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Sexual Reproduction In Flowering Plants
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Class 12th
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Science
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Biology
» L-2 : Sexual Reproduction In Flowering Plants
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Sexual Reproduction In Flowering Plants
Board
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Bihar Board
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Class 12th
»
English Medium
»
Science
»
Biology
» L-2 : Sexual Reproduction In Flowering Plants
Objective Questions (MCQs)
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Multiple Choice
Verified
ID- 1385
BSEB, 2019 (C)
1. Haploid (n) endosperm is specialization of which among the following?
(A) Angiosperms
(B) Gymnosperms
(C) Fungi
(D) Algae
Multiple Choice
Verified
ID- 1386
BSEB, 2019 (C)
2. Self-pollination occurs in which among the following plants?
(A) Unisexual
(B) Bisexual
(C) Both (A) and (B)
(D) None of these
Multiple Choice
Verified
ID- 1387
BSEB, 2020 (A)
3. Seed which endosperm is known as:
(A) Apocarpic
(B) Polyembryony
(C) Endocarpic
(D) Endospermic
Multiple Choice
Verified
ID- 1388
BSEB, 2020 (A)
4. Anemophily type of pollination is not found in:
(A) Grass
(B) Maize
(C) Wheat
(D) Salvia
Multiple Choice
Verified
ID- 1390
BSEB, 2018 (A)
5. In which of the following spices of plants seed are produced through apomixis:
(A) Asteraceae and Grass
(B) Mustard
(C) Citrus and Mango
(D) None of these
Multiple Choice
Verified
ID- 1391
BSEB, 2017 (A)
6. Cleistogamous flowers are always:
(A) Self-pollinated
(B) Cross pollinated
(C) 'A' and 'B' both
(D) None of these
Multiple Choice
Verified
ID- 1393
BSEB, 2017 (C)
7. What is the Function of Embro sac?
(A) Formation of Embryo
(B) Preside nutrition to Embryo
(C) Determination of sex
(D) All of these
Multiple Choice
Verified
ID- 1395
BSEB, 2017 (C)
8. Which one is a false fruit?
(A) Mango
(B) Lemon
(C) Rice
(D) Apple
Multiple Choice
Verified
ID- 1396
BSEB, 2011
9. Anemophily takes place (pollination) by:
(A) By Bird
(B) By Bat
(C) By Snail
(D) By Wind
Multiple Choice
Verified
ID- 1398
BSEB, 2011
10. Entemophily takes place (pollination) by:
(A) By Bird
(B) By Bat
(C) By Wind
(D) By Insect
Multiple Choice
Verified
ID- 1399
BSEB, 2013
11. Pollen grains represent:
(A) Sporophyte
(B) Cametophyte
(C) Male Gametophyte
(D) None of these
Multiple Choice
Verified
ID- 1402
BSEB, 2013,2021 (A)
12. The wall of pollen grain is:
(A) Single layered
(B) Double layered
(C) Tripli layered
(D) Multi layered
Multiple Choice
Verified
ID- 1403
BSEB, 2013
13. Pollen grain may be:
(A) Gametophite
(B) Articulated
(C) Allergent
(D) All of these
Multiple Choice
Verified
ID- 1405
BSEB, 2013
14. Anemophilous flowers are usually:
(A) attractive
(B) small
(C) colourless
(D) both 'B' and 'C'
Multiple Choice
Verified
ID- 1406
15. Female gemetophyte of angiosperms is represented by:
(A) Ovule
(B) Megaspore mother cell
(C) Embryo sac
(D) Nucellus
Multiple Choice
Verified
ID- 1408
16. Formation of embryo directly from nucellus and integument is:
(A) Adventitive polyembryony
(B) Apospory
(C) Appgamy
(D) Apomixis
Multiple Choice
Verified
ID- 1409
17. Function of tapetum is:
(A) Protective
(B) Nutritive
(C) Respiratory
(D) All of the above
Multiple Choice
Verified
ID- 1410
18. Sexual reproduction of flowering plants was discovered by
(A) Camerarius
(B) Nawaschin
(C) Strasburger
(D) Maheshwari
Multiple Choice
Verified
ID- 1411
19. Egg apparatus consists of
(A) Egg and antipodals
(B) Polar nuclei
(C) Egg and synergids
(D) Egg
Multiple Choice
Verified
ID- 1412
BSEB, 2021 (A)
20. Every living cell of plant can give rise to the whole plant. This property known as:
(A) Cloning
(B) Somaclonal
(C) Totipotency
(D) All of these
Multiple Choice
Verified
ID- 1467
21. Anemophily occurs in:
(A) Salvia
(B) Vallisneria
(C) Coconut
(D) Bottle Brush
Multiple Choice
Verified
ID- 1468
22. A tetraploid male plant is crossed with deploid female plant. Ploidy of endosperm will be:
(A) Diploidy
(B) Triploidy
(C) Tetraploidy
(D) Pentaploidy
Multiple Choice
Verified
ID- 1469
23. Pollination in Lotus is:
(A) By Water
(B) By Wind
(C) By Insect
(D) All of these
Multiple Choice
Verified
ID- 1470
24. Haploid plants develop by pollen are called:
(A) Emasculation
(B) Parthenocarpy
(C) Samatic Hybridization
(D) Androgenesis
Multiple Choice
Verified
ID- 1471
25. Closed flower:
(A) Decliny
(B) Cleistogamy
(C) Dichogamy
(D) None of these
Multiple Choice
Verified
ID- 1472
26. Demerit of self pollination is:
(A) Unisexual
(B) Dichogamy
(C) Heterostyle
(D) None of the above
Multiple Choice
Verified
ID- 1473
BSEB, 2019 (A)
27. Amphibian among plants belong to:
(A) Algae
(B) Bryophytes
(C) Fungi
(D) Pteridophytes
Multiple Choice
Verified
ID- 1474
BSEB, 2019 (A)
28. Flowers of Vallisnria spp are:
(A) Anemophilous
(B) Entromophilous
(C) Hydrophilous
(D) Zoophilous
Multiple Choice
Verified
ID- 1475
BSEB, 2018 (C)
