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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.
| 51. |
Tapetum is a part ofA. Male gametophyteB. Female gametophyteC. Ovary wallD. Anther wall |
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Answer» Correct Answer - D The cells between middle layer and microsporogenous cells develop into tapetum Tapetum plays an important role in pollen development by providing nutrition it is a part od anther wall. |
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| 52. |
If a sporagium is derived from a single cell, it is calledA. LeptosporangiateB. EusporangiateC. HeterosporangiateD. Homosporangiate |
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Answer» Correct Answer - A When the sporangium is derived from a single parent cell and the wall is one layered it is called leptosporangiate type. |
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| 53. |
Ubisch bodies found in tapetal cell help in formation ofA. Pollenkitt and polliniaB. ExineC. SporopolleninD. Intine and pollenkitt |
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Answer» Correct Answer - B Ubisch bodies secreted by tapetum help in external thickening of exine as these bodies get coated with sporopollenin |
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| 54. |
Progency produced as a result of cross pollinationA. Shows high degree of variability and is evolutionary importantB. Is sterileC. Has recessive charactersD. Is homozygous with phenotypic uniformity |
| Answer» Correct Answer - A | |
| 55. |
Cross pollination in crop plant is known asA. AutogamyB. AllogamyC. CleistogamyD. Chasmogamy |
| Answer» Correct Answer - B | |
| 56. |
Pollination by water is seen inA. NelumbiumB. LegumesC. LiliesD. Grasses |
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Answer» Correct Answer - B Vallisneria is submerged dioecius fresh water plant Hence pollinated in water. |
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| 57. |
The below figure shows 2 plants of the same species identify the types of pollination indicated as P1 P2 and P3 A. `{:(" P1 P2 P3"),("Autogamy Geitongamy Xenogamy"):}`B. `{:(" P1 P2 P3"),("Geitonogamy Allogamy Autogamy"):}`C. `{:(" P1 P2 P3"),("Allogamy Chasmogamy Cleistogamy"):}`D. `{:(" P1 P2 P3"),("Autogamy Xenogamy Geitonogamy"):}` |
| Answer» Correct Answer - A | |
| 58. |
Wind pollination is common inA. OrchidsB. LegumesC. LiliesD. Grasses |
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Answer» Correct Answer - D Wind pollination is common in grasses and gymnosperms |
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| 59. |
The mature stigma is either rough or sticky inA. All types of flowersB. Water pollinated flowersC. Wind pollinated flowersD. All of these |
| Answer» Correct Answer - C | |
| 60. |
Pollen grains can be stored for several years in liquid nitrogen having a temperature ofA. `-120^(@)` CB. `-80^(@)` CC. `-196^(@)` CD. `-160^(@)` C |
| Answer» Correct Answer - C | |
| 61. |
When anthers and stigma mature at the same time it is calledA. ProtandryB. HomogamyC. IsogamyD. Dichogamy |
| Answer» Correct Answer - B | |
| 62. |
part of the gynoecium which receives the pollen is calledA. OvaryB. OvuleC. StyleD. Stigma |
| Answer» Correct Answer - D | |
| 63. |
Pollination by wind is calledA. GeitnogamyB. AnemophilyC. AutogamyD. None of these |
| Answer» Correct Answer - B | |
| 64. |
The formation of embryo sa is calledA. MegasporogenesisB. MegagametogenesisC. Micro gametogenesisD. None of these |
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Answer» Correct Answer - B The nucleus of megaspore undergoes divisions and give rise to embryo sac or female gametophyte which is called megagametogenesis. |
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| 65. |
Rarely among angiosperms in pollen grains influenced the endosperm this is called asA. MetaxeniaB. Nemec phenomenonC. XeniaD. Mesogamy |
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Answer» Correct Answer - C The transference of characters by a male gamete and its influence on endosperm is known as xenia. |
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| 66. |
Starting from the innermost part, the correct sequence of parts in an ovule areA. Egg, nucellus, embryo sac, integumentB. Egg, embryo sac, nucellus, integumentC. Embryo sac, nucellus, integument, eggD. Egg, integument, embryo sac, nucellus |
| Answer» Correct Answer - B | |
| 67. |
The given figure refers to a T.S of anther. Identify A to E respectively A. Sporogenous tissue, tapetum, middle layer, epidermis, endotheciumB. Sporogenous tissue, epidermis, middle layer, tapetum, endotheciumC. Sporogenous tissue, epidermis, tapetum, middle layer, endotheciumD. Sporogenous tissue, tapetum, epidermis, middle layer, endothecium |
| Answer» Correct Answer - D | |
| 68. |
Which of the following statements is correctA. Sporopollenin can be degraded by enzymesB. Sporopollenin is made up of inorganic materialsC. Sporopollenin can withstand high temperatures as well as strong acids and alkalisD. Sporopollenin can withstand high temperatures but not strong acids |
| Answer» Correct Answer - C | |
| 69. |
Identify A, B, C and D in given figure A. `{:("A B C D"),("Anther Filament Pollen sac Pollen grains "):}`B. `{:("A B C D"),("Anther Pedicel Megasporangium Pollen grains "):}`C. `{:("A B C D"),("Anther Petiole Megasporangium Pollen grains "):}`D. `{:("A B C D"),("Anther Petiole Pollen sac Magaspore "):}` |
| Answer» Correct Answer - A | |
| 70. |
The figure given below shows stages in embryogenesis in a typical dicot (Capsella) identify structures A, B, C, and D respectively orWhich option is correct for the region produced from the apical octant (b) and basal octant (d) in Capsella type of embyonic development A. Suspensor, Radicle, Plumule, HypocotylsB. Suspensor, Plumule, Redicle, CotyledonsC. Hypopysis, Radicle, Plumule, cotyledonsD. Suspensor, Radicle, Plumule, Cotyledons |
