InterviewSolution
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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.
| 1. |
Select the wrong statements :A. In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non-motileB. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamyC. Isogametes are similar in structure, function and behaviourD. Anisogametes differ either in structure, function or behaviour. |
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Answer» Correct Answer - A In Oomycetes, male gamete is smaller and motile, while female gamete is larger and non-motile. |
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| 2. |
Which one of the following is wrongly matched ?A. Spirogyra-Motile gametesB. Sargassum-Chlorophyll cC. Basidiomycetes -PuffballsD. Nostoc - Water blooms |
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Answer» Correct Answer - A Spirogyra has non-motile gametes. |
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| 3. |
Riccia gametophyte develops from spore and ends inA. ThalllusB. CapsuleC. ZygoteD. Spore |
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Answer» Correct Answer - c In Riccia antherozoids may enter into the archegonium and fuse with single egg to form zygote (2n). Which is ending of gametophyte phase. |
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| 4. |
In Riccia, gametophyte starts from spore and ends inA. ZygoteB. SporeC. CapsuleD. Prothallus |
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Answer» Correct Answer - A In Riccia, gametophyte starts from spore and ends in zygote. |
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| 5. |
Adaxial outgrowth from the base of leaves in Selaginella is calledA. StipuleB. LiguleC. TrabaculaeD. Velum |
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Answer» Correct Answer - b A flap like outgrowth is present at the base on adaxial side called ligule. It may be fan-shaped or tongue shaped or lobed. Such leaves are called ligulate. |
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| 6. |
Assertion: Mosses are evolved from algae. Reason: Protonema of mosses is similar to some green algae.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both 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 According to some Botanists, Mosses originated from algae. Protonema of mosses is similar to certain algae. |
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| 7. |
Select the correct match :A. Psilopsida - DryopterisB. Lycopsida - SelaginellaC. Sphenopsida - PterisD. Pteropsida - Equilsetum |
| Answer» Correct Answer - B | |
| 8. |
In which one of the following male and female gametophytes do not have free living independent existenceA. CedrusB. PterisC. FunariaD. Polytrichum |
| Answer» Correct Answer - A | |
| 9. |
How many prothallial cell(s) is/are present in male gametophyte of Pinus ?A. 4B. 1C. 2D. None |
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Answer» Correct Answer - C 2 prothallial cells are present in male gametophyte of Pinus. |
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| 10. |
Assertion: Mosses are used as pollution indicators. ltbr. Reason: They absorb metals.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both 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 Rubbing and Tyler (1979) that air dried mosses can absorb metals. The accumulation of heavy metal cations in mosses enables them to be used as pollution indicators. |
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| 11. |
If you are asked to classify the various algae into distinct groups, which of the following characters you should chosseA. Types of pigments present in the cellB. Nture of stored food materials in the cellC. Structural organization of thallusD. Chemical composition of the cell wall |
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Answer» Correct Answer - a Different type of colour in Algae are due to different pigmentations and it provides a strong base to classify the Algae. |
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| 12. |
Which one of the following statements is wrong.A. Agar-agar is obtained from Gelidium and GracilariaB. Chlorella and Spirulina are used as space foodC. Mannitol is stored food in RhodophyceaeD. Algin and carragen are products of algae |
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Answer» Correct Answer - c Cephaleuros virescene is a member of class chlorophyceae and cause disease red root of tead leaf (Thea sinensis). |
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| 13. |
Which of the following is heterosporousA. EquisetumB. DryopterisC. SalviniaD. Adiantum |
| Answer» Correct Answer - C | |
| 14. |
Select a set of heterosporous genera.A. Marsilea, AzollaB. Salvinia, PteridiumC. Adiantum, AzollaD. Pteris, Lycopodium |
| Answer» Correct Answer - A | |
| 15. |
Female gametophyte in heterosporous ferns isA. ArchegoniumB. ProthallusC. ProtonemaD. Megasporangium |
| Answer» Correct Answer - D | |
| 16. |
Find set of features related to Funaria a. Protonema b. Prothallus c. Gametophore d. Thallus body e. NCC in antheridium f. Haplodiplontic g. True plant organs in sporophyte h. FragmentationA. b , d , e , gB. a , d , f , gC. a ,c , f , g , hD. a , c , f , h |
