SRI CHAITANYA EDUCATIONAL INSTITUTIONS,
A.P.
Sexual
Reproduction in flowering plants
1. The processes of microsporogenesis,
megasporogenesis and embryogenesis occur respectively in
____________,____________, ___________
2. The pollensacs are transversely arranged
in the anther(T/F)
3. Tapetum is the female sporophytic
nutritive tissue(T/F)
4. Pollengrains are meiospores while pollen
mother cells are meiocytes(T/F)
5. The radial walls of endothecium have
thickenings for hygroscopic activity. (T/F)
6. The ratio between the number of male
gametes produced by a male gametophyte and female gametes by a female
gametophyte is____________________
7. The vegetative cell and generative cell
of male gametophyte of angiosperms differ in their
_____________, _________________, __________________,
_____________
8. The pentacarpellary, syncarpous gynoecium
with free stigmas and multicarpellary syncarpous gynoecium without style are
respectively found in_________ ,________________
9. Assertion (A) : The ovule is
called megasporangium.
Reason (R) :
The ovule contains nucellus, in which a megaspore mother cell is differentiated
from the chalagal side.
10. Loranthus
– Anatropous ovule with single integument(T/F)
11. Dolichos
– Compylotropous ovule with two integuments(T/F)
12. Polygonum
– Ovule with micropyle, chalaza and funiculus on the same vertical line(T/F)
13. Helianthus
– Ovule with 1800 of curvature and single integument(T/F)
11. The
typical embryosac of angiosperm is Monosporic with genetically dissimilar 8
haploid nuclei(T/F)
12. The typical embryosac of angiosperm is Monosporic
haploid, with six monokaryotic cells and
one dikaryotic cell(T/F)
13. The
typical embryosac of angiosperm is Monosporic with egg apparatus of 3 cells,
antipodals of 3 cells and one central cell(T/F)
14. The
typical embryosac of angiosperm is Monosporic, develops from a single megaspore
with 7 free nuclear divisions(T/F)
16. The
typical embryosac of angiosperm has Central cell in between chalazal egg
apparatus and micropylar antipodals (T/F)
17. The
typical embryosac of angiosperm has Central cell in between micropylar egg
apparatus and chalazal antipodals (T/F)
18. The
typical embryosac of angiosperm has Egg apparatus and central cell of chalazal
side and antipodals of micropylar side (T/F)
19. The
typical embryosac of angiosperm has Egg apparatus of micropylar side and
peripheral antipodals and central cell (T/F)
20. The
growth of pollen tube is directed into the embryosac through synergid by
Filiform apparatus (T/F)
21. The
total number of genomes in all the cells of angiospermic typical embryosac
together is____
22. Assertion (A) : Pollination is compulsory
for fertilization in spermatophytic plants.
Reason (R) : The type of fertilization in all
spermatophytes is double fertilization
23. Unexposed stamens is not a character of
anemorphilous flowers. (T/F)
24. Diclinous flowers may be autogamous (or)
allogamous. (T/F)
25. Majority of hydrophytes have entomophilous
flowers . (T/F)
26. Chasmogamous flowers are always allogamous.
(T/F)
27. Cleistogamous flowers may be autogamous
(or) Geitonogamous. (T/F)
28. Due to bursting of pollen tube after
entering the embryosac, the male gametes are first released into the Cytoplasm
of synergid(T/F)
29. When tetraploid (4x) female plant is
crossed with hexaploid (6x) male plant, with basic set number of chromosomes is
9, then the number of nuclei, the number of genomes and the number of
chromosomes respectively participate in double fertilization respectively are
___________, __________, ________
30. Assertion (A) : The second nuclear fusion
of double fertilization is called triple fusion
Reason (R) : The second fertilization of double
fertilization involves the fusion the two male gametic nuclei and one female
gametic nucleus
31. Coconut contains both nuclear endosperm
and cellular endosperm. (T/F)
32. Find the ratio between the following
structures with endosperm and without endosperm.
A) Castor seed B) Ground nut seed C) Coconut fruit
D) Bean seed E) Maize seed F)Pea
seed Ans__________
33. Coleoptile and coleorhizae are structures
of monocot embryo that are not found in dicot embryo (T/F)
34. Ploidy
of food storing tissue in the seeds of Ricinus and Pea respectively_____ ,
_____
35. Epiblast
refers to a flap like outgrowth of Coleorhiza(T/F)
36. Diploid nutritive tissue in the seeds of
black pepper and beet root is Endosperm(T/F)
37. Size of orchid seed is 85 micrometers(T/F)
38. Weight of orchid seed is 0.81 micrograms(T/F)
39. Length of Seed of Lodecia is 30 cm (T/F)
40. Circumference of seed of Lodoecia is 18 cm(T/F)
41. Seed of Phoenix dactylifera with long viability was discovered in
archeological excavation at king Herod’s palace near the Dead Sea(T/F)
42. Apomictic seeds are found in some species of
Asteraceae and Grasses(T/F)
43. Seeds of orange contain many embryos of
different sizes and shapes(T/F)
44. Apomixis is a form of asexual reproduction
that mimics sexual reproduction(T/F)
45. Double coconut is a worlds largest plant
that gives rise to largest seeds(T/F)
46. Dehydration and dormancy of mature seeds
are crucial for storage of seeds for future use(T/F)
47. Seeds of different species have better
adaptive strategies for dispersal to new habitats to colonise.
