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.
| 151. |
Assertion: The resin duct in coniferales is schizogenous in origin. Reason: Resin duct helps to retain water as well as seals the injured areas of plants.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 | |
| 152. |
Assertion. Classification proposed by Betham and Hooker is natural. Reason. This system of classification used as many taxonomic characters as possible.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 - B | |
| 153. |
Classification based on several characters isA. NaturalB. ArtificialC. ClassicalD. Phylogenetic |
| Answer» Correct Answer - A | |
| 154. |
Match column I wth column II and select the correct option from the codes given below `{:("Column I","Column II"),(A." Sagopalm",(i)." Ephedra"),(B." Chilgoza fruit",(ii)." Pinus gerardiana"),(C." Ephedrine drug",(iii)." cycas revolute"),(D." Cedar wood oil",(iv)." Juniperus Virginiana"):}`A. A-iv,B-ii,C-i,D-iiiB. A-iii,B-ii,C-i,D-ivC. A-iii,B-iv,C-i,D-iiD. A-ii,B-iii,C-i,D-iv |
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Answer» Correct Answer - B Stem portion of cycas revoluta nad C. circinalis is a good source of sago- a king of starch used in making bread by poor people. Seeds of pinus gerardiana (Chilgoza) are edible. Oil obtained from juniperus species is medicinally important. An important alkaloid ephedrine is obtained from ephedra (a gymnosperm) and is used intreatment of cough, cold and other respiratory disorders. |
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| 155. |
A Classification based on vegetative characters of plants is not easily accepted by the taxonomists. Give reason. |
| Answer» Vegetative characters such as habit, colour, number and shape of leaves , type of stem and roots are often more easily affected by the environment. Therefore, they are not accepted by the taxonomists. | |
| 156. |
Match column I wth II and select the correct option from the codes given below. `{:("Column I","Column II"),(A" artifical system of classification",(i)" bentham and hooker"),(B." Natural system of classification",(ii)." Linnaeous"),(C." Phylogenetic system",(iii)." Engler and Prantl"):}`A. A-(ii),B-(ii),C-(iii)B. A-(i),B-(ii),C-(iii)C. A-(iii),B-(ii),C-(i)D. A-(iii),B-(i),C-(ii) |
| Answer» Correct Answer - A | |
| 157. |
Plant classification as proposed by carolus linnaeus was artifical because it was based onA. only a few orphological charactersB. all the possible charactersC. anatomical characters which are adaptive in natureD. physiological and morphological characters. |
| Answer» Correct Answer - A | |
| 158. |
In spirogyra during the gemination of zygospore how many haploid nuclei take partA. OneB. TwoC. ThreeD. All four |
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Answer» Correct Answer - a Zygospore undergoes zygotic meiosis and forms 4 haploid nuclei of these three degenerate, So one haploid nuclei take part and one new filament is formed. |
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| 159. |
Artifical systems have equal weightage to to vegetative and sexual characteristics, this is not acceptable because often____characters are more easily affected by environment.A. vegetative charactersB. sexualC. anatomical characters which are adaptive in natureD. physiological |
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Answer» Correct Answer - A Artifical systems of classification were based upon vegetative and sexual characteristics,where both vegetative an sexual characteristics were given equal weightage.it was not acceptable because vegetative characetrs are more easily affected by environment. |
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| 160. |
Sex organs in Funaria developA. in protonemaB. outside capsuleC. in the axil of leafD. at the tip of gametophore |
| Answer» Correct Answer - D | |
| 161. |
Funaria gametophyte isA. dioeciousB. heteroeciousC. autoeciousD. monoecious and autoecious |
| Answer» Correct Answer - D | |
| 162. |
Sex organ of Funaria areA. projected and sessileB. projected and stalkedC. embedded and stalkedD. embedded and sessile |
| Answer» Correct Answer - B | |
| 163. |
Funaria is included in bryophytes becauseA. it is rootlessB. it is without vascular supplyC. its sporophyte is parasite and attached to gametophyteD. it grows near water. |
| Answer» Correct Answer - C | |
| 164. |
Gymnosperm called as a living fossil isA. CycasB. GinkgoC. JuniperusD. both a and b |
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Answer» Correct Answer - D The gymnosperms are comparatively more ancient that the angiosperms in evolutionary terms. Most of the gymnosperms have now become extinct and the goup is presently represented by only 900 livinig species. The living gymnosperms are widely distributed in the cold climates where snow in the source of water. Cycas and Ginkgo are referred to as living fossils vbecause they have not yet changed over the years while its related members or species have becoe extinct or fossilised. the living fossil represents a living unchanged example of an extinct group or genera etc. |
