouldsB. Thallus of ascomycetes consists of aseptate , unbranched hyphaeC. In Ascoboous , sexual reproduction occurs by spermatisationD. Process of karyogamy is usually delayed to begin a dikaryophase |
| Answer» Correct Answer - B | |
| 173. |
Heterothallism is found in I. Rhizopus II. Mucor III. Puccinia gaminis IV. None of these Choose the correct option .A. Only IIB. I and IIC. I and IIID. Only IV |
| Answer» Correct Answer - B | |
| 174. |
Members of phycomycetes are found in (i). Aquatic habitats (ii). On decaying wood (iii). Moist and damp places (iv). As obligate parasites on plants Choose from the following optionsA. I. Aquatic habitats II. On decaying wood III. Moist and damp places IV. As obigate parasites on plants Choose correct answer from the following options .B. II,III and IVC. I and IVD. All of these |
| Answer» Correct Answer - A | |
| 175. |
Which of the following statement is true about fungi imperfectiA. They do not have sexual phaseB. They include species that prey only on nematodesC. They include toadstools, puffballs and stink hornsD. The include Aspergillus, the fungus used to make soya sauce |
| Answer» Correct Answer - A | |
| 176. |
Assertion : 'Fungi imperfecti' does not show alternation of generation. Reason : The dipliod phase is present in only zygote.A. 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 Fungi imperfecti is that group fo fungi where only the imperfect stage (asexual stages) is present. The only known method of reproduction is by conidia (asexual reproduction). As sexual reproduction is absent in this group therefore diplophase is also absent. |
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| 177. |
Deuteromycetes are known as fungi imperfecti becauseA. Their zygote undergoes meroblastic and holoblastic cleavageB. Only asexual stages are knownC. They have aseptate myceliumD. They are autotrophic |
| Answer» Correct Answer - B | |
| 178. |
Yeast is important source ofA. ProteinsB. RiboflavinC. Vitamin CD. Sugars |
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Answer» Correct Answer - B Yeast from brewing industry is harvested and used as a food. It is rich in protein and vitamin-B (Riboflavin). |
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| 179. |
Assertion : Yeast are the best source of vitamin B complex. Reason : Ashbya gossypil is a filamentous yeast.A. 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 - B The yeast are the best sources of vitamin B complex. Riboflavin `(B_(6))` is obtained from a filamentous yeast Ashby gossypii. |
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| 180. |
Assertion : Morels and Truffles are edible fungi. Reason : Ascocarps are edible.A. 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 - A The fructifications of some ascomycetes, i.e., ascocarps are edible, e.g., morels, truffles. |
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| 181. |
The hyphae of Aspergillus areA. Aseptate and multinucleateB. Septate and multinucleateC. Aseptate and uninucleateD. Sepate and uninucleate |
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Answer» Correct Answer - B The mycelium of Aspergillus consist of branch septate hyphae. Cells of hyphae are multinucleate. |
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| 182. |
Gametangial copulation (conjugation) is common inA. ZygomycetesB. AscomycetesC. PhycomycetesD. Deuteromycetes |
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Answer» Correct Answer - A In gametangial copulation two gametangia come in contact and fuse completely to form a zygote or zygospore. It is found in members of zygomycetes, e.g., Rhizopus and Mucor. |
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| 183. |
Plasmogamy is fusion ofA. Two haploid cells including their nucleiB. Two haploid cells without nuclear fusionC. Sperm and eggD. Sperm and two polar nuclei |
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Answer» Correct Answer - B It is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other. The nuclei of sec cells come close to each other but do not fuse. Thus the resulting cell becomes binucleate or dikaryon. |
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| 184. |
Which of the following is not a type of hypha formed in Rhizopus ?A. Stoloniferous hyphaB. Rhizoidal hyphaC. SpongiophoreD. Conidiophore |
| Answer» Correct Answer - D | |
| 185. |
The occurrence of heterothallism in fungi was demonstrated byA. SchleidenB. PA Michells C. AF BlakesleeD. EJ Butler |
| Answer» Correct Answer - C | |
| 186. |
Chains of buds attached to parental yeast cell formA. pseudogamyB. torula conditionC. pseudomyceliumD. None of these |
| Answer» Correct Answer - C | |
| 187. |
The wall of Rhizopus hypha is composed ofA. CelluloseB. ChitinC. PectinD. Hemicellulose |
| Answer» Correct Answer - B | |
| 188. |
Fusion cell formed as a result of plasmogamy of two gametangia in Rhizopus is calledA. pro-zygosporangiumB. pregametangiumC. progametangiumD. prosporangium |
| Answer» Correct Answer - A | |
| 189. |
In Rhizopus if conjugation fails, gametangia behave as zygospore. It is called asA. ConidiaB. ParthenosporeC. GametangiaD. Sporangiospore |
| Answer» Correct Answer - B | |
| 190. |
Thick - walled sexual spores produced by the fusion of two gametangia areA. aplanosporesB. ascosporesC. zoosporesD. zygospores |
| Answer» Correct Answer - D | |
| 191. |
Life cycle of yeast isA. HaplodiplobionticB. HaplobionticC. DiplobionticD. All of the above |
| Answer» Correct Answer - D | |
| 192. |
Assertion : Claviceps produces lysergic acid. Reason : It is carcinogenic.A. 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 A derivative of ergot known by name of lysergic acid (LSD) is used in experimental psychiatry, as it is a hallucinogen. |
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| 193. |
Aflatoxins are produced byA. BacteriaB. VirusesC. FungiD. Nematodes |
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Answer» Correct Answer - C Aflatoxins are produced by fungi (Aspergillus flavus). |
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| 194. |
Fusion of gametangia in Rhizopus isA. Planogemetic copulationB. Gametangial contactC. Gametangial copulationD. Spermatogamy |
| Answer» Correct Answer - C | |
| 195. |
Conidia of Albugo are arrangedA. IrregularlyB. AcropetallyC. BasipetallyD. Intercalary |
| Answer» Correct Answer - C | |
| 196. |
Claviceps is a member ofA. AscomycetesB. BasidiomycetesC. ZygomycetesD. Phycomycetes |
| Answer» Correct Answer - A | |
| 197. |
Assertion : Aflatoxins are produced by Aspergillus flavus. Reason : These toxins are useful to mankind.A. 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 Aflatoxins are produced by Aspergillus flavus. Contaminated food is the main source of infection. This toxin causes aflatoxicosis which may lead to haemorrhage and disease of liver. |
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| 198. |
Collumella is found inA. Mucor / RhizopusB. SpirogyraC. MossD. Both (a) and (c ) |
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Answer» Correct Answer - D Collumella : It is the structure made up of sterile cells e.g., Mucor/Rhizopus and in moss. |
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| 199. |
Assertion : Deuteromycetes lack sexual reproduction. Reason : Fungi show three type of reproduction asexual, sexual and vegetative.A. 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 - B Sexual reproduction is absent (as the sexual stage is absent) in the artificial group of fungi called fungi imperfecti or deuteromycetes. |
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| 200. |
Which one secretes pheromones for the functionA. Rhizopus for formation of zygosporeB. All fungi for sexual reproductionC. Yeast for matingD. Plants for growth and development |
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Answer» Correct Answer - A In Rhizopus, zygospore formation is induced by the hormones trisporic acid B and C. |
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