29. Which of the following is not called a vegetative propagate?
(A) Rhizome
(B) Sucker
(C) Offset
(D) Zoospore
Multiple Choice
Verified
ID- 1476
BSEB, 2019 (A)
30. Ganoecium is made up of:
(A) Stigma
(B) Style
(C) Ovary
(D) All of these
Multiple Choice
Verified
ID- 1477
31. An Orthrotropous ovule is one in which micropyle and chalaza are:
(A) Obligue to furniculus
(B) At right angles of funiculus
(C) In straight line with funiculus
(D) Parallel to funiculus
Multiple Choice
Verified
ID- 1478
32. In an ovule meiotic takes place in:
(A) Nucellus
(B) Megaspore mother cell
(C) Megaspore
(D) Arthesporium
Multiple Choice
Verified
ID- 1479
33. In capsella the endosperm is generally:
(A) Haploid
(B) Diploid
(C) Triploid
(D) Tetraploid
Multiple Choice
Verified
ID- 1480
34. Who proved that the cells are totipotent?
(A) White
(B) Skrog
(C) Miller
(D) Stewart
Multiple Choice
Verified
ID- 1481
35. Father of Indian Anigosperm Embryology is:
(A) B. M. Johri
(B) B. G. L. Swami
(C) R. N. Kapil
(D) P. Maheshwari
Multiple Choice
Verified
ID- 1482
36. Polymbryony occurs in:
(A) Maize
(B) Citrus
(C) Corchorus
(D) Carthamus
Multiple Choice
Verified
ID- 1483
37. In Monocots, grafting is almost impossible because they lack:
(A) Cambium
(B) Ground tissue
(C) Vascular bundle
(D) Parenchymatous cells
Multiple Choice
Verified
ID- 1484
38. Double fertilization in Anigosperms was discovered by:
(A) Strassburger
(B) J. C. Bose
(C) Maheshwari
(D) Nawaschim
Multiple Choice
Verified
ID- 1485
39. How many meiotic divisions are necessary to produce 100 pollen grains?
(A) 100
(B) 50
(C) 25
(D) 20
Multiple Choice
Verified
ID- 1487
40. Double fertilization means:
(A) Fusion of two eggs
(B) Fusion of eggs and Pollen nuclei with two pollen
(C) Fusion of one Malegamete with Egg and the other with the Secondary Nucleus
(D) Fusion between synergrid cells and male gamete
Multiple Choice
Verified
ID- 1488
41. Pollination by snails is called:
(A) Malacophily
(B) Zoophily
(C) Anemophily
(D) Hydrophily
Multiple Choice
Verified
ID- 1489
42. Development of fruit without fertilization is:
(A) Parthenogenesis
(B) Heterostyly
(C) Parthenocarpy
(D) Agamospermy
Multiple Choice
Verified
ID- 1490
43. Who discovered fertilization?
(A) Mawaschin
(B) Strassburger
(C) Leeuwen Hock
(D) Robert Hook
Multiple Choice
Verified
ID- 1492
44. When pollen tube enter into the nucellus through microphyle is called:
(A) Porogamy
(B) Xenogamy
(C) Mesogamy
(D) Dikogamy
Multiple Choice
Verified
ID- 1493
45. Stalk of ovule is called:
(A) Funicle
(B) Caruncle
(C) Nucellus
(D) Ledicel
Multiple Choice
Verified
ID- 1495
46. Science of cultivation, breeding, marketing and arrangement of flowers is called:
(A) arboriculture
(B) floriculture
(C) horticulture
(D) anthology
Multiple Choice
Verified
ID- 1498
47. This plants flowers are fruit only once in their life time and die after fruiting. These are:
(A) monocarpic plants
(B) polycarpic plants
(C) Vegetative plants
(D) reproductive plants
Multiple Choice
Verified
ID- 1499
48. Which of the following is not a water pollinated plant?
(A) Zostera
(B) Vallisneria
(C) Hudrilla
(D) Cannabis
Multiple Choice
Verified
ID- 1500
49. Male and female flowers are present on different plants (dioecious) to ensure xenogany, in:
(A) papaya
(B) bottle gourd
(C) maize
(D) all of these
Multiple Choice
Verified
ID- 1501
50. The part of gynoecium that determines the compatible nature of pollen is:
(A) stigma
(B) style
(C) ovary
(D) synergrids
Multiple Choice
Verified
ID- 1503