(T/F)
48. Seeds have sufficient reserve food
materials to nourish young seedlings until they are capable to
prepare food materials(T/F)
49. Structures that encloses radicle and
plumule of embryonal axis of grass respectively are
___________________ & _______________
50. Assertion(A): Fruits can attract the
animals by providing food for the
dispersal of the seeds
Reason(R):
Seed dispersal in figs is carried out by Blastophaga
51. Micropyle of the fertilized ovule
facilitates the entry of pollentube into the embryosac(T/F)
52. Dispersal of seeds in coconut carried out
by water. (T/F)
53. Seeds of Lodoecia measures 30mm long nearly 90 mm in circumference. (T/F)
54. Epiblast is seen in L.S. of an embryo of
grass. (T/F)
55. Seeds of Phoenix
dactylifera plant were discovered during archeological excavation at King
Herod’s palace near the Dead Sea(T/F)
56. The seed of lupin germinate and flower
after an estimated dormancy period of_________ years
57. The proximal part of stalk of the stamen
is never attached to the thalamus (or) petals(T/F)
58. According to botanist flowers are morphological and
embryological marvels and the sites of sexual reproduction (T/F)
59. Embryology deals with study of only
development of embryo from zygote.(T/F)
60. Several hormonal and structural changes
occur prior to initiation of flowering. (T/F)
61. Assertion(A): Pollen grains which are
shed at 3 celled stage never produce pollen tubes after germination
Reason(R):
Pollen grains which are shed at 3 celled
stage contain two male gametes
62. A single female gamete is formed in the
female gametophyte of an angiosperm(T/F)
63. A single female gametophyte is formed in
the ovule of an angiosperm(T/F)
64. A single ovule may be formed in the ovary
of an angiosperm(T/F)
65. Seven haploid cells are formed in the
polygonum type of embryosac of an angiosperm(T/F)
66. Xenogamy is possible in monoecious
sporophytes (T/F)
67. Xenogamy is occurs only in dioecious
sporophytes(T/F)
68. Xenogamy is possible in bisexual flowers (T/F)
69. Xenogamy is occur only in unisexual
flowers (T/F)
70. Megaspore mother cell directly acts like
mother cell for the development of embryosac (T/F)
71. In polygonum type of embryosac, megaspore
mother cell gives rise to four haploid tetrads(T/F)
72. The ploidy of embryosac is octaploid(T/F)
73. In polygonum free nuclear divisions occur
in functional megaspore till the formation
of 8 nucleated
stage(T/F)
74. Pollen viability is mainly depends on the
prevailing temperature and humidity(T/F)
75. All members of Rosaceae, Leguminoseae and
Solanaceae maintain Pollen viability for
months(T/F)
76. All members of Rosaceae, Leguminoseae and
Solanaceae maintain Pollen viability for
years(T/F)
77. Rice and wheat lose pollen viability
within 30 minutes of their release(T/F)
78. In porogamy, mesogamy and chalazogamy pollen tube enters the
embryosac through micropyle of the ovule(T/F)
79. In mesogamy, pollen tube enters the ovule
either through integument or funicle. (T/F)
80. Anemophilous flowers often have single
ovule in each ovary.(T/F)
81. All hydrophytes are hydrophilous in
nature.(T/F)
82. Pollen grains of entomophilous flowers
are generally sticky in nature.(T/F)
83. In most of the hydrophilous species
pollen grains are protected by wetting from mucilaginous
covering. (T/F)
84. Inflorescence
of Amorphophallus provides safe
places to bats to sustain during unfavourable
Conditions (T/F)
85. Yucca plant and moth cannot complete
their life cycles without each other.(T/F)
86. Larvae of the moth come out of the eggs
at the time of pollen liberation from the stamens of Yucca flower. (T/F)
87. Pollen
robbers are useful to the plant in cross pollination with desirable species.(T/F)
88. Flowers
pollinated by flies and beetles attract these insects by Secrete ______
odours
89. Characters
of entomophilous flowers are Large, colourless & scented flowers. (T/F)
90. Dioecious
condition prevents Autogamy or Geitonogamy.
(T/F)
91. Self
pollination occurs but not self fertilization in Abutilon(T/F)
92. Only
xenogamy occurs in Papaya. (T/F)
93. In Solanum stigma becomes receptive even
before pollen of the same flower is produced. (T/F)
94. All
pollen grains reach the stigma at two celled stage only. (T/F)
95. Continuous
cross pollinations results in inbreeding depression. (T/F)
96. In
chalazogamy pollen tube enters the embryosac through micropylar end. (T/F)
97. Pollen
tube releases one male gamete into each of the synergids. (T/F)
98. Double fertilization occurs in all dicots
and monocots. (T/F)
99. Syngamy
and double fertilization are together known as triple fusion. (T/F)
100. Product
of syngamy develops into endosperm. (T/F)
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