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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Porphyra is a member of classA. PhaeophyceaeB. ChlorophyceaeC. RhodophyceaeD. None of these |
| Answer» Correct Answer - C | |
| 2. |
The presence of pyrenoid is characteristic feature of classA. PhaeophyceaeB. ChlorophyceaeC. RhodophyceaeD. Poaceae |
| Answer» Correct Answer - B | |
| 3. |
In which of the following features, Cycas resembles with angiosperms ?A. Presence of vesselsB. Circinate venationC. Dichotomously branched leavesD. Pollen tube is the carrier of male gametes |
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Answer» Correct Answer - D Cycas resembles with the angiosperm, due to the presence of siphonogamy , i.e. male gametes are carried to the female gamete through pollen tube. Vesselssare present in xylem of angiosperm, while absent in Cycas (gymnosperm). |
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| 4. |
Two statements are given consider them and choose the correct option. Statement I Foot of moss sporophyte is a well organised structure. Statement II. In the capsule of moss, trabaculae connect the hypodermis with the chlorenchymatous region.A. Both the statements are trueB. Both the statements are falseC. Statement I is true and II is falseD. Statement II is true and I is false |
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Answer» Correct Answer - C The trabeculae present in moss capsule connects hypodermis with spore sac. |
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| 5. |
In moss sporophyte, which of the following is present ?A. TrabaculaeB. PeristomeC. ColumellaD. All of these |
| Answer» Correct Answer - D | |
| 6. |
The sporophyte in Funaria isA. the dominant and main phase of the plant bodyB. differentiated into distinct foot, seta and capsuleC. parasite on the gametophyteD. Both (b) and (c ) |
| Answer» Correct Answer - D | |
| 7. |
Which one of the following is an exclusive aquatic species of Riccia ?A. R . fluitansB. R .gangeticaC. R . discolorD. All of these |
| Answer» Correct Answer - A | |
| 8. |
Protonema isA. a fossil pteridophyteB. the juvenile phase of a moss gametophyteC. a part of the sporophyteD. None of the above |
| Answer» Correct Answer - B | |
| 9. |
Protonema isA. Haploid and is found in mossesB. Diploid and is found in liverwordsC. Diploid and is found in pteridophytesD. Haploid and is found in pteridophytes |
| Answer» Correct Answer - A | |
| 10. |
In bryophytes and and pteridophytes, transport of male gametes requiresA. insectsB. birdsC. waterD. wind |
| Answer» Correct Answer - C | |
| 11. |
The product of conjugation in Spirogyra or fertilisation of Chlamydomonas isA. zygosporeB. oosporeC. zoosporeD. carpospore |
| Answer» Correct Answer - A | |
| 12. |
More common type of conjugation in Spirogyra isA. terminalB. indirect lateralC. direct lateralD. scalariform |
| Answer» Correct Answer - D | |
| 13. |
Conjugation in Spirogyra involvesA. morpholoically similar gametesB. physiologically similar gemetesC. physiologically similar gametesD. Both (a) and (c ) |
| Answer» Correct Answer - C | |
| 14. |
In archegonium of Funaria, the number of neck canal cells areA. 2B. 3C. 5D. `8-10` |
| Answer» Correct Answer - D | |
| 15. |
Spirogyral lateral conjugation takes place inA. heterosporous speciesB. homosporous speciesC. heterothallic speciesD. homothallic species |
| Answer» Correct Answer - D | |
| 16. |
Phanerogamae areA. seed plants with evident sex organsB. non-seed plantsC. non-seed plants with hidden sex organsD. None of the above |
| Answer» Correct Answer - A | |
| 17. |
The giant redwood tree (Sequoia sempervirens) is a/anA. angiospermB. free femC. pteridophyteD. gymnosperm |
| Answer» Correct Answer - D | |
| 18. |
The sporophyte of RicciaA. have footB. have setaeC. lack foot and setae bothD. None of the above |
| Answer» Correct Answer - C | |
| 19. |
Which gymnosperm show double fertilisation ?A. CycasB. GnetumC. PinusD. Ephedra |
| Answer» Correct Answer - D | |
| 20. |
The smallest gymnosperm isA. Zamia pigmaeaB. seqoiaC. PineD. Cedrus |
| Answer» Correct Answer - A | |
| 21. |
Assertion Endosperm is haploid in gymnosperm. Reason In Cycas, stem is usually branched.A. Both Assertion and Reason are true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but Reason is true |
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Answer» Correct Answer - C In gymnosperms, endosperm is haploid and develops before fertilisation, while in angiosperms, endosperm is triploid and develops after fertilisation. The stem of Cycas is unbranched and in Zamia, stem is tuberous. |
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| 22. |
The classes of sub kingdom-Phanerogamae areA. dicotyledonsB. gymnospermaeC. monocotyledonsD. All of these |