51. The another wall consists of four wall layers where:
(A) tepetum lies just inner to endothecium
(B) middle layers lie between endothecium and tapetum
(C) endothecium lies inner to middle layers
(D) tapetum lies next to epidermis
Multiple Choice
Verified
ID- 1505
52. How many pollen mother cells should undergo meiotic division of produce 64 pollen grains?
(A) 64
(B) 32
(C) 16
(D) 8
Multiple Choice
Verified
ID- 1506
53. In a fully developed male gametophyte the number of nuclei is:
(A) one
(B) five
(C) three
(D) four
Multiple Choice
Verified
ID- 1507
54. The innermost layer of anther is tapetum whose function is:
(A) dehiscene
(B) mechanical
(C) nutrition
(D) protection
Multiple Choice
Verified
ID- 1509
55. When micropyle, chalaza and hilum lie in a straight line, the ovule is said to:
(A) anantropous
(B) orthrotropous
(C) amphitropous
(D) campylotropous
Multiple Choice
Verified
ID- 1511
56. In female gametophyte of a trpical dicot at the time of fertilization is:
(A) 8-celled
(B) 7-celled
(C) 6-celled
(D) 5-celled
Multiple Choice
Verified
ID- 1512
57. Polygonum type of embryo sac is:
(A) 8-nucleate, 7-celled
(B) 8-nucleate, 8-celled
(C) 7-nucleate, 7-celled
(D) 7-nucleate, 3-celled
Multiple Choice
Verified
ID- 1515
58. In angiosperms various stage of reductional divison can best be studied in:
(A) young anthers
(B) mature anthers
(C) young ovules
(D) endosperm cells
Multiple Choice
Verified
ID- 1516
59. Feathery stigma occurs in:
(A) pea
(B) wheat
(C) Datura
(D) Caesalpinia
Multiple Choice
Verified
ID- 1518
60. Fragrant flowers with well developed nectaries are an adaption by:
(A) hydrophily
(B) anemophily
(C) entomphily
(D) malacophily
Multiple Choice
Verified
ID- 1520
61. What is the function of germ pore?
(A) Emergence of radicle
(B) Absorption of water for seed germination
(C) Initiation of pollen tube
(D) All of these
Multiple Choice
Verified
ID- 1521
62. How many meiotic divisions are required for the information of 100 functional megaspores?
(A) 100
(B) 50
(C) 25
(D) 26
Multiple Choice
Verified
ID- 1523
63. Plants with ovaries having only one or a few ovules, are generally pollinated by:
(A) bees
(B) butterflies
(C) birds
(D) wind
Multiple Choice
Verified
ID- 1524
64. The filiform apparatus is present in:
(A) synergids
(B) egg cell
(C) secondary nucleus
(D) antipodals
Multiple Choice
Verified
ID- 1526
65. Anther is generally:
(A) monosporangiate
(B) bisporangiate
(C) tetrasporangiate
(D) trisporangiate
Multiple Choice
Verified
ID- 1527
66. Callase enzyme which dissolves callose of pollen tetrads to separate four pollen is provided by:
(A) pollens
(B) tapetum
(C) middle layers
(D) endothecium
Multiple Choice
Verified
ID- 1528
67. Study of pollen grains is called:
(A) micrology
(B) anthology
(C) palynology
(D) promology
Multiple Choice
Verified
ID- 1530
68. Pollen kitt is generally found in:
(A) anemophilous flowers
(B) entomophilous flowers
(C) ornithophilous flowers
(D) malacophilous flowers
Multiple Choice
Verified
ID- 1532
69. Megasporangium along with its protective integuments is called:
(A) ovary
(B) ovule
(C) funicle
(D) chalaza
Multiple Choice
Verified
ID- 1533
70. Heterostyle is contrivance for cross-pollination is found in:
(A) Pennisetum
(B) Impatiens
(C) Primula vulgaris
(D) Oenothera
Multiple Choice
Verified
ID- 1614
71. Both chasmogamous and cleistogamous flowers are present in:
(A) Helianthus
(B) Commelina
(C) Rosa
(D) Gossypium
Multiple Choice
Verified
ID- 1615
