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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.
| 201. |
Monascus purpureus is a yeast ued commercially in the production ofA. Streptpkinase for removing clots from the blood vessels.B. Citric acidC. Blood cholesterol lowering statinsD. Ethanol |
| Answer» Correct Answer - C | |
| 202. |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?A. Diplontic life cycleB. Members of kingdom-PlantaeC. Mode of nutritionD. Multiplication by fragmentation |
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Answer» Correct Answer - D (d) Multicellular fungi, filamentous algae and protonema of mosses all show multiplication by fragmentation. |
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| 203. |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mossesA. Mode of NutritionB. Multiplication by fragmentationC. Diplontic life cycleD. Members of kingdom plantae |
| Answer» Correct Answer - B | |
| 204. |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mossesA. Members of kingdom plantaeB. Mode of NutritionC. Multiplication by fragmentationD. Diplontic life cycle |
| Answer» Correct Answer - C | |
| 205. |
Which one of the following is a correct statementA. In gymnosperms female gametophyte is free-livingB. Anteridiophores and archegoniophores are present in pteridophytesC. Origin of seed habit can be traced in pteridophytesD. Pteridophyte gametophyte has a protonemal and leafy stage. |
| Answer» Correct Answer - C | |
| 206. |
Slect the correct pattern of arrangement of reproductive structures for gymnosperms.A. spores`to`Sporophyll`to`sporangia`to`strobiliB. spores`to`sporangia`to`sporophylls`to`strobiliC. sporangia`to`sporophylls`to`spores`to`strobiliD. spores`to`sporangia`to`strobili`to`sporophylls |
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Answer» Correct Answer - B Gymnosperms are heterosporous, i.e, produce two different kinds of spores- the male (microspores) and the female (megaspores). The spores are borne inside the sporangia. The two types of sporangia (microsporangiaand megasporangia) are borne on special leaf-like structures, called microsporolylls(=stamens) andmegasporoplylls (=carpels) respectively. the sporophylls are usually aggregated in the form of compact structres called cones or strobili the cones are generally unisexual, i.e., the male cones are microsporangiate (pollen cones) and the female cones are megasporangiate (seed cones). |
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| 207. |
In Gracilaria, sexual reproduction isA. IsogamousB. AnisogamousC. OogamousD. Both (1) & (2) |
| Answer» Correct Answer - C | |
| 208. |
Gracilaria and Gelidium are important source ofA. CarrageenanjellyB. IodineC. AgarD. Vitamin B |
| Answer» Correct Answer - C | |
| 209. |
Assertion. Gymnosperms do not produce fruits. Reason. The ovules of gymnosperms are not enclosed within the ovaries.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 | |
| 210. |
The spread of living pteridophytes is limited and is restricted to narrow geographical region becauseA. gametophytic growth needs cool, damp and shadyy placesB. there is requirement of water for fertilisationC. there is absence of stomata in leaf and absence of vascular tissueD. both a and b |
| Answer» Correct Answer - D | |
| 211. |
Assertion : The spread of living pteridophyte is limited and restricted to narrow geographical regions Reason : Prothallus require cool, damp, shady places to grow and water is required for fertilisation.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true and but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
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Answer» Correct Answer - A The spread of living pteridophytes is limited and restricted to narrow geographical regions because prothallus requires cool, damp, shady places to grow and water is required for fertilisation. |
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| 212. |
The evolutionary advanced features of Selaginella are (a) Heterospory (b) Endosporic development of gametophyte (c) Reduced gametophyte (d) Localization of sporangium bearing appendages in strobili (e) Unisexual gametophytes (f) Fertilization with the help of waterA. All are correctB. All except (f) is correctC. All except (e) and (f) are correctD. All except (c ) is correct |
| Answer» Correct Answer - B | |
| 213. |
Heterospory is found in some members of _____and all members of ____A. bryophyta,pteridophytaB. Pteridophyta, BryophytaC. Bryophyta,GrmnospermaeD. Pteridophyta,Spermatophyta |
| Answer» Correct Answer - D | |
| 214. |
Heterospory and ligulate leaves occur inA. SelaginellaB. PteridiumC. FunariaD. Riccia |
| Answer» Correct Answer - A | |
| 215. |
In Lycopodium the antherozoids areA. BiflagellateB. MultiflagellateC. MulticiliateD. Non motile |
| Answer» Correct Answer - A | |
| 216. |
Aquatic fern which is an excellent biofertilizerA. SalviniaB. Azolla pinnataC. PteridiumD. Marsilea |
| Answer» Correct Answer - B | |
| 217. |
Liverworts, hornworts, and mossess together constituteA. PteridophytesB. Lichens and PlantaeC. BryophytaD. Bryopsida |
| Answer» Correct Answer - B | |
| 218. |
The aquatic fern which is an excellent biofertilizer isA. AzollaB. SalviniaC. MarsilaD. Pteridium |
