Sexual Reproduction in Flowering Plants
Multiple Choice Question and Answer
1. _____ of the following represents a pollen grain.
a. Megaspore
b. Microspore
c. Sperm
d. Male gamete
Ans: b
2. _____ of the following is called as the first cell of gametophyte.
a. Pollen grain
b. Egg cell
c. Megaspore
d. Microspore
Ans: c
3. The mature female gametophyte of angiosperms is called _____.
a. Pollen grain
b. Embryo sac
c. Egg apparatus
d. Prothallus
Ans: b
4. The first cell of male gametophyte in angisperm is _____.
a. Sperm
b. Pollen grain
c. Embryo sac
d. Seed
Ans: b
5. Triple fusion involves the fusion of _____.
a. One male gamete and two synergids
b. One male gamete, one polar nucleus and one egg cell
c. One male gamete and two antipodals
d. One male gamete and two polar nuclei
Ans: d
6. The filiform apparatus is found in ______.
a. Antipodals
b. Pollen grains
c. Synergids
d. Egg cell
Ans: c
7. The radical of embryo gives rise to _____.
a. Shoot
b. Root
c. Epicotyle
d. Hypocotyle
Ans: b
8. The development of sporangium which takes place from a group of initial cells, is called _____.
a. Leptosporangiate
b. Pseudosporangiate
c. Euspoangiate
d. Oligosporangiate
Ans: c
9. Which of the following help in achieving cross pollination ?
a. Dichogamy
b. Cleistogamy
c. Heterostyle
d. All of these
Ans: d
10. When first division of endosperm nucleus is followed by wall formation and rest are free nuclear, such a development of endosperm is called ____.
a. Nuclear type
b. Cellular type
c. Helobiall type
d. Pronuclear type
Ans: c
11. Synergids of the embryo sac on development gives rise to ______.
a. Hypocotyl
b. Suspensor of embryo
c. Tegmen
d. None of these
Ans: d
12. Natural barrier between anthers and stigma to prevent self pollination, is called ______.
a. Interspecific incompatibility
b. Intra-specific incompatibility
c. Cross incompatibility
d. None of these
Ans: b
13. ______ of the following is false about endosperm of anglosperm.
a. It is a sporophytic tissue
b. It provides nutrition to embryo
c. It is triploid
d. It forms the radical of embryo
Ans: d
14. Palynology is the study of ______.
a. Fruits
b. Megaspore
c. Microspore
d. Anthers
Ans: c
15. The type of pollination in Vallisneria is ____.
a. Chiropterophillous
b. Hydrophillous
c. Anemophillous
d. Campylotropous
Ans: b
16. ____ of the ovule type is found in Cycas.
a. Circinotropous
b. Orthotropous
c. Anatropous
d. Campylotropous
Ans: b
17. Most of the work in the field of plant embryology in India has been carried out by _______.
a. P. Maheswari
b. Bhojwani
c. Kashyap
d. Birbal Sahni
Ans: a
18. The process of double fertilization was discovered by ______.
a. Nawaschin
b. Stasburger
c. Sargent
d. None of these
Ans: a
19. The fusion product of polar nuclei and male gamete is _____.
a. Srcondary nucleus
b. Triple fusion
c. Primary endosperm nucleus
d. Zygote
Ans: c
20. If a microspore of an angiosperm contain 12 chromosomes. The number of chromosomes in the enospermal cell will be _____.
a. 18
b. 6
c. 24
d. 36
Ans: d
21. In angiosperms, pollen grains produce _____.
a. Female gametophyte
b. Soiriohyte
c. Male gametophyte
d. All of these
Ans: c
22. The innermost layer of the anther wall is called _____.
a. Endothecium
b. Endodermis
c. Tapetum
d. Nucellus
Ans: c
23. In mature ovule, if hilumis close to micropyle, then ovule is called ______.
a. Orthotropous
b. Anatropous
c. Hemitropous
d.Campylotropous
Ans: b
24. The microspore developes into a _______.
a. Megaspore
b. Megagametophyte
c. Microsporocyte
d. Microgametophyte
Ans: d
25. The short stem tip to which a flower is attached is called a _____.
a. Pistil
b. Sepal
c. Receptacle
d. Petal
Ans: c
26. One of the parts in the outermost ring of floral structures, forming a bud cover, is a _____.
a. Pistil
b. Sepal
c. Receptacle
d. Petal
Ans: b
27. The site of formation of pollen grains is in the ______.
a. Pistil
b. Filament
c. Receptacle
d. Anther
Ans: d
28. The stigma, style, and ovary are located in a _______.
a. Pistil
b. Sepal
c. Receptacle
d. Petal
Ans: a
29. The anther and filament are the parts of the ______.
a. Pistil
b. Sepal
c. Stamen
d. Petal
Ans: c
30. The structure that forms most of the flesh of an apple is the ________.
a. Pistil
b. Sepal
c. Receptacle
d. Petal
Ans: c
31. Ovules are contained with the _____.
a. Megasporophyll
b. Microsporophyll
c. Microsporangium
d. Megasporangium
Ans: a
32. A megasporocyte would be found in the ______.
a. Ovary
b. Stigma
c. Ovule
d. Style
Ans: c
33. A microspore mother cell would be located in the _______.
a. Ovary
b. Stigma
c. Anther
d. Filament
Ans: c
34. Pollen would land on the ______ during pollination.
a. Ovary
b. Stigma
c. Anther
d. Filament
Ans: d
35. ______ structure of an ebryo withina seed is not correctly identified.
a. A cotyledon is a seed leaf
b. The radical is the embryonic root
c. The entire embryonic shoot is called the hilum.
d. The plumule gives embryonic shoot.
