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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.
| 551. |
In Cycas or gymnosperms, pollination takes place byA. Water/HydrophilyB. Wind/AnemophilyC. Insects/EntomophilyD. Animals/Zoophily |
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Answer» Correct Answer - B In Cycas or Gymnosperms pollination takes place by Wind/Anemophily. |
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| 552. |
In gymnosperms pollination is exclusively byA. AnimalsB. WindC. WaterD. Insects |
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Answer» Correct Answer - b Anemophily or wind polination occurs in gymnoperms. |
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| 553. |
In gymnosperms, pollination takes place throughA. InsectsB. WindC. BatsD. Birds |
| Answer» Correct Answer - B | |
| 554. |
Chloroplast of Chlamydomonas isA. stellateB. cup-shapedC. collar-shapedD. spiral |
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Answer» Correct Answer - B (b) In Chlamydomonas, chloroplast is single and cup-shaped. Chloroplasts are the pigment (chl-a and chl-b) containing bodies present in green algae. The green colouration of the members of chlorophyta is due to he presence of excess of chlorophyll in the chloroplasts. The chloroplasts are well defined bodies met within every cell of the members of this class, though number and shape of tthe chloroplasts variesin different orders of the class. |
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| 555. |
Unique features of bryophytes is that theyA. produce sporesB. have sporophyte attached to gametophyteC. lack rootsD. lack vascular tissues |
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Answer» Correct Answer - B (b) The main plant body of bryophytes is gametophytic which is independent and may be thallose or foliose. The sporophyte is differentiated water of ponds during spring season, hence also called pond scum. Whereas, blue-green algae like Nostoc, Anabaena are the important nitrogen fixing cyanobacteria, , so these are used as biofertiliser, Azotobacter is the aerobic free living/non-symbiotic nitrogen fixer. |
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| 556. |
The endosperm of gymnosperm isA. TriploidB. HaploidC. DiploidD. Polyploid |
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Answer» Correct Answer - b Endosperm in gymnoperms is formed before fertilization and is always haploid. |
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| 557. |
In the haplontic life cycle of many algae,A. Sporophytic generation is represented by one celled zygoteB. Free living sporophyte is presentC. Meiosis is involved in gamete formationD. Diploid spore forms gametophyte |
| Answer» Correct Answer - A | |
| 558. |
The diploid stage is represented by one celled zygote only inA. ChlamydomonasB. SpirogyraC. both 1 and 2D. Funaria |
| Answer» Correct Answer - C | |
| 559. |
Thallus is flattened, leaf like and anchors to the rocks with the help of holdfast inA. LaminariaB. PolysiphoniaC. BatrachospermumD. Ectocarpus |
| Answer» Correct Answer - A | |
| 560. |
What is the unique feature of bryophytes ?A. Vascular bundlesB. Medicinal importanceC. Gametophyte attached to the sporophyteD. Sporophyte attached to the gametophyte |
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Answer» Correct Answer - C Unique feature of bryophytes is sporophyte attached to the gametophyte. |
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| 561. |
Red snow is caused byA. Zoospores of ChlamydomonasB. Hypnospores of C. brauniC. Aplanospores of C. mediaD. Hypnospores of C. nivalis |
| Answer» Correct Answer - D | |
| 562. |
In which of the following multicilliated/multifagelated antherozoids are presentA. Riccia and FunariaB. Pteris and CycasC. Riccia and CycoasD. Marchantia and Riccia |
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Answer» Correct Answer - b In Pteris antheridum is having (about 32) multiflagellated. Colled (2-3 coils) antherozoids or spermatozoids. |
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| 563. |
Red snow is caused byA. stigmaB. chloroplastC. hypnosporeD. aplanospore |
| Answer» Correct Answer - C | |
| 564. |
Red snow is caused byA. Zoospores of ChlamydomonasB. Hypnospores of C. brauniC. Aplanospores of C. reinhardtiiD. Hypnospores of C. nivalis |
| Answer» Correct Answer - D | |
| 565. |
In moss, stomata are found onA. LeavesB. StemC. CapsuleD. Spore |
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Answer» Correct Answer - D In moss, stomata are found on capsule. |
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| 566. |
When the gametophyte is not formed by spores but by any other part of sporophyte , it is known asA. MultisporyB. PolysporyC. AposporyD. Germination |
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Answer» Correct Answer - c Apospory is the formation of gametophyte directly from sporophyte without the meiotic formation of sprores. |
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| 567. |
Zygotic meiosis takes place inA. SelaginellaB. SpirogyraC. PinusD. Brossica |
