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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. |
Function of filiform apparatus is to :-A. Guide the entry of pollen tubeB. Recognize the suitable pollen at sigmaC. Stimulate division of generative cellD. Produce nectar |
| Answer» Correct Answer - A | |
| 52. |
Function of filiform apparatus is to :-A. recognize the sutiable pollen at stigmaB. stimulate division of ernatvie cellC. produce nectarD. guide the entry of pollen tube |
| Answer» Correct Answer - D | |
| 53. |
The filiform apparatus is present inA. Synergids antipodal cells polar nuclei filiform apparatusB. generative cellC. nucellar embryoD. aleuro cell |
| Answer» Correct Answer - A | |
| 54. |
What does the filiform apparatus do at the entrance into or Function of filiform apparatus is toA. it guides pollen tube form a synergid to eggB. it helps in the entry of pollen tube in to a synergidC. it prevents entry of more than one pollne tube into the embryosacD. it bring about opening of the pollen tube |
| Answer» Correct Answer - B | |
| 55. |
The filiform apparatus is present inA. TapetumB. SynergidsC. AntipodalsD. Anther wall |
| Answer» Correct Answer - B | |
| 56. |
Which function of tapetum is correc ?A. Helps in pollen wall formationB. Transportation of nutrients to inner side of antherC. Synthesis of callase enzyme for separation of microspore tetradsD. All of these |
| Answer» Correct Answer - D | |
| 57. |
Study the following statements and select the correct option. (i) Tapetum nourishes the developing pollen grains. (ii) Hilum represents the junction between ovule and funicle. (iii) In aquatic plants such as water hyacinth and waterlity, pollination occurs by water. (iv) The primary endosperm nucleus is triploid.A. A and B are correctB. A, B and D are correctC. B, C and D are correctD. Only A and D are correct |
| Answer» Correct Answer - C | |
| 58. |
Tapetum is found in:A. AnthersB. AndroeciumC. OvaryD. Ovules |
| Answer» Correct Answer - A | |
| 59. |
Tapetum is :A. ProtectiveB. NutritiveC. ReproductiveD. Gametophytic |
| Answer» Correct Answer - B | |
| 60. |
Anemophillous flowers have:A. Sessile stigmaB. small and smooth stigmaC. Long and feathery stigmaD. Coloured flowers |
| Answer» Correct Answer - C | |
| 61. |
The process in which haploid embryo is formed from haploid egg without fertilization is called :A. AposporyB. AgamospermyC. ApogamyD. Vegetative propogation |
| Answer» Correct Answer - C | |
| 62. |
The prominent pollen grain apertures called germ pores are present onA. vegetative cellB. intineC. exineD. generative cell |
| Answer» Correct Answer - C | |
| 63. |
Transfer of pollen grains from the another to the stigma of another flower of the same plant is calledA. XenogamyB. GeitonogamyC. AutogamyD. Allogamy |
| Answer» Correct Answer - B | |
| 64. |
Transfer of pollen anther to stigma of another flower of same plant is called______ |
| Answer» Correct Answer - Geitonogamy | |
| 65. |
In grass family, the cotyledon is called:A. PlumuleB. HypocotylC. ScutellumD. Radicle |
| Answer» Correct Answer - C | |
| 66. |
When pollens of one plant fall on the stigma of another flower of the same plant, it is known as:A. CleistogamyB. allogamyC. AutogamyD. Dichogamy |
| Answer» Correct Answer - B | |
| 67. |
Germination of seed within fruit isA. OviparyB. ViviparyC. HypogealD. Epigeal |
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Answer» Correct Answer - B `**` Seed germinated inside the fruit while attached to the plant is called viviparous germination. `**` Vivipary is found in halophytes or marshy plants (e.g. : Rhizophora and Sonneratia) `**` Vivipary is undersirable for annual crop plants as seeds cannot be stored for next season. |
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| 68. |
Direct effect of pollens on seeds or fruit is referred to:A. AmphimixisB. ApomixisC. ApogamyD. Xenia |
| Answer» Correct Answer - D | |
| 69. |
Viviparous germination of seed is characteristics of:A. Arachis hypogaeaB. CoconutC. RhizophoraD. Hibiscus |
| Answer» Correct Answer - C | |
| 70. |
Most resistant biological material is:A. LigninB. CelluloseC. SuberinD. Sporopolenin |
| Answer» Correct Answer - D | |
| 71. |
Select the correct order of endosperm types. A. Cellular , helobial, free nuclearB. Cellular, free nuclear , helobialC. Helobial , free nuclear, cellularD. Free nuclear, cellular , helobial |
| Answer» Correct Answer - C | |
| 72. |
Which one of the following pairs of plant structures has haploid number of chromosomesA. egg nucleus and secondary nucleusB. megasproe moterh cel and antiposdal cellsC. egg cell and antipodal cellsD. nucellus and antipdal cell s |