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Answer» Correct Answer - D The anterior octant occurs towards the chalazal end. It is called apical octant or chalazal octant. The shoot apex or plumule epicotyl and two cotyledons of embryo will develop from this octant. The posterior octant occurs towards the micropylar end. It is called basal octant towards the micropylar end. It is called basal octant or mictopylar octant. The hypocotyls and the central region of radical of the embryo will develop from this octant. |
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| 71. |
The ovule in pea are or Ovule of Capsella isA. AntropousB. HemianatropousC. CampylotropousD. Amphitropous |
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Answer» Correct Answer - C In campyloytopus the body of ovule is curved but the embryo sac is straight e.g. Capsella, Capparis. |
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| 72. |
The embryo in sunflower hasA. No cotyledonB. One cotyledonC. Two cotyledonsD. Many cotyledons |
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Answer» Correct Answer - C Since sunflower is a dicotyledonous planet, so the number of cotyledons in sunflower will be two. |
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| 73. |
From among the sets of term given below, identify those that are associated with the gyneciumA. Stigma, ovule, embryo sac, placentaB. Thalamus, pistil, style, ovuleC. Ovule, ovary, embryo sac, tapetumD. Ovule, stamen, ovary, embryo sac |
| Answer» Correct Answer - A | |
| 74. |
During microsporogenesis, meiosis occurs inA. EndotheciumB. Microspore mother cellC. Microspore tetradsD. Pollen grains |
| Answer» Correct Answer - B | |
| 75. |
In agamospermy, the embryo sac is diploid because it is formed without meiosis, such embryo sac may develop fromA. Megaspore mother cellB. Microspore mother cellC. MegasporesD. Micropores |
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Answer» Correct Answer - A In Agamospermy megaspore mother cells no meiosis persists so all the megaspores remain diploid and later on they develop in diploid embryo sacs |
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| 76. |
In Capsella meiosis takes place duringA. Development of pollen grainsB. Development of eggC. Germination of zygoteD. Development of embryo sac |
| Answer» Correct Answer - D | |
| 77. |
The anther wall consists of four wall layers whereA. Endothecium lies inner to middle layersB. Tapetum lies just inner to endotheciumC. Tapetum lies next to epidermisD. Middle layers lie between endothecium and tapetum |
| Answer» Correct Answer - D | |
| 78. |
In an embryo sac of a typical angiosperm there areA. Egg, synergids and antipodalsB. Egg, synergids, polar nuclei and antipodalsC. Egg, synergids, central cell and polar nucleiD. Egg, synergids and secondary cell |
| Answer» Correct Answer - B | |
| 79. |
female gametophyte of angiospermic plants is represented byA. OosporeB. EggC. CarpelD. Pollen grain |
| Answer» Correct Answer - B | |
| 80. |
From the statements given below choose the option that are true for a typical female gametophyte of a flowering plant (i) It is 8 nucleate and 7- celled at maturity (ii) it is free nucleate during the development (iii) it is situated inside the integument but outside the nucellus (iv) it has an egg apparatus situated at the chalazal endA. (i) and (iv)B. (ii) and (iii)C. (i) and (ii)D. (ii) and (iv) |
| Answer» Correct Answer - C | |
| 81. |
In angiosperms endosperm is formed byA. Free nuclear divisions of megasporeB. Division of fused polar nucleiC. Division of fused polar nuclei and male gameteD. Division of fused synergids and male gamete |
| Answer» Correct Answer - C | |
| 82. |
Endosperm of gymosperm isA. DiploidB. TetraploidC. HaploidD. none of these |
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Answer» Correct Answer - C Endosperm in gymnosperm is formed before fertilization and is always haploid. |
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| 83. |
Assertion : Cellular endosperm is formed by both nuclear division and wall formation Reason : It lacks haustoria.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the 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 cellular endosperm is characterized by the absence of free nuclear stage. The division of the primary endosperm nucleus and a few subsequent nuclear division are followed regularly by wall formation. The occurrence of haustoria is a common feature of this type of endosperm the haustoria may be micropylar or chalazal. Occasionally, both type of haustoria are present in the same plant. |
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| 84. |
Parthenogesis is a term of or which one of the following generates new genetic combination leading to variationA. Sexual reproductionB. Asexual reproductionC. BuddingD. Regeneration |
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Answer» Correct Answer - A Development of the individual from single gamete without fertilization is called pathengensis |
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| 85. |
Pollen tube discharge its gametes inA. SynergidsB. AntipodalsC. Central cellD. None of these |
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Answer» Correct Answer - A The pollen tube releases two male gametes, which migrate towards the chalazal end of the degnerated synergid by an unknown mechanism Gametes discharge at synergid cells. |
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| 86. |