| Answer» Correct Answer - a | |
| 219. |
Peat is formed fromA. FunariaB. SphagnumC. MossessD. Liverworts |
| Answer» Correct Answer - B | |
| 220. |
A well developed archegonium with neck consisting of 4 - 6 rows and neck canal cells , characterisesA. Gymnosperms and flowering plantsB. Pteridophytes and gymnospermsC. Gymnosperms onlyD. Bryophytes and pteridophytes |
| Answer» Correct Answer - D | |
| 221. |
A well developed archegonium with neck consisting of 4-6 rows of neck canal cells,characterisesA. gymnosperms onlyB. bryophytes and pteridophytesC. pteridophytes and gymnospermsD. gymnosperms and flowering plants |
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Answer» Correct Answer - B (b) Archegonium is te flask-shaped female reproductive body of bryophytes and pteridophytes. Archegonium usually consists of a tubular neck and a swollen venter. Neck is made up of 4-6 vertical row of cells and encloses 6-10 neck canal cells in bryophytes and 4 vertical rows in pteridophytes enclosing 1-4 neck canal cells. Venter has 1-2 layer but itt is wall-less in pteridophytes. |
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| 222. |
Four rows and six rows of NCC are found, respectively, inA. Bryophytes and PteridophytesB. Pteridophytes and gymnospermsC. Gymnosperms and angiospermsD. Pteridophytes and bryophytes |
| Answer» Correct Answer - D | |
| 223. |
Phloem of gymnosperms differ from angiosperms inA. having no companion cellsB. having no sieve cellsC. having phloem fibreD. having phloem parenchyma |
| Answer» Correct Answer - A | |
| 224. |
Consider the following statements regarding gymnosperms and choose the correct option. (A) In gymnosperms, the male and female gametophytes have an independent existence (B) The multicullar female gametophyte is retained with in the megasporangium (C) The gymnosperms are hetersoporous of these statementsA. A and B are true but C is falseB. A and C are true but B is falseC. B and C are false but A is trueD. A and C are false but B is true |
| Answer» Correct Answer - d | |
| 225. |
In gymnosperms the pollen chamber representsA. a cell in the pollen grain in which the sperms are formedB. A cavity in the ovule in which pollen grains are stored after pollinationC. An opening in the megagametophyte through which the pollen tube approaches the egg.D. The microsporangium in which pollen grains develop |
| Answer» Correct Answer - b | |
| 226. |
Consider the following statements regarding gymnosperms and choose the correct option I. In gymnosperms, the male and female gametophytes have an independent existence II. The multicellular female gametophyte is retained within the megasporangium III. All gymnosperms are heterosporous. Of these statements :A. I and II are true but III is falseB. I and III are true but II is falseC. II and III are false but I is trueD. II and III are true but I is false. |
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Answer» Correct Answer - D In gymnosperms, the male and female gametophytes do not have an independent existence. |
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| 227. |
Assertion: In gymnosperms, the male and female gametophytes do not have indepenent existance. Reason: They remain within the sporangia retained on the sporophyte.A. a,d and eB. b,c and eC. a,c and dD. b,c and d |
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Answer» Correct Answer - A b and c are incorrect statements Selaginella is a heterosporous pteridophyte Coralloid roots in Cycas have BGA. |
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| 228. |
Describe the important characteristics of gymnosperms. |
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Answer» Important features of gymnosperms: (a) The term gymnosperm refers to plants with naked seeds (gymnos – naked, sperma – seeds), i.e., the seeds of these plants are not enclosed in fruits. (b) The plant-body ranges from medium to tall trees and shrubs. The giant redwood tree Sequoia is one of the tallest trees in the world. (c) The root system consists of tap roots. The coralloid roots present in Cycas are associated with nitrogen-fixing cyanobacteria. (d) The stem can be branched (as in Pinus and Cedrus) or un-branched (as in Cycas). (e) The leaves can be simple (as in Pinus) or compound (pinnate in Cycas). The leaves are needle-like, with a thick cuticle and sunken stomata. These help in preventing water loss. (f) Gymnosperms are heterosporous. They bear two kinds of spores – microspores and megaspores. (g) Flowers are absent. The microsporophylls and megasporophylls are arranged to form compact male and female cones. (h) Pollination occurs mostly through wind and pollen grains reach the pollen chamber of the ovule through the micropyle. (i) The male and female gametophytes are dependent on the sporophyte. (j) The seeds contain haploid endosperms and remain uncovered. |
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| 229. |
Which is/are correct for the ferm Dryopteris ?A. Sporophyte is partially dependent on gametophyteB. Sporophyte is independentC. Gametophyte is independentD. Both B and C |
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Answer» Correct Answer - D Sporophyte and gametophyte are independent in fern Dryopteris/pterodophytes. |