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Answer» Correct Answer - b Plant body of Spirogyra is haploid but after gametic fusion, diploid zygospore is formed, thus zygotic meiosis takes place. |
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| 568. |
Rhizoids of Funaria areA. Unicellular, colourless with oblique septaB. Multicellular, coloured wih transverse septaC. Multicellular, colourless with oblique septaD. Multicellular, colourless with oblique and transverse septa |
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Answer» Correct Answer - C Rhizoids of Funaria are multicellular, colourless with oblique septa. |
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| 569. |
Write is the structure formed by moss spore germination ? |
| Answer» Correct Answer - Protonema. | |
| 570. |
A spore of moss on germination formA. SporophyteB. Leafy gametophyteC. ProtonemaD. Prothallus |
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Answer» Correct Answer - C A spore of moss, on germination form protonema. |
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| 571. |
A mature ligule, having a prominent basal portion, is called Or The basal portion of ligule of Seloginella is hemispherical and is calledA. TrichocystB. HeterocystC. RhizophoreD. Glossopodium |
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Answer» Correct Answer - d At the base of ligule there is present a sheath of elongated cells called glosopodium (secretpory). This ligule is secretory as well as protective. It secrets water/mucilage to keep growing point of stem and young leaves moist. It also protesits young leaves. |
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| 572. |
Examine the figure A,B,C and D. In which one of the four options all the items A,B,C and D are correct A. `{:(A,B,C,D),("Chara","Marchantia","Fucus","Pinus"):}`B. `{:(A,B,C,D),("Equistum","Ginkgo","Selaginella","Lycopodium"):}`C. `{:(A,B,C,D),("Seloginella","Equisetum","Salvinia","Ginkgo"):}`D. `{:(A,B,C,D),("Funaria","Adiantum","Salvinia","Riccia"):}` |
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Answer» Correct Answer - c Moss of Bryophytes bears protonemal and leafy stage. (2) Gymnosperm female gaemtophyte is not free living. (3) They are present in Marchantia of Bryophyte. (4) Origin of seed habit started in Selaginetlla. |
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| 573. |
Why the rhizoids are not called roots ? |
| Answer» Rhizoids are gametophyte whereas roots are sporophytic organs. | |
| 574. |
Moss peat is used as a packing material for sending flower and live plants to distant places becauseA. It is easily availableB. It reduces transpirationC. It is hygroscopicD. All of the above |
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Answer» Correct Answer - C Moss peat is used as a packing material for sending flower and live plants to distant places because it is hydroscopic (absorb and hold water). |
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| 575. |
The ferms in which the netire sporangium develops from a single sperficial cell of the sporophyll are known asA. LeptosporangiateB. EuporangiateC. UnisporangiateD. Mesoporanglate |
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Answer» Correct Answer - a Such a sporangium arises from a single superficial initial. It divides pariclinary into outer and inner components. While the inner cell forms the stalk, the outer gives rise to sporangium proper. In Marattia alata, the sporangia in a sonus may fuse to form a synanjoi. |
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| 576. |
Rhizoids differ from roots asA. rhizoids are always unicellular but roots are multicellularB. rhizoids arise in gametophytes but roots in sporophytesC. roots are branched but rhizoids are always unbranched.D. all of the above. |
| Answer» Correct Answer - B | |
| 577. |
In Pinus/Cycas/gymnosperms, the endosperm isA. trlploidB. haploidC. diploidD. tetraploid |
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Answer» Correct Answer - B (b) In gymnosperms, e.g. Pinus, Cycas, endosperm develops before fertilisation and is haploid in nature. In angiosperms, endosperm is triploid (3n) and formed after double fertilisation. |
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| 578. |
Assertion: Pinus has a pyramidal appearance. Reason: The older parts of long shoot have scars of fallen dwarf shoots.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 - b Long branches of Pinus become gradually shorter towards the apex. Hence the pine tree has a conical or pyramidal apperance. Long branches bear short branches and older portion of long branches show the scars of fallen short branches. |
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| 579. |
What is the similarity between gymnosperms and angiospermsA. Pholem of both have companian cellsB. Endosperm is formed before fertilization in bothC. Origin of ovule and seed in similar in bothD. Both have leaves, stem and roots |
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Answer» Correct Answer - d Main plant body sporophyte of gymnosperm and angiosperm are made up of root, stem and leaves. |