Fusion of two dissimilar gametes is calledA. Fertilization of a flower by the pollen from a flower of another plant in the same populationB. PollinationC. Self pollinationD. Self fertilization |
| Answer» Correct Answer - A | |
| 87. |
The formation of embryo without fusion of gametes is termed asA. AposporyB. IsogamyC. ApogamyD. Syngamy |
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Answer» Correct Answer - C The formation of sprophyte from gametophytic cell without fertilization is called apogamy |
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| 88. |
Formation of fruits (Seed) without fertilization is known as or ovary `overset(No fertilization)rarr` Fruit or The process of embryo formation without fertilization is known asA. ParthenocarpyB. ParthenogenesisC. PolyembryonyD. Polygamy |
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Answer» Correct Answer - A When seedless fruits (noble varieties) are produced by the removal of pollination the process is known as pathenocarpy |
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| 89. |
Anemophily is NOT observed inA. MaizeB. JowarC. SugarcaneD. Salvia |
| Answer» Correct Answer - D | |
| 90. |
Which one of the following is an example of cleistogamy or Even in absence of pollinating agents seed setting is assured inA. SunflowerB. VallisneriaC. CommelinaD. Calatropis |
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Answer» Correct Answer - C In cleistogamy bisexual flowers never open therefore the pollengrains may only pollinate the stigma of the same flower e.g. commelina bengalenis (day flower) |
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| 91. |
Geitonogamy involvesA. Fertilization of a flower by the pollen from a flower of another plant in the same populationB. Fertilization of a flower by the pollen from a flower of another plant belonging to a distant populationC. Fertilization of a flower by the pollen from another flower of the same plantD. Fertilization of a flower by the pollen from the same flower |
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Answer» Correct Answer - C Geitonogamy is the transfer for pollen grains from anthers of one flower to another flower of either the same plant of one flower to another flower of either the same plant or genetically similar plant or between two clones. |
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| 92. |
Pollination by slug and snails is calledA. OrnithophilousB. MalacophilousC. AnemophilousD. Chiropterophilous |
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Answer» Correct Answer - B Malacophily is cross pollination brought about by the agency of snails, slugs e.g. Arisaema (cobra plant) |
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| 93. |
Megasporangium is equivalent toA. OvuleB. Embryo sacC. FruitD. Nucellus |
| Answer» Correct Answer - A | |
| 94. |
The point of attachment of funicle with chalazal end is calledA. PlacentaB. IntegumentC. NucellusD. Hilum |
| Answer» Correct Answer - D | |
| 95. |
Assertion : In hemianatropous ovule, the funicle lies parallel to body of ovule Reason : Here, body of ovule has rotated by `90^(@)`A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the 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 the assertion is false but reason is true |
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Answer» Correct Answer - D When funicle lies at right angle to body of ovule and micropyle, the ovule is called hemianatropous or body of ovule has rotated by `90^(@)` |
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| 96. |
Assertion : Pollen grain reaches directly to the egg, which is seated deep in the ovarian cavity Reason : To effect fertilization, the pollen grains germinate on the stigma.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the 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 the assertion is false but reason is true |
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Answer» Correct Answer - D In angiosperms the female gametophyte is seataed deep in the ovarian cavity, quite away from the stigma. The pollen (male gametophyte) is normally held at the stigma. In seed plants the male gametes are brought to the egg containing female gametophyte by a pollen tube. A pollen grain does not pass down the stigma. Only its pollen tube does so. |
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| 97. |
Double fertilization is a characteristic ofA. GymnospermsB. BryophytesC. AngiospermsD. Pteridophytes |
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Answer» Correct Answer - C Because egg is the part of embryo sac. |
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| 98. |
When pollen tube enters by integuments then the process is calledA. MesogamyB. PorogamyC. ChalazogamyD. Pseudogamy |
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Answer» Correct Answer - A In mesogamy pollen tube penetrates laterally through integuments (Cucurbita) and funiculus (e.g. Pistacia) |
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| 99. |
Male gametes in angiosperms are formed by the division ofA. MicrosporeB. Generative cellC. Vegetative cellD. Microspore mother cell |
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Answer» Correct Answer - B Generative cell divides into two male gametes, if it has not divided already. |
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| 100. |
Male gametophyte in angiospherms producesA. Single sperm and a vegetative cellB. Single sperm and a vegetative cellC. three spermsD. Two sperms and a vegetative cell |
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Answer» Correct Answer - D Male gametophyte in angiosperm is 3- celled containing 2 male gametes (sperms) and vegetative cell. |
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