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.
| 251. |
Plant body of liverwords isA. Thalloid in PorellaB. Thallooid in MarchantiaC. Leafy in MarchantiaD. More than one option is correct |
| Answer» Correct Answer - B | |
| 252. |
Ecologically the most important moss isA. SphagnumB. FunariaC. PolytrichumD. Pogonatum |
| Answer» Correct Answer - A | |
| 253. |
Select the option that includes liverworts only.A. Riccia, MarchantiaB. Riccia, FunariaC. Polytrichum, MarchantiaD. both a and c |
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Answer» Correct Answer - A Funaria and Polytrichum are mosses while Riccia and Marchantia are liverworts. |
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| 254. |
Female reproductive part of bryophytes isA. AntheridiumB. OogoniumC. ArchegoniumD. Sporangium |
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Answer» Correct Answer - c Female sex organ is called archeagonium which is falsk shaped with a tubular neck and a swollen venter. |
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| 255. |
A bryophyte which harbours a nitrogen fixing blue-green alga in its thallus isA. PogonatumB. RicciaC. MarchantiaD. Anthoceros |
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Answer» Correct Answer - d Thallus of Anthoceros shows symbiotic association with a nitrogen fixing blue green alga i.e., Nostoc. |
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| 256. |
Vegetative propagation by Gemma occurs inA. RicciaB. MarchanitaC. SphagnumD. Funaria |
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Answer» Correct Answer - B Vegetative propagation by Gemma occurs in Marchantia. |
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| 257. |
The sporangia of eusporangiate fernsA. Possess a single layer of wall cellsB. Produce very few sporesC. Originate from a group of initial cellsD. Dehisce at the region of a well-defined stomium |
| Answer» Correct Answer - C | |
| 258. |
Fern prothallus isA. HomothallicB. HeterothallicC. HeterotrophicD. Heteromorphic |
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Answer» Correct Answer - a Fern prothallus bears male and female sex organs both. |
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| 259. |
Phycology is the study ofA. AlgaeB. FungiC. BacteriaD. All the above |
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Answer» Correct Answer - a The study of algae is called algalogy or phycology (Gr. Phykos=algae) and its expert as phycologist algalogist. |
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| 260. |
Sporangia and spore bearing leaf in ferm is called as Or New leaf of ferms is calledA. RamentumB. SorusC. IndusiumD. Sporophyll/Frond |
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Answer» Correct Answer - d On sprophytlls eitehr on dorsal or on ventral side bear sporangium e.g., Pteris, Dryopteris etc. Leaves are megaphylls showy featehr like and called fronds. |
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| 261. |
Whi is popularly known as the "Father of Phycology"A. FritschB. PapenfusC. SmithD. Morris |
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Answer» Correct Answer - a F.E. Fritsch (1935) divided algae into following eleven classes in his book "Structure and Reproduction of the Algae", mainly on the basis of pigmentation, reserve food and flagellation, thallus structure, modes of reproduction and life cycles and he is known as father all algae. |
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| 262. |
The plants that are used for medicinal purposes and as soil binders.A. BryophytesB. LichensC. PteridophytesD. Gymnosperms |
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Answer» Correct Answer - C The plants that are used for medicinal purposes and as soil binders are pteridophytes. |
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| 263. |
Sporangia bearing leaves in Pteridophytes are calledA. sporophyllsB. megaphyllsC. frondsD. sorus |
| Answer» Correct Answer - A | |
| 264. |
Assertion: Spermatangium of red algae bears trichogyne. Reason: Trichogyne.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 - d The carpogonium (female sex organ) in Nemalion, one of the simplest red alga, consists of a swollen basal part containing the female nucleus and an elongated terminal hair-like structure called the trichogyne. During fertilization the spermatium (male gamete) discharges its contents into the latter. the spermatium nucleus migrates downwards to fuse with the egg nucleus in the basal swollen part of the carpogonium. soon after fertilization the trichogyne shrivels. |
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| 265. |
Which of the following are heterosporous pteridophytes ?A. Selaginella and SalviniaB. Marsilea and AzollaC. Salvia and SalviniaD. Both A and B |
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Answer» Correct Answer - D Selaginella, Salvinia, Marsilea and Azolla are heterosporous pteridophytes. Salvia is a heterosporous angiosperm. |