| Answer» Correct Answer - C | |
| 73. |
The tripolid number of chromosomes of the first taxon is 10 times more than the haploid number of chromosomes of the second taxon, while the diploid number of the third taxon is 6 times more than the haploid numberof the fourth taxon. Which one of the following shows the ascending order of the number of chromosomes in their respective endosperm?A. Oryza-Allium-Saccharum-NicotianaB. Allium-Oryza-Nicotiana-SaccharumC. Nicotiana-Saccharum-Oryza-AlliumD. Saccharum-Oryza-Nicotiana-Allium |
| Answer» Correct Answer - B | |
| 74. |
Which one of the following pairs of plant structures has haploid number of chromosomes?A. Megaspore mother cell and antipodal cellsB. Egg cell and antipodal cellsC. Nucellus and antipodal cellsD. Egg nucleus and secondary nucleus |
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Answer» Correct Answer - B Egg cell and antipodal cells have haploid number of chromosomes. In angiosperms a single diploid megaspore mother cell matures within an ovule. Through meiosis. It gives rise to four megaspores (haploid). In most plants only one of thes megaspore survive. This functional megaspore divides three times by mitosis and produces eight haploid nuclei enclosed within a 7-celled embryo sac. One nucleus is located near the opening of embryo sac in egg cell. Two nuclei are located in a single cell in the middle of embryo sac and are called polar nuclei, two nuclei are contained in cells called synergids that flank the egg cell and other three nuclei are resided in the cells called antipodals, located at the end of embryo sac opposite the egg cell. |
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| 75. |
Which one of the following pairs of plant structures has haploid number of chromosomesA. Nucellus and antipodal cellsB. Egg nucleus and secodary nucleusC. Megaspore mother cell and antipodal cellsD. Egg cell and antipodal cells |
| Answer» Correct Answer - D | |
| 76. |
A typical angiosperm embryosac at maturity is :-A. 4 nucleate- 2 celledB. 8 nucleate-7 celledC. 4 nucleate -4 celledD. 8 nucleate - 4 celled |
| Answer» Correct Answer - B | |
| 77. |
Dioecious condition prevent autogamy and geitonogamy |
| Answer» Correct Answer - True | |
| 78. |
Pea flowers produce assured seed sets. Give a reason. |
| Answer» It is so because pea flowers are cleistogamous, autogamous and homogamous. Hence, self pollination occur before the flowers open up at maturity . | |
| 79. |
(a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilization after the pollen tube enters one of the synergids in an ovule of an angiosperm . |
| Answer» (a) (i) Herkogamy (ii) Dichogamy. | |
| 80. |
Which one of the following structure found in dicot seed will be genetically identical with its maternal plant ?A. TestaB. RadicleC. PlumuleD. Cotyledon |
| Answer» Correct Answer - A | |
| 81. |
A fertilized ovule is a sporophytic organ with a:A. Newly developed gametophyteB. Newly developed sporophyte in embryonal stageC. Super sporophyteD. None of the above |
| Answer» Correct Answer - B | |
| 82. |
"Incompatibility is a natural barrier in the fusion of gametes". Justify the statement. |
| Answer» The incompatibility is considered as the most widespread and effective device to prevent inbreeding and promote out breeding . It acts as a natural barrier by the interaction of chemical substances produced by the male gametophyte and the tissue of style. Normally , the functional pollens belonging to right mating type germinate on stigma , develop pollen tube and bring about fertilisation. The pollen grains belonging to other mating types are discarded . | |
| 83. |
After pollination which of the following events is crucial for fertilization to occurs in flowering plants ?A. Sperm swim to the egg and the polar nucleiB. Petals close around the reproductive partsC. Meiosis occurs within the pollen grainD. A pollen tube grows from the stigma to the ovule |
| Answer» Correct Answer - D | |
| 84. |
The proteinaceous substance substance involvedin sporophytic incompatibility and stored in the exine is derived fromA. TapetumB. MicrosporeC. Anther loculeD. Stigmatic papillae |
| Answer» Correct Answer - A | |
| 85. |
If a leaf cell of gymnosperm plant had 24 chromosomes, then its endosperm cell would cotainA. 24 chromosomesB. 36 chromosomesC. 12 chromosomesD. 48 chromosomes |
| Answer» Correct Answer - C | |
| 86. |
If number of chromosomes in root cell of male plant is 40 and in leaf cell of female plant is 60, what will be number of chromosomes in their endosperm ?A. 50B. 120C. 70D. 80 |