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| 165. |
Which of the following characters represents the affinities of Gnetum with angiosperms and differences with Cycas and Pinus?A. presence of xylem vessel and absence of achegoniaB. peranth and two integumentsC. embryo development and apical meristemD. Absence of resin ducts and leaf venation |
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Answer» Correct Answer - A Gnetum belongs to gymnosperms yet shows similarities with angiosperms on one hand and shows differences with other groups as cycads and conifers at the same time. Resemblance withh the angiosperms. (i). In general habit, it is climber as tree- like (ii). Leaves are broad, green and with reticulate venation. (iii). Archegonia are altogetehr absent in the female gametopyte. (iv). Absence of free nuclear division in the embryo sac. (v). Endosperm completes its development after the fertilisation. (vi). Exylem vessels are present these similarties with angiosperms, separates it from toher groups of gymnosperms, e.g. cycas and pinus. |
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| 166. |
Rhizoids in Riccia areA. Unicellular smooth-walledB. Unicellular tuberculateC. Both smooth-walled and tuberculate unicellularD. Multicellular smooth-walled and tuberculate |
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Answer» Correct Answer - c The lower surface of Riccia bears two type of unicellular rhizoids, smooth walled and tuberculate and help in fixation. |
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| 167. |
In Riccia / Marchantia the rhizoids areA. Branched multicellularB. Unbrached multicellularC. Unbranched multicellularD. Unbranched unicellular. |
| Answer» Correct Answer - d | |
| 168. |
The circinate venation is the characteristic feature of ferms. It refers toA. Coiling of young leavesB. Arrangement of leaves on stemC. Attachement of sori on leavesD. Heterophilly |
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Answer» Correct Answer - a Yound leaves show circinate ptyxis (venation) (water spring like colling with the apex in the centre of the coil) to protect tip of frond. |
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| 169. |
A system of classification in which a large number of traits are considered isA. artifical systemB. phylogenetic systemC. synthetic systemD. natural system. |
| Answer» Correct Answer - D | |
| 170. |
In which plant will you look for mycorrhiza and corolloid roots ? Aslo explain what these terms mean |
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Answer» In Pinus, mycorrhizal roots are found and in Cycas coralloid roots are found. Coralloid roots grow upwards and are highly branched. These are associated with green algae and help in nitrogen fixation. Mycorrhizal roots have association with fungus and this relationship makes available the nutrients and water to the plant. |
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| 171. |
The germination of pollen grain results in the formation ofA. Primary endosperm nucleusB. EmbryoC. Pollen tubeD. Polar nuclei |
| Answer» Correct Answer - C | |
| 172. |
Assertion: Bryophytes possess archegonium as a female sex organ. Reason: Algae also possess the archeagonium.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 The female sex organ of the bryophytes is a remarkable structure it appears for the first time in the liverworts and mosses and continues in the pteridophytes Archeagonium is absnt in thallophytes (algae and fungi). Sex organs in tern are male gametes and female gametes. |
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| 173. |
Non-flowering plants are also calledA. CryptogamsB. PhanerogamsC. TracheophytesD. Archegoniates |
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Answer» Correct Answer - A Non-flowering plants are also called cryptogams. |
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| 174. |
In gymnosperms, the female gametophyte gametophyte bears how many archegonium/archegonia ?A. OneB. 1 or 2C. Two or moreD. None of the above |
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Answer» Correct Answer - C In gymnosperms, the female gametophyte bears two or more archegonia. |
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| 175. |
Motile flagellated asexual spore isA. ZygoteB. ZygosporeC. AplanosporeD. Zoospore |
| Answer» Correct Answer - D | |
| 176. |
In Pin us, many embryos are formed from single zygote, which is known asA. Simple polyembryonyB. Cleavage polyembryonyC. PolyspermyD. Apogamy |
| Answer» Correct Answer - B | |
| 177. |
Columella is a specialised structure found in the sporangium ofA. UlothrixB. RhizopusC. SpirogyraD. None of these |
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Answer» Correct Answer - B (b) In Rhizopus, the central non-sporiferous region of sporangium is called columella. |
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| 178. |
Living fossils isA. Ginkgo bilobaB. Gnetum ulvaC. Pinus roxburghiiD. Cycas revoluta |
| Answer» Correct Answer - A | |
| 179. |