| Answer» Correct Answer - D | |
| 17. |
Antheridium in ferns isA. multicellular and jacektedB. stalked, hemispherical and borne ventrally in posterior part between rhizoidsC. its jacket hasd 32-48 cellsD. all of the above. |
| Answer» Correct Answer - A | |
| 18. |
Explain briefly the following term with suitable example :- (i) protonema (ii) antheridium (iii) archegonium (iv) diplontic (v) sporophyll (vi) isogamy |
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Answer» (i) Protonema. The gametophytic plant body of a moss and ferns are called protonema. They are haploid, e.g., Moss and Ferns. (ii) Antheridium. Male sex organs of bryophytes and pteridophytes are called antheridia. Each antheridium as a body and a stalk. The body encloses antherozoids covered by jacket. e.g. Marchantia. (iii) Archegonium. Female sex organs of bryophytes and pteridophytes are called archegonia. Each archegonium is differentiated into neck, venter and stalk. The egg is enclosed within the Venter, e.g., Marchantia. (iv) Diplontic. It is a kind of life cycle in which the diploid sporophytic generation is dominant. The gametophytic phase is represented by the single to few called haploid gametophyte. Examples, gymnosperms and angiosperms. (v) Sporophyll. The leaf bearing sporangia is called sporophyll, e.g., ferns. (vi) Isogamy. It is a kind of sexual fusion in which two fusing gametes are morphologically and physiologically similar e.g., chlamydomonas. |
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| 19. |
Jacket of ferm antheridium is composed ofA. 2 cellsB. 3cellsC. 4 cellsD. 5 cells |
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Answer» Correct Answer - b Antheridial Jacket is single layered and 3-celled. |
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| 20. |
The number of male prothallial cells in Selaginella areA. OneB. TwoC. FourD. Nil |
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Answer» Correct Answer - a In male gametophyte the first division leads to formation of a small prothallial cell and a large antheridial cell. |
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| 21. |
In the prothallus of a vascular cryptogam, the antherozoids and egg mature and different time As a result.A. There is high degree of sterilityB. One can conclude that the plant is apomicticC. Self fertilization is preventedD. There is no change in success rate of fertilization. |
| Answer» Correct Answer - C | |
| 22. |
Which of the following is a vascular cryptogamA. MarchantiaB. CedrusC. EquisetumD. Ginkgo |
| Answer» Correct Answer - C | |
| 23. |
Which of the following is heterosporousA. AdiantumB. EquisetumC. DryopterisD. Salvinia |
| Answer» Correct Answer - d | |
| 24. |
The number of antherozoids produced from an antheridium of Selaginella isA. 64B. 256 and aboveC. 25 to 50D. 128 to 256 |
| Answer» Correct Answer - d | |
| 25. |
Which of the following is a vascular cryptogamA. EquistumB. GinkgoC. MarchantiaD. Cedrus |
| Answer» Correct Answer - a | |
| 26. |
In Selaginella, reduction division occurs during the formation ofA. SpermsB. Microspores onlyC. Megaspores onlyD. Both b and c |
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Answer» Correct Answer - d Reduction division or meiosis is called as sporic meiosis and is specirfic type met within pteridophytes. |
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| 27. |
Plant body of Riccia isA. SporophyteB. GametophyteC. AquaticD. Sporophyte |
| Answer» Correct Answer - b | |
| 28. |
A : Microspores and megaspores are produced in same lax in gymnosperms. R : Lax represents compact strobilus which bear microsporophyll and megasporophyll.A. If the Assertion & Reason are true and the reason is the correct. Explanation of the assertion.B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.C. If Assertion is true statement but Reason is false.D. If both Assertion and Reason are false statements. |
| Answer» Correct Answer - D | |
| 29. |
Strobilus found inA. EquistumB. AdiantumC. MarsileaD. Rhynia |
| Answer» Correct Answer - A | |
| 30. |
Assertion. The thallus of Riccia is internally differentiated into an upper photosynthetic region and lower storage region. Reason. The lower storage region is formed from parenchymatous cells.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.C. If Assertion is true but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 31. |
Thallus of Riccia isA. TriploidB. DiploidC. HaploidD. Tetraploid |
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Answer» Correct Answer - c The main plant body of Riccia is gametophytic (n). Which is thallose, i.e., having no true roots, stem and leaves. |
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| 32. |
In which one of the following species of Selaginella, the apex contunues its vegetative growth beyond the formation or strobilusA. S. helveticaB. S. cuspidiataC. S. rupestrisD. None of these |
| Answer» Correct Answer - b | |
| 33. |
Funaria gemetophyte isA. Dioecious and autociousB. Monoecious and autoeciousC. Dioecious and heteroeciousD. Monoeclous and heteroecious |