| Answer» Correct Answer - D | |
| 87. |
Raphe isA. Ridge formed by fused funiculusB. Funicle attached to ovuleC. Part of nucellusD. Part of flower |
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Answer» Correct Answer - A Raphe is ridge formed by fused funiculus. |
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| 88. |
Raphe isA. part of flowerB. nucellusC. ridge formed by funicleD. funicle attached to ovule |
| Answer» Correct Answer - C | |
| 89. |
Adventive embryony and polyembryony is common in:A. CarthamusB. CitrusC. CorchorusD. Maize |
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Answer» Correct Answer - B Polyembryony/adventive polyembryony occurs in citrus. |
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| 90. |
Adventive embryony in Citrus is due toA. nucellusB. integumentsC. zygotic embryoD. fertized egg |
| Answer» Correct Answer - A | |
| 91. |
Adventive embryony and polyembryony is common in:A. TriticumB. CitrusC. CarthamusD. Corchorus |
| Answer» Correct Answer - B | |
| 92. |
Adventive embryony in Citrus is due toA. nucellusB. integumentsC. zygotic embryoD. fertilised egg |
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Answer» Correct Answer - A Nucellus embryony occurs in crassinucellate ovules (e.g. Citrus, Opuntia). On the other hand integumentary embryony occurs in tenuinucellate ovules (e.g. Euonymus). |
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| 93. |
A typical angiosperm anther is__________with each lobe having two theca i.e. they are called _______ |
| Answer» Correct Answer - Bilobed, dithecous | |
| 94. |
Anther is generallyA. monosporangiateB. bisporangiateC. tetrasporangiateD. triporangiae |
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Answer» Correct Answer - C A dithecous anther is tetrasporangiate having four microsporangia. |
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| 95. |
Male and femal flowers are present on different plants (dioecious) to ensure xenogamy, inA. papayaB. bottle gourdC. maizaD. all of these |
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Answer» Correct Answer - A The plants in which male and female flowers are borne on separate individuals, are referred to as dioecious plants, e.g., papaya, data palm. Dioecious plants exhibit xenogamy. |
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| 96. |
In `ul((i))` conditions, both male and female flowers are borne on same plant an example of such plants is `ul((ii))`.A. `{:((i),(ii).),("mmonoecious","cucurbit"):}`B. `{:((i),(ii).),("mmonoecious","papaya"):}`C. `{:((i),(ii).),("dioecious","cucurbit"):}`D. `{:((i),(ii).),("dioecious","papaya"):}` |
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Answer» Correct Answer - A Monoecious plant species have separate male and female flowers on the same plant. Examples of monoecious plants are maize birch, coconut and cucurbit. THe plants in which male and female flowers are borne on separate individual are referred to as referred to as dioecious plants e.g., papaya, data palm. |
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| 97. |
A dithecous anther consists of `ul((i))` microsporangia, `ul((ii))` in each lobe.A. `{:((i),(ii).),(four,two):}`B. `{:((i),(ii).),(two,"one"):}`C. `{:((i),(ii).),(two,two):}`D. `{:((i),(ii).),(four,"one"):}` |
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Answer» Correct Answer - A A stamen or male reproductive organ of a flower is made up of two parts-a stalk-like filament and a knob like terminal anther. Each anther has two lobes which are attached at the back by a sterile band called connective. When both the anther lobes are present, the stamen is called bithecous (or dithecous). A dithecous anther is tetrasporangiate having four microsporangia. Each lobe has two microsporangia separated by a strip of sterile tissue. When a single anther lobe is present, the stamen is termed as monothecous. |
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| 98. |
In papaya male and female flowers are present on different plants it permitsA. autogamyB. geitonogamyC. btoh autogamy and geitonogamyD. xenogamy |
| Answer» Correct Answer - D | |
| 99. |
Select incorrect statement (w.r.t artificial hybridisation )A. emasculation is removal of anther in their mature condition form bisexual flowerB. emascualtion is not required in male sterile plantsC. unisexual female flower is bagged in bud condition to prevent cantaminationD. emasculated flowers are baagged in bud condition |
| Answer» Correct Answer - D | |
| 100. |
Select the incorrect option w.r.t endospemic seedsA. WheatB. peaC. castorD. coconut |
| Answer» Correct Answer - B | |