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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.
| 1001. |
Assertion: Both bryophytes and pteridophytes contain well-developed antheridia. Reason: Biflagellate sperms are formed by their antheridia.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 In bryophytes, antheridia are well developed and often possess a stalk. In pteridophytes, antheridia are less developed and generally devoid of a stalik whereas pteridophyses has multiflagellate sperm formed from androcyte cell of antheridium. Bryophytes has biflagellate sperm. |
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| 1002. |
During adverse season, therophytes survive byA. fBulbsB. CornsC. RhizpmesD. Seeds |
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Answer» Correct Answer - d Therophytes are those plants that survive in winter as a seed and complete their life cycle between the spring and autumn. |
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| 1003. |
Which of the following is not found in gymnosperms ?A. OvuleB. SeedC. ArchegoniumD. Antheridium |
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Answer» Correct Answer - D Antheridium is not found in gymnosperms an angiosperms. |
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| 1004. |
Which one of the following shows isogamy with non-flagellated gametesA. SpirogyraB. SargassumC. EctocarpusD. Ulothrix |
| Answer» Correct Answer - A | |
| 1005. |
Algae having coenocytic condition isA. WuchereriaB. VaucheriaC. VauchereriaD. Spirogyra |
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Answer» Correct Answer - B Algae having coenocytic condition Vaucheria. |
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| 1006. |
Which of the following is a flagellated algaA. ChlamydomonnasB. UlothrixC. SpirogyraD. Acetobularia |
| Answer» Correct Answer - a | |
| 1007. |
Alga which is a parasite of tea plant isA. CephaleurosB. UivaC. OedogoniumD. Vaucheria |
| Answer» Correct Answer - A | |
| 1008. |
Laminarin starch is a reserve product characteristic ofA. Green algaeB. Blue green algaeC. Red algaeD. Brown algae |
| Answer» Correct Answer - D | |
| 1009. |
Which of the following is a red alga that is not red?A. NemalionB. PolysiphoniaC. GelidiumD. Batrachospermum |
| Answer» Correct Answer - D | |
| 1010. |
The color of brown algae is due toA. CaroteneB. FucoxanthinC. PhycoerythrinD. Phycocyanm |
| Answer» Correct Answer - B | |
| 1011. |
The alga Chara is called stonewort because its plant body is encrusted withA. Calcium bicarbonateB. Calcium carbonateC. Calcium chlorideD. Calcium oxalate |
| Answer» Correct Answer - B | |
| 1012. |
Alga which is a parasite of tea plant isA. CephaleurosB. UlvaC. OedogoniumD. Vaucheria |
| Answer» Correct Answer - A | |
| 1013. |
The largest alga isA. MicrocystisB. MacrocystisC. Red algaD. Blue-green alga |
| Answer» Correct Answer - B | |
| 1014. |
Ploidy in wing of pollen grain and wing of seed of Pinus isA. x in pollen grain and 2x in seedB. 2x in pollens and 2x in seedC. being an outgrowth, chromosomes are absentD. 1/2 x in wing of pollens and polyploidy in seed. |
| Answer» Correct Answer - A | |
| 1015. |
The phenomenon of sulphur shower in pine forest is due toA. dispersal of winged pollens of PinusB. dispersal of winged seeds of PinusC. bursting of thrid year female cone of PinusD. none of the above |
| Answer» Correct Answer - A | |
| 1016. |
Which one of the following pairs is not correctly matched?A. Red Sea: Trichodesmium erythreum a cyanobacteriumB. Red Tides: Rhodymenia, a red algaeC. Red Snow: Chalmydomonas nivalis, a green algaeD. Red Rust of Tea: Cephaleuros virescens, a green algae |
| Answer» Correct Answer - B | |
| 1017. |
Read the following five statements (A to E) and select the option with all correct statement (A) Mosses and Lichens are the first organisms to colonise a bare rock. (B) Seloginella is a homopourous pteridophyte. (C) Coralloid roots in Cycas have VAM. (D) Main plant body in bryophytes is gametophytic whereas in pteridophytes it is sporophytic. (E) In Gymnoperms, male and female gametophytes are present within sporangla located on sporophyte.A. B,C and DB. A,D and EC. B,C and ED. A,C and D |
| Answer» Correct Answer - B | |
| 1018. |
Select the incorrect pair (a) Numerical taxonomy-all observable characteristics (b). Cytotaxonomy-Cytological information (c). Chemotaxonomy-Chromosome number and structure (d). Cladistic taxonomy-Origin from a common ancestor |
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Answer» Correct Answer - C Chemotaxonomy is based upon the characteristics of various chemical constituents of organisms. Chemical constituents of plant species have been found to be unvarying and do not change easily. Chenical characters have also helped in establishing relationships and statistical evaluation of taxonomic information. |
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| 1019. |
Main pigment in phaeophyceae (Brown algae) isA. phycocyaninB. phycoerythrinC. fucoxanthinD. chlorophyll b |
| Answer» Correct Answer - C | |
| 1020. |
Assertion : Conifer trees produce a large quantity of wind-borne pollen grains Reason : The pollen grains have wings.A. If both assertion and reason are true and the reason is a correct explanation of the assertionB. If both assertion and reason are true but reason is not a correct explanation of the assertionC. If the assertion is true but reason is falseD. If both the assertion and reason are false |