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| 580. |
In Pinus, the spur (dwarf shoot) hasA. One needleB. Two needlesC. Three needlesD. All correct |
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Answer» Correct Answer - d Dwarf shoot: In case of Pinus, actually in dwarf shoot the number of Pinus needles varies from one to six. |
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| 581. |
The integument of Cycas ovule is hard on the account ofA. TestaB. TegmenC. SclerotestaD. Sarcotesta |
| Answer» Correct Answer - C | |
| 582. |
Cycas is dicotyledonous, yet not placed under dicotylednus becauseA. It looks like a palm treeB. It has compound leavesC. Its ovules are naked.D. It bears megasporophylls |
| Answer» Correct Answer - C | |
| 583. |
Asexual spores with flagella in algae are calledA. zoosporeB. zygosporesC. aplanosporesD. hypnospores |
| Answer» Correct Answer - A | |
| 584. |
Which one is a wrong statement ?A. Mucor has biflagellate zoosporesB. Haploid endosperm is typical features of gymnospermsC. Brown algae have chlorophyll a and c, and FucoxanthinD. Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms |
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Answer» Correct Answer - A Mucor do not has biflagellate zoospores. |
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| 585. |
Typical embryosac of angiosperms isA. TetranucleatedB. Eight-nucleated and seven-celledC. Tetranucleated and seven-celledD. Tetranucleated and tetra-celled |
| Answer» Correct Answer - B | |
| 586. |
Stem in ferns is underground, monopodial root stock and calledA. rhizomeB. cormC. bulbD. sucker |
| Answer» Correct Answer - A | |
| 587. |
The structure in algae helping in perennation to tide over drought areA. zoospores,hypnospores and aplanosporesB. zoospores,akinetes,zygosporesC. aplanospores,hypnospores and zygospores.D. none of the above |
| Answer» Correct Answer - C | |
| 588. |
Which one of the following is wrong about Chara ?A. Globule is male reproductive structureB. Upper oogonium and lower round antherodiumC. Globule and nucule present on the same plantD. Upper antheridium and lower oogonium |
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Answer» Correct Answer - D Chara has upper oogonium and lower round antheridium. |
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| 589. |
An alga which can be employed as food for human being isA. UlothrixB. ChlorellaC. SpirogyraD. Polysiphonia |
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Answer» Correct Answer - B (b) Chlorella is potential food source because it is high in protein and other essential nutrients when dried, it contains about 45% protein, 20% fat, 20% carbohydrate, 5% fibre and 10% minerals and vitamins. |
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| 590. |
Red tide is caused byA. GonyaulaxB. CeratiumC. TaceratiumD. All of these |
| Answer» Correct Answer - A | |
| 591. |
Which of the following is responsible for peat formation?A. SphagnumB. MarchantiaC. RicciaD. Funaria |
| Answer» Correct Answer - A | |
| 592. |
Which of the following is responsible for peat formation?A. MarchantiaB. RicciaC. FunariaD. Sphagnum |
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Answer» Correct Answer - D (d) Peat is mainly an accumulation of partially decayed vegetaion or organic matter and Sphagnum accumulations can store water, since both living and dead plants can hold large quantities of water and living matter (like meat) for long distance transport inside their cells hence, it is reponsible for peat formation. |
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| 593. |
Which of the following is responsible for peat formation?A. MarchantiaB. RicciaC. FumariaD. Sphagnum |
| Answer» Correct Answer - D | |
| 594. |
Which one of the following is wrong about CharaA. Upper oogonium and lower round antheridium.B. Globule and nucule present on the same plant.C. Upper antheridium and lower oogonium.D. Globule is male reproductive structure. |
| Answer» Correct Answer - C | |
| 595. |
Which one of the following is true mossA. Cord mossB. Club mossC. Irish mossD. All of the above. |
| Answer» Correct Answer - A | |
| 596. |
Predominant and largest gaemtophyte is ofA. SelaginellaB. PinusC. MossD. Rice |
| Answer» Correct Answer - C | |
| 597. |
A Prothallus isA. a structure in pteridophytes formed before the thallus developsB. a sporophytic free living structure formed in pteridophytesC. a gametophyte free living structure formed in pteridophytesD. a primitive structure formed after fertilization in pteridophytes |
| Answer» Correct Answer - C | |
| 598. |
What is true for Cycas?A. Cycas is dioeciousB. Ovules without integumentC. Largest female coneD. All of the above. |
| Answer» Correct Answer - A | |
| 599. |
In Cycas pollen grains shed atA. 2 celled stageB. 3 celled stageC. 4 celled stageD. 5 celled stage |
| Answer» Correct Answer - B | |
| 600. |
Pollen grains are released fromA. MacrosporangiumB. MicrosporangiumC. Megaspore mother cellD. Archegonium |
| Answer» Correct Answer - B | |