| Answer» Correct Answer - D | |
| 23. |
Which one of the following statements is wrong ?A. Algin and carrageenan are products of algaeB. Agar - agar is obtained drom Gelidium and GracilariaC. Chlorella and Spirulina are used as space foodD. Mannitol is stored food in Rhodophyceae |
| Answer» Correct Answer - D | |
| 24. |
Which of the following statements is wrong about bryophytes?A. Fertilisation takes place in the presence of waterB. Gemetophytic phase is dominant in life cycleC. Sporophyte is physiologically dependent on gametophyteD. Zygote undergoes meiosis to produce sporophyte |
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Answer» Correct Answer - D In bryophytes, zygote is the beginning of the sporophytic generation. Within venter of the archegonium, the zygote undergoes segmentation and develops without a resting period into a multicellular, undifferentiated structure called embryo. The embryo by further segmentation and differentiation finally develops into a full fledged sporophyte, called sporogonium. Cell of sporogonium undergo meiosis to produce spores. |
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| 25. |
Which of the following statements is wrong ?A. Algae increase the level of dissolved oxygen in the immediate environmentB. Algin is obtained form red algae and carrageenan from brown algaeC. Agar- agar is obtained from Gelidium and GracilariaD. Laminaria and Sargassum are used as food |
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Answer» Correct Answer - B Algin is extracted from brown algae, e.g. Laminaria, etc. It is a hydrocolloid used in shaving creams, jellies, flameproof plastic, etc. Carrageenan is extracted from red algae like Chondrus and used as emulsifier and clearing agent. |
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| 26. |
Non-motile asexual spores formed in Vaucheria areA. aplanosporesB. autosporesC. zoosporesD. hypnospores |
| Answer» Correct Answer - D | |
| 27. |
Which one of the following is a primitive gymnosperm that produces motile sperms, bears ovulate and microsporangiate cones on different plants and has foul-smelling, fleshy seeds ?A. PinusB. CycasC. GinkgoD. Gnetum |
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Answer» Correct Answer - C Cycas and Ginkgo both are primitive gymnosperms with motile gametes. They both bear cones microsporangia and megasporangia on different plants. Ginkgo possess foul smelling seeds not Cycas. |
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| 28. |
Read the statements given below with respect to Riccia and choose the incorrect statements.A. Most of the species are terrestrial except R. fluitans that is aquaticB. Scales of Riccia are unicellularC. Neck of archegonium is made up of 4-6 neck canal cellsD. Fertilisation requires presence of water |
| Answer» Correct Answer - B | |
| 29. |
Select the wrong statementA. Isogametes are similar in structure, function and behaviourB. Anisogametes differ either in structure, function and behaviourC. In oogamous reproduction female gamele is smaller and motile, while male gamete is larger and non- motileD. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy |
| Answer» Correct Answer - C | |
| 30. |
Very small, non-motile, algal spores areA. AutosporesB. aplanosporesC. macrozoosporesD. zoospore |
| Answer» Correct Answer - A | |
| 31. |
Choose the wrong pairA. Hepaticopsida - MarchantiaB. Sporopyte - ColumellaC. Bryopsida - AnthocerosD. Riccia - Biflagellated antherozoids |
| Answer» Correct Answer - C | |
| 32. |
Which of the following match pair is incorrect ?A. Psilophyta - TmesipterisB. Lycophyta - SelaginellaC. Sphenophyta - EquisetumD. Filicophyta - Psilotum |
| Answer» Correct Answer - D | |
| 33. |
The cell wall of algae is chemically composed ofA. hemicellulose, pectins and proteinsB. cellulose, galactans and mannansC. pectin, cellulose and proteinsD. chitin |
| Answer» Correct Answer - B | |
| 34. |
Which statement is incorrect for pteridophytes ?A. Xylem tissue lack true vesselsB. Gametophyte of pteridophyte is autotrophicC. Sperms of pteridophytes are non - motileD. Pteridophytes exhibits hetermorphic alteration of generation |
| Answer» Correct Answer - C | |
| 35. |
In pteridophytes, the dominant phase isA. sporophyticB. gametophyticC. seed phaseD. Both (a) and (b) |
| Answer» Correct Answer - A | |
| 36. |
Alginic acid is found in the cell wall ofA. GigartinaB. LaminariaC. GelidiumD. Scytonema |
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Answer» Correct Answer - B Alginic acid of alginate is found in the cell, walls of sea weeds, such as Laminaria, Macrocycystis, Ascophyllum, etc. |
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| 37. |
The dominant generation in pteridophytes isA. sporophyticB. gametophyticC. zygoticD. None of these |