| Answer» Correct Answer - A | |
| 1021. |
Moss peat is used as a packing material for sending flowers and live plants to distant places becauseA. It serves as a disinfectantB. It is easily availableC. It is hygroscopicD. It reduces transpiration |
| Answer» Correct Answer - C | |
| 1022. |
Food is stored as floridean starch in Rhodophyceae. Mannitol is the reserve food material of which group of algae ? |
| Answer» Mannitol is the reserve food material in Phalophyceae. | |
| 1023. |
Peat, obtained from Sphagnum moss, is used asA. fuelB. manureC. corrosiveD. both a and b. |
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Answer» Correct Answer - D Peat consists of deposits of vegetable matter which have accumulated in bogs and swamps and slowly decomposed, becoming somewhat carbonised and compacted. It is dark brown in colour. Peat is built by Sphagnum moss, for this reason, sphagnum is called peat moss. peat is used as fuel and manure. |
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| 1024. |
In which of the following groups would you place a plant which produces seeds but lacks flower and fruits.A. FungiB. BryophytesC. PteridophytesD. Gymnosperms |
| Answer» Correct Answer - d | |
| 1025. |
To which would ou assign a plant that has xylem and phloem, produces meiospores, embryo but lacks seeds and flowers?A. BryophytesB. PteridophytesC. TracheophytesD. Spermatophytes. |
| Answer» Correct Answer - B | |
| 1026. |
Plants produce embryo and spores but lacks seed and vascular tissue belongs toA. BryophytaB. PteridophytaC. GymnospermD. Angiosperm |
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Answer» Correct Answer - A Plants produce embryo and spores but lacks seed and vascular tissue belongs to bryophyta. |
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| 1027. |
In which of the following groups would you place a plant which procues spores and embryos but lacks seeds and vascular tissue.A. FungiB. BryophytesC. PteridophytesD. Gymmosperms |
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Answer» Correct Answer - b The vascular tissue (i.e., xylem and pholem) are completely absent water and nutrients enter the cell by diffusion. Sporangium produces spores by meiosis. The zygote develops to form and embryo which produces the sporophyte. |
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| 1028. |
What is common in all the three Funaria, Dryopteris and GinkgoA. Presence of archegoniaB. Well developed vascular tissuesC. Independent gametophyteD. Independent sporophyte |
| Answer» Correct Answer - a | |
| 1029. |
What is common in all the three Funaria, Dryopteris and GinkgoA. Independent sporophyteB. Presence of archegoniaC. Well developed vascular tissuesD. Independent gametophyte |
| Answer» Correct Answer - B | |
| 1030. |
What is common in all the three, Funaria, Dryopteris and Ginkgo ?A. Presence of archegoniaB. Well developed vascular tissuesC. Independent gametophyteD. Independent sporophyte |
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Answer» Correct Answer - A Presence of archegonia is common in all the three, Funria (bryophyte), Dryopteris (pteridophyte) and Ginkgo (gymnosperm). |
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| 1031. |
Multiflagellate male gametes (sperms) are found inA. ChlamydomonasB. FunariaC. DrycopteriaD. Riccia |
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Answer» Correct Answer - c Antheridium producing about 32 antherozoids Each antherozoid is large uniculeate colled and mltiflagellate. |
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| 1032. |
The plant group that produces spores and embryo but lacks vasular tissues and seeds isA. PteridophytaB. RhodophytaC. BryophytaD. Phaeophyta |
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Answer» Correct Answer - C (c) Bryophytes consist of thalloid body, attached to the substratum by hair-like structures called rhizoids (true roots are absent), these lack vascular tissue (xylem and phloem) and require water at the time of fertilisation. Bryophytes exhibit alternation of generation. The haploid gametophyte (producing gametes for sexual reproduction) alternates with diploid sporophyte (producing spores for asexual reproduction). Production of large number of spores is for increasing the chances of chances of survival and is an adaptation to land conditions. |
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| 1033. |
Vegetative reproduction in mosses is by fragmentation and budding in theA. `1^(@)` protonemaB. Leafy stageC. `2^(@)` protonemaD. Both A and C |
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Answer» Correct Answer - C Vegetative reproduction in mosses is by fragmentation and budding in `2^(@)` protonema. |
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| 1034. |
Archegonia are not found inA. ThallophytaB. BryophytaC. PteridophytaD. Gymnosperm |
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Answer» Correct Answer - A Archegonia is not found in thallophyta and angiosperms. |
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| 1035. |
Archegoniate areA. Algae,bryophyta and pteridophytaB. Bryophyta,pteridophyta and gymnospermC. Bryophyta, pteridophyta,gymnosperm and angiospermD. Pteridophyta,gymnosperm and angiosperm |
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Answer» Correct Answer - B Archegoniate are bryophyta, pteridophyta and gymnosperm. |