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| 266. |
In ferm, sex organs are found onA. ProtonemaB. ProthallusC. SporophyteD. Sporophyll |
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Answer» Correct Answer - B In fern, sex organs (antheridia and archegonia) are found on prothallus. |
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| 267. |
The sporophytes bear sporangia that are subtended by leaf-like appendages calledA. StrobiliB. ConesC. SporophyllsD. Both A and B |
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Answer» Correct Answer - C The sporophytes bear sporangia that are subtended by leaf-like appendages called sporophylls. |
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| 268. |
In liverworts, how many rows of leaf-like appendages are present on the stem-like structure ?A. 1B. 2C. 3D. 4 |
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Answer» Correct Answer - B In liverworts 2 rows of leaf-like appendages are present on the stem-like structure |
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| 269. |
Sporophytes are photosynthetic inA. GymnospermB. AngiospermC. BryophytaD. Pteridophyta |
| Answer» Correct Answer - D | |
| 270. |
All algae possessA. chl a and bB. chl a,carotenes and phycobilinsC. chl b and carotenesD. chl a and carotenoids |
| Answer» Correct Answer - D | |
| 271. |
Sometime prothallus of fern give rise to a fern plant. It is an example ofA. ApsoporyB. ParthenogenesisC. ParthenocarpyD. Apogamy |
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Answer» Correct Answer - d Apogamy: Origin of haploid plant (rare) in pteridophytes e.g., from prothallus cells. |
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| 272. |
Choose the correct statement.A. Algae show embryo stageB. Algae show only haplontic life cycleC. Algae are plants as they possess cell wall, chl a and starch food.D. all of the above |
| Answer» Correct Answer - C | |
| 273. |
Phycoreythrin pigment is found inA. Green algaeB. Red algaeC. Brown algaeD. All of the above |
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Answer» Correct Answer - B Phycoerythrin pigment is found in Red algae. |
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| 274. |
Match the columns I and II, and choose the correct combination from the options given `{:(,"Column-I",,"Column-II"),("(a)","Chlorophyta","(i)","Equisetum"),("(b)","Lycopsida","(ii)","Chara"),("(c)","Phaeophyta","(iii)","Selaginella"),("(d)","Sphenopsida","(iv)","Ectocarpus"):}`A. (a)-(ii),(b)-(iii),(c)-(iv),(d)-(i)B. (a)-(iv),(b)-(i),c-(ii),d-(iii)C. (a)-(ii),(b)-(iii),(c)-(i),d-(iv)D. (a)-(iv),(b)-(i),(c)-(iii),(d)-(ii) |
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Answer» Correct Answer - A `{:("Chlorophyta","Chara"),("Lycopsia","Selaginella"),("Phaeophyta","Ectocarpus"),("Sphenopsida","Equisetum"):}` |
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| 275. |
Assertion: Pyrenoids may or may not be surrounded by a sheath of starch plates in algae. Reason: In higher plants, these are replaced by amyloplasts.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 - B | |
| 276. |
Which pteridophyte is called as horse-tailA. EquisetumB. LycopodiumC. MarsileaD. Seloginella |
| Answer» Correct Answer - a | |
| 277. |
Most primitive members in which roots not present in Or Which of the following is a fossil pteridophyteA. PsilotumB. RhyniaC. LycopodiumD. Seloginella |
| Answer» Correct Answer - b | |
| 278. |
Cycas circinalis is a source ofA. ResinB. TimberC. Essential oilD. Strach (Sago) |
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Answer» Correct Answer - d A starch called sago is obtained from the path of cycas. That so cycas is called sago palm. |
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| 279. |
Study of Algae is calledA. phycologyB. phytologyC. mycologyD. phenology |
| Answer» Correct Answer - A | |
| 280. |
A typical gymnospermous plant has 8 chromosomes in leaf cells. What will be number of chromosomes in the cells of its gametophyteA. 16B. 8C. 4D. 24 |
| Answer» Correct Answer - c | |
| 281. |
Study of algae is calledA. PhycologyB. MycologyC. AlgologyD. Both A and C |
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Answer» Correct Answer - D Study of algae is called phycology or algology. |
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| 282. |
If in Funaria, the leaf has eight chromosomes, the structrue with 16 chromosomes will beA. ProtonemaB. RhizoidsC. Capsule and setaD. All above |
| Answer» Correct Answer - C | |
| 283. |
The dominant photosynthetic phase in the life cycle of pteridophyta is equivalent to theA. Gametophytic phase of bryophytaB. Sporophytic phase of bryophytaC. Gametophytic phase of pteridophytesD. Gametophytic phase of gymnosperm |
| Answer» Correct Answer - A | |
| 284. |
Find the correct statement for the prothallus of fern.A. Monoecious , protandrous with multicellular rhizoidesB. Monoecious , protandrous with unicellular rhizoidesC. Dioecious , with unicellular rhizoidesD. Monoecious , protandrous with apical antheredia and basal archegonia on ventral surface |