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Answer» Correct Answer - b Monoeclous means both male and female sex organs are borne on the sage plant body and autoecious means both male and female sex organs are borne on the same plant body and autoeciuous means green photosynthetic. |
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| 34. |
Spores of Riccia are liberated byA. Peristome teeth and setaB. Shrinkage of annulus and explosion of capsuleC. Death and ecay of thallus and external pressure on calyptraD. Xerochasy of elaters. |
| Answer» Correct Answer - c | |
| 35. |
In chlorophyceae and phaephyceae, the type(s) of sexual reproduction is/areA. isogamousB. AnisogamousC. OogamousD. All of the above |
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Answer» Correct Answer - D In chlorophyceae and phaephyceae the type of sexual reproduction is isogameous, anisogamous and oogamous. |
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| 36. |
Largest gemetophyte is found inA. Funaria (Moss)B. SelaginelaC. PinusD. Cycas |
| Answer» Correct Answer - d | |
| 37. |
In phaephyceae, vegetative reproduction takes place byA. FragmentationB. FissionC. BuddingD. All of the above |
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Answer» Correct Answer - A In phaeophyceae , vegetative reproduction takes place by fragmentation. |
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| 38. |
Vegetative reproduction in Cycas occurs byA. Scale leavesB. SporophyllsC. BulbilsD. Fragmentation |
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Answer» Correct Answer - c Bulbils (cresting adventitious buds), which are produced on the stem in the axil of scale leaves. |
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| 39. |
Vegetative reproduction in Funaria takes place byA. Primary protonemaB. GemmaeC. Secondary protonemaD. All the above |
| Answer» Correct Answer - d | |
| 40. |
Acrocarpous, solitary sporagia are found inA. OpuntiaB. CycosC. PinusD. Funaria |
| Answer» Correct Answer - d | |
| 41. |
Why is the trunk (main stem) of Cycas usually thick in the upper part and thin at the base ? |
| Answer» In Cycas and other members of cycadopsida, the trunk is covered with an armour of persistent woody leaf bases. These leaf bases closely cover the stem and fortify it. The leaf boses of the basal portion of stem usually remain wet during the rainly season. They are thus disintegrated and destroyed by microrganisms and peeled off. the naked basal portions of trunk, therefore, become thin as compared to upper part. | |
| 42. |
Assertion: The female cone of Cycas is not true cone. Its formation checks the growth of the stem.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both 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 In Cycas there is no true and compact or properly organised female cone. Megaporophylls are loosely arranged and thus form a loose female strobllus. The growing point of the stem is unaffected by their development and continues its growth through the loose strobilus. |
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| 43. |
Organised female cone is absent inA. EphedraB. PinusC. CycasD. None of these |
| Answer» Correct Answer - C | |
| 44. |
Genera Plantarum was written byA. Engler & PrantlB. Bentham & HookerC. BesseyD. Hutchinson |
| Answer» Correct Answer - B | |
| 45. |
Genera Plantarum was written byA. Benthan and HookerB. HutchinsonC. RendleD. Engler and Prantl |
| Answer» Correct Answer - A | |
| 46. |
Which one of the following is considered important in the development of seed habit Or Seloginella has the character of evolutionary importance. That character isA. Free-living gametophyteB. HeterosporyC. Haplontic life cycleD. Dependent sporophyte |
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Answer» Correct Answer - B Heterospory is important in development of seed habit. |
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| 47. |
Which one of the following is considered important in the development of seed habit Or Seloginella has the character of evolutionary importance. That character isA. HeterosporyB. Haplontic life cycleC. Free - living gametophyteD. Dependent sporophyte |
| Answer» Correct Answer - A | |
| 48. |
Which one of the following is considered important in the development of seed habit Or Seloginella has the character of evolutionary importance. That character isA. seed habit and heterosporous natureB. viviparC. rhizophoreD. spikes. |
| Answer» Correct Answer - A | |
| 49. |
Coralloid roots of Cycas possess a symbiotic algaA. AulosiraB. SpirogyraC. UlothrixD. Anabaena |
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Answer» Correct Answer - d Anabaena with coralloid roots is an example of symbiosis. It helps in `N_(2)` fixation. |
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| 50. |
In Pinus only lower part of oospore is concerned with the development isA. MeroblasticB. PeriblasticC. MesoblasticD. None of these |
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Answer» Correct Answer - a Female cone are morphologically equivalent to long shoot because female cone is 1.8 to 3 cm is `1^(st)` and `2^(nd)` year and 45cm is length and 10cm wide in third year. |
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