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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. |
Functional megaspre in an angiosperm develops intoA. ovuleB. endosperm and cotyledonsC. embryo sacD. embryo |
| Answer» Correct Answer - C | |
| 552. |
Select the incorrect statement regarding angiospermA. Pollen grain is the first cell of male gametophyteB. Megaspore is diploidC. Megaspore is the first cell of female gametophyteD. All of the above |
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Answer» Correct Answer - B Megaspore is haploid (n). |
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| 553. |
Largest cell of the ovule isA. Megaspore mother cellB. Antipodal cellC. Central cellD. Size of cells variable |
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Answer» Correct Answer - C Largest cell of the ovule is central cell. |
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| 554. |
The presence of exserted stamens is a character ofA. wind pollinationB. water pollinationC. insect pollinationD. homogamy |
| Answer» Correct Answer - A | |
| 555. |
In Cannabis, pollination is carried out byA. insectsB. windC. birdsD. bats |
| Answer» Correct Answer - B | |
| 556. |
Pollination in Lotus is carried out byA. waterB. insectsC. windD. all of these |
| Answer» Correct Answer - B | |
| 557. |
Pollination in Lotus is carried out byA. WindB. WaterC. InsectsD. All of the above |
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Answer» Correct Answer - C Pollination in Lotus is carried out by insects. |
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| 558. |
Hypohydrophilous pollination occurs inA. VallisneriaB. CeratophyllumC. HydrillaD. Lotus |
| Answer» Correct Answer - B | |
| 559. |
The pollination in Vallisneria isA. epihydrophilousB. hypohydrophilousC. anemophilousD. entomophilous |
| Answer» Correct Answer - A | |
| 560. |
Type of divisions that occurs during formation of megaspore isA. MeiosisB. MitosisC. Meiosis followed by mitosisD. Mitosis followed by meiosis |
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Answer» Correct Answer - B The process of formation of megaspores from the megaspore mother cell is called megasporogensis. Ovules generally diggerentiate a single megaspore mother cell (MMC) in the micropylar region of the nucellus. The MMC undergoes meiotic division. Meiosis results in the production of four megaspores. |
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| 561. |
The type of pollination found in Viola isA. ChasmogamyB. cleistogamyC. bud pollinationD. homogamy |
| Answer» Correct Answer - B | |
| 562. |
The conditions required for the autogamyA. BisexualityB. Synchrony in pollen release and stigma receptivityC. Anthers and stigma lie close to each otherD. All of the above |
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Answer» Correct Answer - D The conditions required for the autogamy are bisexuality, synchrony in pollen release and stigma receptivity and anther and stigma should lie close to each other. |
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| 563. |
Read the following statements and find out the incorrect statements. a. Plants use two abiotic (wind and water) and one biotic (animals) agent to achieve pollination. b. Majority of plants use abiotic agents for pollination. c. Only a small proportion of plants uses biotic agents. d. Pollination by water is common among abiotic polinators. e. Pollination by wind is quite rare in flowering plants and is restricted to about 30 genera mostly monocotyledons.A. a, b, c and dB. b, c, d and eC. a, c, d and eD. b and d only |
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Answer» Correct Answer - B `**` Plants use two abiotic (wind and water) and one biotic (animals) agents to achieve pollination. `**` majority of plants use biotic agents for pollination only a small proportion of plants use abioticagents. `**` Pollination by wind is more common amongst abiotic pollinations. `**` Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocotyledons. |
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| 564. |
Endosperm is not completely consumed by developing embryo inA. GramB. BeanC. CastorD. Pea |
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Answer» Correct Answer - C Endosperm is not completely consumed by developing embryo in castor. |
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| 565. |
Which is correct about Viola ?A. Commonly called common pansyB. Bears two types of flowers, chasmogamous and cleistogamousC. Produce assured seed-set even in the absence of pollinatorsD. All of the above |
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Answer» Correct Answer - D `**` Some plants such as Viola (common pansy), Oxalis and Commelina produce two types of flowers-Chasmogamous flowers which are similar to flowers of other species with exposed anthers and stigma, and cleistogamous flowers which do not open at all. `**` In such flowers, the anthers and stigma lie close to each other. When anther dehisce in the flower bud, pollen grains come in contact with stigma to effect pollination. `**` Cleistogamous flowers are invariable autogamous as there is no chance of cross-pollen landing on the stigma. `**` Cleistogamous flowers produce assured seed-set even in absence of pollinators. |