| Answer» Correct Answer - B | |
| 285. |
In a fern prothallus, the following occursA. Self fertillizationB. Cross fertillizationC. ConjugationD. Isogamy |
| Answer» Correct Answer - B | |
| 286. |
Why selaginella is known as heterosporous ? |
| Answer» Because it produces two kinds spores - macro (large) and micro (small) spores. | |
| 287. |
What are sporophylls ? |
| Answer» Sporophylls are leaflets or leaves which bear sporangia. | |
| 288. |
Pinus producesA. No seedsB. FlowersC. No vascular tissuesD. Naked seeds in cones |
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Answer» Correct Answer - d Because Pinus is gymnosperm plant. |
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| 289. |
Pinus or Gymnosperms differs from angiosperms in havingA. Vascular bundlesB. HeterosporyC. SeedsD. Ovules not enclosed in ovary |
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Answer» Correct Answer - D Pinus or gymnosperms differs from angiosperms in having ovules not enclosed in ovary. |
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| 290. |
Horse-tail is the common name of the pteridophyteA. SelaginellaB. EquisetumC. AdiantumD. Ginkgo |
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Answer» Correct Answer - B Horse-tail is the common name of the pteridophyte Equisetum. |
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| 291. |
Sporophylls are photosynthetic inA. GymnospermB. AngiospermC. BryophytaD. Pteridophyta |
| Answer» Correct Answer - D | |
| 292. |
Mark the gymnosperimous plant in which archegonium is absent qA. PinusB. ephedraC. CycasD. Gnetum |
| Answer» Correct Answer - d | |
| 293. |
The wood of Pinus isA. Pycnoxylic and nonoxylicB. Pyconxylic and heteroxylousC. Manoxylic and homoxylousD. Manoxylic and heteroxylous |
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Answer» Correct Answer - a The wood of Pinus is pyconxylic (more than one ring due to epimeral nature of cambium) and monoxylic (formed by the activity of single cambium). |
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| 294. |
The secondary wood of Pinus is characterised byA. Presence of resin cellsB. Presence of resin ductsC. Absence of resin ductsD. Presence of vessels |
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Answer» Correct Answer - b Resin (Terpentine oil): In Pinus roots, stem and needle, resin ducts are found having odorous oil known as resin. This resin is anticoagulant and do not allow to freeze water even upto- `30^(@)C` temperature in Pinus plants. |
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| 295. |
Which one of the following alternatives represents the gametophytic phase in PinusA. Pinus plantB. ZygoteC. Micro and megasporesD. Male and female cones |
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Answer» Correct Answer - c The sporogenesis results in the formation of micro and megapores representing the first gametophyte cells. They undergo gametogenesis so as to form the male and female gametophytes respectively. |
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| 296. |
Heterosporous pteridophytes show certain characteristics, which are precursor to the seed habit in gymnosperms. One of such characteristics isA. presence of vascular tissuesB. external water required for fertilisationC. presence of embryo stageD. development of embryo inside the female gametophyte. |
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Answer» Correct Answer - D Genera like selaginella and salvinia which produce towo kinds of spores, are known as heteroporous. The megasprores and microspores germinate and give rise to female and male gametophytes, respectively the female gametophytes in these plants are retained on the parent sporohytes for variable periods. the development of the zygotes into young embroys take place within the female gametophytes. this event is the precursor to the seed habit which is considered as an importantstep in evolution. |
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| 297. |
Heterosporous pteridophyte belong to class lycopsida isA. LycopodiumB. SelaginellaC. SalviniaD. Pteris |
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Answer» Correct Answer - B Heterosporous pteridophyte belong to class lycopsida is Seaginella. Lycopodium also belongs to lycopsida but it is homosporous. |
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| 298. |
Simplest and highly reduced archegonium is found inA. PinusB. FernC. BryophytesD. Liver worts/mosses |
| Answer» Correct Answer - A | |
| 299. |
Assertion: Funaria archegonium has maximum concentration of sucrose at the tip of neck. Reason: Male gametes show chemotropic movement.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 | |
| 300. |
A water fern capable of fixing atmospheric nitrogen and used as biofertilizer.A. AzollaB. NostocC. AdiantumD. Spirulina |
| Answer» Correct Answer - A | |