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| 1036. |
Assertion: Unlike thallophytes, bryophytes show formation of embryo Reason: The embryo gives rise to gaemetophyte plant of bryophytes.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 Thallophytes, i.e., algae and fungi completely lack the formation of embryo . In bryophytes, the zygote, on gemination, does not produce the gametophyte plant it undergoes segmentation to form an embryo. The embryo (diploid) by further segmentation and differentation gives rise to sporophyte. The sporophyll obtains its nourishment directly from the parent gaemtopyhyte to which it is organically attached. |
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| 1037. |
Pteridophytes differ from bryophytes and thallophytes in havingA. ArchegoniaB. AntheridiaC. Alternation of generationD. Vascular tissues |
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Answer» Correct Answer - D In contrast to thallophytes and bryophytes, pteridophytes have vascular tissues. |
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| 1038. |
An alga very rich in protein isA. SpirogyraB. UlothrixC. OscillatoriaD. Chlorella |
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Answer» Correct Answer - D (d) Dried Chlorella pyrenoidosa contains approximately 50-55% crude protein (more than that in dried beef, soyabean meal and dried yeast). |
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| 1039. |
Bryophytes can be separated from algae because theyA. are thalloid formsB. have no conducting tissueC. possess archegonia with outer layer of sterile cellsD. contain chloroplasts in their cells |
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Answer» Correct Answer - C (c) Archegonia is female sex organ in bryophytes. It is a flask-shaped multicellular organ. It is composed of a cylindrical upper portion called neck with a single layer of sterile cells called Neck Canal Cells (NCC) and a lower swollen sac-like portion called venter. It also has layer or layers of sterile cells. Venter encloses a larger egg cell and a smaller (just above to egg) Venter Canal Cell (VCC). |
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| 1040. |
Bryophytes can be distinguished from algae/fungi/thallophytes because they haveA. thallus,haploid ,gametophytic bodyB. chloroplastC. no conducting tissueD. sterile jacket of cells around multicellular sex organs. |
| Answer» Correct Answer - D | |
| 1041. |
Bryophytes can be separated from algae, because theyA. Are thalloid formsB. Have no conducting tissueC. Possess archegoniaD. Contain chloroplast |
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Answer» Correct Answer - c The female sex organ is arcegonia. It is flask shaped structure distinguishable into a long neck and a globular swollen Venter. |
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| 1042. |
Two type of cells hyaline and green or with various shades are characteristic of bryophytes inA. Funaria hygrometricaB. Polytrichum communeC. Sphagnum pappiolossumD. Porella pelatypylla |
| Answer» Correct Answer - c | |
| 1043. |
The bryophytes are usually found inA. damp and shaded areasB. marine habitatC. snady soilsD. xeric habitat |
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Answer» Correct Answer - A Bryophytes are usually found in damp, humid and shaded localities. |
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| 1044. |
Why the bryophytes usually grow luxuriently during the rainly season near the regular supply of water ? |
| Answer» Bryophytes are regarded as amphibians of the plant kingdom. They need water for successful completion of their life-cycle. Therefore, they grow near the regular supply of water. | |
| 1045. |
Assertion: The sex organs in the bryophytesare jacketed. Reason: Bryophytes are land plants.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 Bryophytes are a group of non-vascular land plants. The sex organs in the bryophytes are ulticellular and jacketed. The jacket of sterile cells around the sperms and eggs is an adaptation to a life on land. It protectes the sex cells against the drying effects of air. |
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| 1046. |
Assertion: All bryophytes are land dwellers. Reason: Water is necessary to complete their life-cycle.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 Most of the bryophytes are land dwellers which inhabit damp, shaded and humid localities. A few of them live in on float on water. The bryophytes cannot carry on their reproductie activities without sufficient moisture. Presence of water is necessary. |
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| 1047. |
Assertion. Bryophytes are successful land plants. Reason. They grow successfully on land without requiring water.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 - D | |
| 1048. |
Select the correct statementA. Salvinia, Ginkgo and Pinus all are gymnospermsB. Sequoia is one of the tallest treesC. The leaves of gymnosperms are not well adapted to extremes of climateD. Gymnosperms are both homosporous and heterosporous |
| Answer» Correct Answer - B | |
| 1049. |
New systermatics introduced by sir Julian Huxley is also calledA. PhenaticsB. CladisticsC. BiosystematicsD. Numerical taxonomy |
| Answer» Correct Answer - C | |
| 1050. |
All algae haveA. Chlorophyll-a and chlorophyll-bB. Chlorophyll-b and carotenesC. Chlorophyll-a and carotenesD. Phycobilins and carotenes |
| Answer» Correct Answer - C | |