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Answer» Correct Answer - A The dominant phase in life cycle of pteridophyte is sporophyte (2 n), which is generally herbaceous, rarely woody. The plant body is differetiated into roots, stems and leaves. The plant body is differentiated into roots, stems and leaves. The main plant body of bryophytes is gametophytic, which is idependent. True roots are always absent, but unicellular or multicellualr rhizoids and found. |
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| 38. |
In bryophytes, the sporophytic phase is represented byA. sporesB. antheridiumC. spore mother cellD. egg |
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Answer» Correct Answer - C There are two generation in life cycle of bryophytes . The main plant body is gametophytic. The gametophytic phase starts with the formation of spores, which generats bryophyte thallus. The antheridium ( male sex organ) produces antherozoids and archegonium ( female sex organ ) produces egg, which undergo fertilisation to form zygote. The sporopytic phase start with zygote and ends with reduction division in spore mother cells. |
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| 39. |
Following statements represent comparative account of Pinus and Cycas. I. The whole plant body of boht the plants is sporophytic (2n). II. Pollination in both the plants is carried out by the agency of insects. III. Microspores of Cycas shed at 4- cell stage whereas that of Pinus shed at 3- cell stage. IV. Megasporangium of Cycas is orthotropous whereas that of Pinus is circinotropous. Choose the option having combination of all correct statements.A. II, III and IVB. II and IIIC. Only IVD. Only I |
| Answer» Correct Answer - D | |
| 40. |
The bryophyte of considerable economic importance isA. MarchantiaB. FunariaC. RicciaD. Sphagnum |
| Answer» Correct Answer - D | |
| 41. |
Gametophytic and sporophytic phases are independent inA. pteridophytesB. bryophytesC. gymnospermsD. phaeophytes |
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Answer» Correct Answer - A The pteridophytes exhibit alternation of dominant sporophytic generation with an inconspicuous gametophytic generation. The sporophyte is differentiated into root. Stem and leaves, while the small and inconspicuous gametophyte is independent and autotrophic. |
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| 42. |
The characteristic features of bryophyte are I. dominant gametophytic plant body. II. Dominant sporophytic plant body. III. Requirement of water for fertilisation. IV. Lack of sterile sterile jacket around the sex organs.A. Only IB. I,II,and IIIC. I and IIID. II and IV |
| Answer» Correct Answer - C | |
| 43. |
Which is the predominant phase in the life cycle of the bryophyte?A. GametophyteB. CapsuleC. SetaD. Sporophyte |
| Answer» Correct Answer - A | |
| 44. |
Bryophytes are different than algae inA. having multicellular sporophytic generationB. having no sporophyteC. having zygotic meiosisD. formation of embryo |
| Answer» Correct Answer - D | |
| 45. |
Bryophyte resemble algae due toA. differentiation of plant body into root, stem, leaves and heterotrophic mode of nutritionB. thallus-like plant body , lack of vascular tissue, absence of roots and autotrophic mode of nutritionC. thallus-like plant body, presence of roots and heteroterophic mode of nutritionD. filamentous body, presence of vascular tissue and autotrophic mode of nutrition |
| Answer» Correct Answer - B | |
| 46. |
Due to which of the following, bryophytes and algae resemble each other ?A. Thalloid plant bodyB. No rootsC. No vascular tissueD. All of these |
| Answer» Correct Answer - D | |
| 47. |
Bryophytes are called amphibians of plant kingdom becauseA. their reproductive phase requires waterB. their sex organs are multicellular and jacketedC. they have tracheidsD. All of the above |
| Answer» Correct Answer - A | |
| 48. |
Cycas and ferns resemble each other in possessingA. siphonogamous fertilisationB. presence of vessels and companion cellsC. endosperm and embryo formationD. circinate ptyxis and ramenta |
| Answer» Correct Answer - D | |
| 49. |
Sexual reproduction in liverworts takes place byA. formation of sex organs always on the same thallusB. formation of male and female sex organs always on different thallusC. sexual reproduction is absentD. male and female sex organs may be present on same or different thallus |
| Answer» Correct Answer - D | |
| 50. |
Which of the following is the correct statement ?A. No diploid structure is found in sporogonium of RicciaB. Sporogonium of Riccia is golbular and undifferentiatedC. Sporogonium and spore mother cells of Riccia have chloroplastD. None of the above |
| Answer» Correct Answer - B | |