72. Which of these is a condition that makes flowers invariably autogamous?
(A) Dioecy
(B) Self incompatibility
(C) Cleistogamy
(D) Xenogamy
Multiple Choice
Verified
ID- 1616
73. Fusion of one of the male gametes with egg nucleus, is referred to as:
(A) generative fertilization
(B) syngamy
(C) vegetative fertilization
(D) both 'A' and 'B'
Multiple Choice
Verified
ID- 1617
74. An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as:
(A) apospory
(B) appgamy
(C) parthenogenesis
(D) parthenocarpy
Multiple Choice
Verified
ID- 1618
75. The total number of nuclei involved in double fertilization in angiosperms are:
(A) two
(B) three
(C) four
(D) five
Multiple Choice
Verified
ID- 1619
76. Endosperm is completely consumed by the developing embryo in:
(A) pea and groundnut
(B) maize and castor
(C) castor and groundnut
(D) maize and pea
Multiple Choice
Verified
ID- 1620
77. Endospermic seeds are found in:
(A) castor
(B) barley
(C) coconut
(D) all of these
Multiple Choice
Verified
ID- 1621
78. If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be:
(A) 8
(B) 4
(C) 16
(D) 24
Multiple Choice
Verified
ID- 1622
79. The portion of embryonal axis between plumule (future shoot) and cotyledons is called:
(A) hypocotyl
(B) epicotyl
(C) coleorhiza
(D) coleoptile
Multiple Choice
Verified
ID- 1623
80. While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?
(A) Bagging of female flower
(B) Dusting of pollen or stigma
(C) Emasculation
(D) Collection of pollen
Multiple Choice
Verified
ID- 1624
81. The phenomenon wherein, the overy develops into a fruit whichout fertilization is called:
(A) parthenocarpy
(B) apomixis
(C) asexual reproduction
(D) sexual reproduction
Multiple Choice
Verified
ID- 1625
BSEB, 2009, 2014, 2021 (A)
82. Which one forms endosperm after fusion with male gamete?
(A) Oosphere
(B) Synergrids
(C) Antipodals
(D) Secondary nucleus
Multiple Choice
Verified
ID- 1626
BSEB, 2013
83. How many chromosomes are present in endosperm?
(A) n
(B) 2n
(C) 3n
(D) both 'A' and 'C'
Multiple Choice
Verified
ID- 1627
BSEB, 2015, 2021 (A)
84. Aril is edible in which of the following fruits?
(A) Myristica
(B) Litchi
(C) Annona
(D) All of these
Multiple Choice
Verified
ID- 1628
BSEB, 2012
85. Which of the following is not Monoecious?
(A) Papaya
(B) Mustard
(C) Maize
(D) China rose
Multiple Choice
Verified
ID- 1629
BSEB, 2011
86. Which one of the following is unisexual?
(A) Mustard
(B) China rose
(C) Papaya
(D) none of these
Multiple Choice
Verified
ID- 1630
BSEB, 2016
87. Central cell of embryo sac is:
(A) Primary nucleus
(B) Secondary nucleus
(C) Synergid
(D) Both 'A' and 'B'
Multiple Choice
Verified
ID- 1631
BSEB, 2016
88. Arill is edible part of:
(A) Annona
(B) Apple
(C) Orange
(D) All of these
Multiple Choice
Verified
ID- 1632
BSEB, 2016
89. Hydrophilic polination occurs in:
(A) Eichornea
(B) Lotus
(C) Hydrilla
(D) Both 'B' and 'C'
Multiple Choice
Verified
ID- 1633
BSEB, 2016 (C)
90. In wheat, pollinating agent is:
(A) Wind
(B) Insect
(C) Bird
(D) Man
Multiple Choice
Verified
ID- 1634
BSEB, 2016 (C)
91. Ovule develops into:
(A) Fruit
(B) Flower
(C) Seed
(D) Cotyledon
Multiple Choice
Verified
ID- 1635
BSEB, 2016 (C)
92. Anatropous ovule is:
(A) Erect
(B) Inverted
(C) Oblique
(D) None of these
Multiple Choice
Verified
ID- 1636
BSEB, 2017 (A), 2021 (A)
93. Which one is hydrophytic plant?
(A) Trapa
(B) Opuntia
(C) Dulbergia
(D) Acacia
Multiple Choice
Verified
ID- 1637
BSEB, 2017 (A), 2021 (A)
94. Thalamus is edible part of:
(A) Annoma
(B) Apple
(C) Orange
(D) All of these