Agar-agar,an important solidyfying agent used in culture medium, is obtained fromA. red algaeB. green algaeC. kelpsD. yellow algae |
| Answer» Correct Answer - A | |
| 180. |
Life cycle in Chlamydomonas / Ulothrix/ Spirogya isA. haplonticB. haplobionticC. diplonticD. diplobiontic |
| Answer» Correct Answer - A | |
| 181. |
Red algae are similar to blue-green algae in possession ofA. similar reserve foodB. nucleusC. phycobilinsD. gas-vascuoles |
| Answer» Correct Answer - C | |
| 182. |
Name the branch of botany which deals with the study of algae. |
| Answer» Phycology or algology. | |
| 183. |
Red algae show maximum photosynthesis in blue green light. Their main pigment to trap this light isA. chlorophyllB. phycoerythrinC. chl a and xanthophyllD. carotenes. |
| Answer» Correct Answer - B | |
| 184. |
The pigment found only in some algaeA. chlorophyll aB. xanthophyllC. caroteneD. phycobilins |
| Answer» Correct Answer - D | |
| 185. |
Seed of Pinus shows three generations asA. Parent sporophyte, gametophyte and future sporophyteB. Parent gametophyte, sporophyte and future gaemtophyteC. Paent sporphyte, sporophyte, future gametophyteD. None of these |
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Answer» Correct Answer - a The seed of Pinus: (1) Parent 2n, sporophyte represented by wing, testa tegmen and perisperm (nucellus). (2) Female gametophyte (n) represented by endosperm. (3) Future sporophyte (2n) represented by embryo (Plumule, radicle, suspensor and cotyledons). |
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| 186. |
Transfusion tissue replaces the veins inA. CycasB. FernsC. PinusD. Both Pinus and Cycas |
| Answer» Correct Answer - D | |
| 187. |
Seed habit originated in certainA. BryophytesB. FernsC. AngiospermsD. Gymnosperm |
| Answer» Correct Answer - D | |
| 188. |
Which pigment is mainly responsible for red colour of red algae. |
| Answer» r-Phycoeythrin. | |
| 189. |
Identify the pair that exhibit circinate vernationA. Nephrolepis and CycasB. Riccia and NephrolepisC. Psilotum and RicciaD. Equisetum and Selaginella |
| Answer» Correct Answer - A | |
| 190. |
Circinate vernation is seen inA. Equisteum, Nephrolepis, PsilotumB. Nephrolepis, Adiantum, PterisC. Lycopodium, NephrolepisD. Psilotum, Nephrolepis, Adiantum |
| Answer» Correct Answer - B | |
| 191. |
Circinate vernation occurs inA. Equisteum, Nephrolepis, PsilotumB. Nephrolepis, Adiantum, PterisC. Lycopodium, NephrolepisD. Psilotum, Nephrolepis, Adiantum |
| Answer» Correct Answer - B | |
| 192. |
In ferns, circinate ptyxis (vernation) is defined asA. arrangement of leaf gaps in stemsB. coiling of young leavesC. arrangement of sori on leavesD. attachement of ramenta on young parts. |
| Answer» Correct Answer - B | |
| 193. |
Circinate ptyxis is found inA. PterisB. DryopterisC. CycasD. All of these |
| Answer» Correct Answer - D | |
| 194. |
A thick , multicelluar covering called indusium in ferns over sori is meant forA. protectionB. producing sporesC. help in dispersalD. has no role |
| Answer» Correct Answer - A | |
| 195. |
A collection of sporangia attached to placenta and covered over by indusium is known asA. sorusB. sporophyllC. ramentaD. spike |
| Answer» Correct Answer - A | |
| 196. |
Laminaria and Fucus belong toA. ChlorophyceaeB. RhodophyceaeC. PaeophyceaeD. Cyanophyceae |
| Answer» Correct Answer - C | |
| 197. |
Which of the following is characteristic of fems?A. Leafy gametophyteB. Circinate vernationC. Mycorrhizal rootsD. Coralloid roots |
| Answer» Correct Answer - B | |
| 198. |
Which one of following is a correct statement?A. Pteridophyte gametophyte has a protonemal and leafy stageB. In gymnosperms female gametophyte is free-livingC. Antheridiophores and archegoniophores are present in pteridophytesD. Origin of seed habit can be traced in pteridophytes |
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Answer» Correct Answer - D (d) Origin of seed habitat can be traced in pteridophytes. Some pteridophytes like Selaginella and Salvinia are heterosporous as they produce teo kinds of spores micro (small) spores and macro (large) spores, which germinate and give rise to male and female gametophyte respectively. The female gametophyte in these plants are retained on the parent sporophytes for variable periods. The development of the zygote into young embryos takes place within the female gametophyte. This event is the precursor to the seed habit and considered to an important step in evolution. |
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| 199. |
Gymnosperms are also called soft wood spermatophytes because they lackA. cambiumB. phloem fibresC. thick-walled tracheidsD. xylem fibres |
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Answer» Correct Answer - D (d) Gymnosperms lack xylem fibres. Large amout of parechymatous cells are present with secondary xylem tracheids. So, these are also known as softwood spermatophytes. |
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| 200. |
Gymnosperms are also called soft wood spermatophytes because they lackA. Thick-walled tracheidsB. Xylem fibresC. CambiumD. Phloem fibres |
| Answer» Correct Answer - B | |