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| 566. |
Which one of the following is the most common type of embryo sac?A. allium typeB. Oenothera typeC. Polygonum typeD. Adoxa type |
| Answer» Correct Answer - C | |
| 567. |
In order to check the purity of honey and its source, pollen grains are being studied inm a sample of honey such a study is called as:A. AeropalynolgyB. PalynologyC. MelittopalynologyD. Latropalynology |
| Answer» Correct Answer - C | |
| 568. |
Feathery stigma occurs inA. PeaB. Wheat / JowarC. DaturaD. Caesalpinia |
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Answer» Correct Answer - B Feathery stigma occurs in wheat/jowar. |
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| 569. |
In the given diagram, X represents A. cellular endospermB. nuclear endospermC. helobial endospermD. reminate endosperm |
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Answer» Correct Answer - B Nuclear endosperm `(X)` is the most common type of endosperm. It is named so because it contains free nuclei in the beginning. The primary endosperm nucleus divides of free nuclei. Meanwhile central vacuole appears in the central cell and pushes the cytoplasm containing the nuclei to the periphery. The cytoplasm thickens so that the vacuole decreases in size. It ultimately disappears with the exception of a few cases. The multinucleate cytoplasm undergoes cleavage and gives rise to a multicellular tissue, e.g., maize, wheat, rice, sunflower, Capsella bursa-pastoris. |
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| 570. |
Milk of tender coconut represents ------ and the surrounding white coconut meal represents -------.A. `{:((i),(ii).),("cellular endosperm","free-nuclear endosperm"):}`B. `{:((i),(ii).),("free-nuclear endosperm","cellular endosperm"):}`C. `{:((i),(ii).),("helobial endoperm","cellular endosperm"):}`D. `{:((i),(ii).),("free-nuclear endosperm","helobial endosperm"):}` |
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Answer» Correct Answer - B In coconut (Cocos nucifera), the surrounding white kernel called coconut meal is cellular endosperm and the coconut water (also called coconut milk) in the centre is free nuclear endosperm made up of thousands of nuclei. |
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| 571. |
Ovule integument gets transformed intoA. seedsB. percarpC. seedsD. cotyledons |
| Answer» Correct Answer - C | |
| 572. |
Embryoid is produced from:A. CallusB. Fertilized eggC. Fertilized synergidsD. None of these |
| Answer» Correct Answer - A | |
| 573. |
How many haploid cells are present in matue female gametophyte of a flowering plant? Name them. |
| Answer» Six haploid cell, viz., 1 egg, 2 synergids and 3 antipodals and one dikaryotic polar cell with two haplid nuclei. | |
| 574. |
Movement of pollen tube towards embryo sac isA. ThermotacticB. PhototacticC. ChemotacticD. Thigmotactic |
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Answer» Correct Answer - C Movement of pollen tube towards embryo sac is chemotactic. |
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| 575. |
Proplast of two cells repel each other because of carrying:A. Opposite chargesB. Similar chargesC. Certain chemical inhibitorsD. Certain hormones |
| Answer» Correct Answer - B | |
| 576. |
Growth of cellus in tissue can be accelerated using:A. GibberellinsB. Cytokinins or cocount milkC. Cucumber extractD. Auxins |
| Answer» Correct Answer - B | |
| 577. |
Ex-albuminous seeds at maturityA. Have no residual endospermB. Retain part of endospermC. Have no perispermD. Have no seed coat |
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Answer» Correct Answer - A Ex-albuminous seeds at maturity have no residual endosperm. |
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| 578. |
When anthers and stigma of a given flower mature at different points of time, it is a case ofA. GeitonogamyB. DichogamyC. CleistogamyD. Herkogamy |
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Answer» Correct Answer - B In some species, pollen release and stigma receptivity are not synchronised. Either the pollen is released before the stigma becomes receptive or stigma becomes receptive much before the release of pollen. This condition is called dichogamy in which stigma and anther matures at different time. |
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| 579. |
The reproduction is only by vegetative meansif the plant is:A. Developed parthenogeneticalyB. Produced by pollen cultureC. Produced by apogamyD. All of the above |
| Answer» Correct Answer - D | |
| 580. |
In Rafflesia, pollination is brought about byA. elephantB. carrion fliesC. birdsD. snakes |
| Answer» Correct Answer - B | |
| 581. |
PEN stands forA. Primary endosperm nourishmentB. Primary endosperm nucleusC. Primary embryo nourishmentD. Poly embryo nourishment |