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| 230. |
The prominent phase in the life cycle of bryophytes isA. gametophyteB. sprophyteC. setaD. sporogonium. |
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Answer» Correct Answer - A Bryophytes shows two morphologically distinct heteromosphic generations, i.e., gametophytic and sporophytic generations. Gametophytic generation is the dominant phase of life cycle and in general the term plant body is used to represent this phase. |
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| 231. |
Assertion. The leaves of Funaria are not true leaves. Reason.The leaves of Funaria do not posess axial bud.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 | |
| 232. |
Why the bryophytes could not become successful land plants ? |
| Answer» The land plants remain outside the water and face the adverse environmental conditions. They absorb water from the soil. Under such conditions, a successful land plant must possess deep penetrating root system for absorption of water and minerals, posses aerial foliage for photosynthesis, vascular tissues for conduction, stomata for gaseous exchange, coating of cuticle ans waxes to resist dessicatoin and mechanical tissues for strength. The bryophytes, on the other hand, do not possess all these characters of land plants. Moreover, the successful land plants produce seeds for their survival and multiplication. Therefore, the bryophytes could not become successful land plants. | |
| 233. |
Bryophytes can be separated from algae, because theyA. Possess archegoniaB. Conatain chloroplastC. Are thalloid formsD. Have no conducting tissue |
| Answer» Correct Answer - A | |
| 234. |
Male gametes in angiosperms are formed by the division ofA. Generative cellB. Vegetative cellC. Microspore mother cellD. Microspore |
| Answer» Correct Answer - A | |
| 235. |
The edible green alga rich in protein isA. PorphyraB. ChlorellaC. LaminariaD. Chondrus crispus |
| Answer» Correct Answer - B | |
| 236. |
In biotechnological studies, the alga that is exploited as a rich source of protein isA. SpirogyraB. SpirulinaC. ChlamydomonasD. Scytonema |
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Answer» Correct Answer - b Spirulina viridiame: it is a convoluted cyanophycian alga, which has 60% protein contents. |
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| 237. |
Which one of the following is correctly matched?A. Ginger-SuckerB. Chlamydomonas-ConidiaC. Yeast-ZoosporesD. Onion-Bulb |
| Answer» Correct Answer - D | |
| 238. |
Bryophytes showA. asexual reproduction `&` zygotic meiosisB. asexual reproduction `&` sporic meiosisC. no asexual reproduction but sporic meiosisD. gametophytic dominance and sporic meiosis |
| Answer» Correct Answer - D | |
| 239. |
After fertilisation ovules turn intoA. FruitB. SeedC. ConeD. Embryo |
| Answer» Correct Answer - B | |
| 240. |
Largest gametophyte is found inA. BryophytaB. PteridophytaC. GymnospermD. Angiosperm |
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Answer» Correct Answer - A Largest gametophyte is found in bryophyta. |
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| 241. |
Assertion: Thallophytes are non-vascular, non-archegoniate, and non-cormophytic plants. Reason: Thallophytes lack vascular bundles, archegonia, and differentiated plant body.A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, but Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 242. |
The archegoniate spermatophytes areA. AngiospermsB. BryophytesC. PteridophytesD. Gymnosperms |
| Answer» Correct Answer - D | |
| 243. |
Adiantum is called "walking fern" due toA. Power of locomotionB. Vegetative reproductionC. Motile antherozoitesD. All the above |
| Answer» Correct Answer - B | |
| 244. |
Assertion: Adiantum caudatum is called walking ferm. Reason: It can reproduce by its leaf tips.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 Leaf tips of Adiantum caudatum, develop adventitious buds for vegetative propagation. When leaf tip reaches the ground. It develops into new plant, therefore, it appears that the plant is walking. |
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| 245. |
No Gymnosperms isA. annual and herbaceousB. perennial and herbaceousC. xerophyte and woodyD. tree and shrubby |
| Answer» Correct Answer - A | |
| 246. |
Select the mismatchA. Cycas - DioeciousB. Salvinia - HeterosporusC. Equisetum - HomoporusD. Pinus - Dioecious |
| Answer» Correct Answer - D | |
| 247. |
Select the mismatchA. Pinus-DioeciousB. Cycas-DioeciousC. Salvinia -HeterosporousD. Equisetum-Homosporous |
| Answer» Correct Answer - A | |
| 248. |
Find out the mismatch pairA. Carrageen - Red algaeB. Algin - Brown algaeC. Agar - ChlorellaD. Single celled protein - Spirullina |
| Answer» Correct Answer - C | |
| 249. |
Match column I with column II and select the correct option. A. (a) `rarr` (ii), (b) `rarr` (iv), (c) `rarr` (iii), (d) `rarr` (i)B. (a) `rarr` (iii), (b) `rarr` (i), ( c) `rarr` (iv), ( d) `rarr` (ii)C. (a) `rarr` (ii), (b) `rarr` (iv), (c) `rarr` (ii), (d) `rarr` (i)D. (a) `rarr` (iv), (b) `rarr` (iii), (c) `rarr` (i), (d) `rarr` (ii) |
| Answer» Correct Answer - B | |
| 250. |
Male gametes of bryophytes are :-A. MultiflagellatedB. UniflagellatedC. Non-motileD. Biflagellated |
| Answer» Correct Answer - D | |