Ans: c
36. When a flower meristem is used to clone plants, embryo-like structures called _____ form at the top of callus.
a. Protoplasts
b. Somatic buds
c. Clones
d. Somatic embryos
Ans: d
37. The mature microspore of a seed plant is called ______.
a. Microgametophyte
b. Microsporophyte
c. Pollen grain
d. Microsporangium
Ans: a
38. Most common type of ovule is ________.
a. Campylotropous
b. Circinotropous
c. Anatropous
d. Heminatropous
Ans: c
39. Ovule represents _______.
a. Microsporangium
b. Megasporangium
c. Female gametophyte
d. Embryo
Ans: d
40. Ovule sis attached to placenta by a slender stalk called ________.
a. Pedical
b. Petiole
c. Placenta
d. Funicle
Ans: d
41. The fertilization occurs inside the ________.
a. Ovule
b. Anther
c. Nucellus
d. Stigma
Ans: a
42. Passage of pollen tube though micropyle while reaching the embryo sac is ______.
a. Mesogamy
b. Porogamy
c. Dicliny
d. Dichogamy
Ans: d
43. In ovule meiosis occurs in _______.
a. Megaspore
b. Megaspore mother cell
c. Endosperm
d. Integuments
Ans: b
44. A pollen grain is best defined as ______.
a. Spore mother cell
b. Male sperm
c. First cell of male gametophyte
d. Partially developed embryo
Ans: c
45. Anemophily occurs in ________.
a. Salvia
b. Vallisnaria
c. Coconut
d. Bottle brush
Ans: c
46. Sexual reproduction of flowering plants was discovered by ______.
a. camerarius
b. Nawaschin
c. Strasburger
d. Bottle brush
Ans: a
47. Formation of embryo directly from nucellus and integument is __________.
a. Adventitive polyembryony
b. Apospory
c. Apogamy
d. Apomixes
Ans: a
48. When chalaza and micropyle arwe at 360 degree to each other, such ovule is called ______.
a. Orthotropous
b. anatropous
c. Circinotropous
d. None of the above
Ans: c
49. If an endosperm cell of an angiosperm contains 24 chromosomes. The number of chromosomes in each cell of leaf will be ______.
a. 8
b. 4
c. 16
d. 24
Ans: c
50. In Casuraina fertilization occurs through _______.
a. Chalazogamy
b. Mesogamy
c. Porogamy
d. Apogamy
Ans: a
51. Intraspecific incompatibility is overcome by ______.
a. Self pollination
b. Wetting of anthers
c. Wetting of stigmas
d. Mixed pollination
Ans: d
52. Effect of pollen on character of pericarp and seed coat is ______.
a. Xenia
b. Metaxenia
c. Chimera
d. Ruminate endosperm
Ans: b
53. Function of guiding and attracting pollen tube is done by ______.
a. Antipodal cells
b. Egg cell
c. Synergids
d. Secondary nucleus
Ans: c
54. Pollen grains are able to tolerate extremes of temperature and desiccation as its exine is made of ______.
a. Sporopollenim
b. Suberin
c. Cutin
d. Callose
Ans: a
55. A diploid female plant is crossed with tetraploid male. The ploidy of endosperm will be________.
a. Tetraploidy
b. Triploidy
c. Pentaploidy
d. Diploidy
Ans: c
56. Pollen grains in angiosperms develops from _____.
a. Endothecium
b. Tapetum
c. Sporogenous
d. Middle layer
Ans: c
57. In double fertilization ________.
a. Two male gametes fuse with two eggs
b. One male gamete fuses with the egg and the other fuses with secondary nucleus
c. One male gamete fuses with egg and the other fuses with antipodal
d. One male gamete fuses with antipodal and the other fuses with diploid nucleu
Ans: b
58. Cleistogamous flower are _______.
a. Self pollinated
b. Insect pollinated
c. Bird pollinated
d. Wind pollinated
Ans: a
59. In angiosperms, embryo sac represents _________.
a. Female gametophyte
b. Sporophyte
c. Male gametophyte
d. None of these
Ans: a
60. Apomixes in plant means, development of a plant _________.
a. By fusion of gametes
b. Without fusion of gametes
c. From tissue culture
d. From sexual reproduction
Ans: b