| Answer» Correct Answer - B | |
| 582. |
Which one is wrongA. Vegetative cell is larger than generative cellB. Intine is made of cellulose and pectinC. Pollen grains of some plants remain viable for monthsD. Double fertilization is absent where pollen is shed in two-celled stage. |
| Answer» Correct Answer - D | |
| 583. |
Which of the following is a group of fleshy fruit ?A. Guava, orange and mangoB. Groundnut and mustardC. Guava, groundnut and mustardD. Mango, guava and mustard |
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Answer» Correct Answer - A Guava, orange and mango are fleshy fruits. |
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| 584. |
The fruits in which thalamus also contributes to fruit formation are calledA. True fruitsB. False fruitsC. Parthenocarpic fruitsD. Parthenogenic fruits |
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Answer» Correct Answer - B The fruits in which thalamus also contributes to fruit formation are called false fruits. |
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| 585. |
Fruit formation is directly associated with stimulus of:A. PollinationB. FertilizationC. Endospore formationD. None of these |
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Answer» Correct Answer - A Fruit formationi is related with stimulus of pollination but seed formation is related with stimulus of fertilization. |
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| 586. |
Which among the following is very common?A. PorogamyB. MesogamyC. ChalazogamyD. Zoodiogamy |
| Answer» Correct Answer - A | |
| 587. |
The egg apparatus of angiosperms comprisesA. an egg cell and two antipodalsB. an egg and two synergidsC. an egg and two polar nucleiD. an egg and central cell . |
| Answer» Correct Answer - B | |
| 588. |
The egg apparatus is comparable to,A. Female gametangiumB. Female gametophyteC. A reduced archegoniumD. Both a and c correct |
| Answer» Correct Answer - D | |
| 589. |
The egg apparatus of angiosperms comprisesA. An egg cell and two synergidsB. An egg cell and two antipodalsC. An egg cell and two polarsD. An egg cell and a central cell |
| Answer» Correct Answer - A | |
| 590. |
Assertion. Some fruits are seedless or contain empty or non viable seeds. Reason . They are produced without fertilization .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 and but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 591. |
Higher auxin: cytokinin ratio in culture medium results inA. Rooting in callusB. Multishooting in callusC. Rapid growth of callusD. None of these |
| Answer» Correct Answer - A | |
| 592. |
Androgenic embryoids are:A. HaploidB. DiploidC. TriploidD. Polyploid |
| Answer» Correct Answer - A | |
| 593. |
Ploidy of ovum of angiosperms isA. haploidB. diploidC. triploidD. polyploid |
| Answer» Correct Answer - A | |
| 594. |
Read the following statement and answer the questions that follows: "A guava fruit has 200 viable seeds.". a) What are viable seeds? b) Write the total number of: i) Pollen grains , ii) Gametes in producing 200 viable guava seeds. c) Prepare a flow-chart to depict the post-pollination events leading to viablle-seed production in a flowering plant. |
| Answer» (b) (i) Pollen grain=200 (ii) 400 gametes , | |
| 595. |
A flower of brinzal has 520 ovules in its ovary . However, it produces a fruit with only 480 viable seeds. (a) What could have prevented the rest of the 40 ovules from maturing into viable seeds? Explain giving a reason. (b) Describe the development of a dicot embryo in a viable seed . (c ) Why certain angiospermic seeds are albuminous while others exalbuminous ? Explain. |
| Answer» (a) 40 ovules are abortive . They do not produce functional viable embryos. | |
| 596. |
Pollinia are found inA. wheatB. madarC. mangoD. banana |
| Answer» Correct Answer - B | |
| 597. |
Pollinia are found in the flowers oA. Calotropis/ Asclepiadoideae or ApocynaceaeB. Vinca (Catharanthus)C. Hibiscus/MalvaceaeD. Salvia/Lamiaceae |
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Answer» Correct Answer - A Pollinia are found in the flowers of Calotropis/Asclepiadaceae. |
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| 598. |
The coconut water and the edible part of coconut are equivalent to or the morphological nature of the edible part of coconut isA. mesocarpB. embyoC. endospermD. Endocarp seed thalamus mesocarp |
| Answer» Correct Answer - C | |
| 599. |
The point where funicle attaches with ovule is:A. ChalazaB. HilumC. MicropyleD. Integument |
| Answer» Correct Answer - B | |
| 600. |
Assertion : In hemianatropous ovule, the funicle lies parallel to body of ovule Reason : Here, body of ovule has rotated by `90^(@)`A. Both Assertion and Reson ae true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but Reason are false |
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Answer» Correct Answer - A When the funiculus lies at right angle `(90^(@))` to the body of ovule and thce chalazal and micropylar ends in straight line then the ovule is called hemianatropous. |
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