18
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :
19
Diadelphous stamens are found in
20
A typical angiosperm embryo sac at maturity is :
21
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
22
The body of the ovule is fused within the
funicle at
23
The plant parts which consist of two generations
- one within the other
(i) Pollen grains inside the anther
(ii) Germinated pollen grain with two male
gametes
(iii) Seed inside the fruit
(iv) Embryo sac inside the ovule
24
What is the fate of the male gametes discharged in the synergid?
25
Persistent nucellus in the seed is known as
26
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is :
27
Pinus seed cannot germinate and establish without fungal association. This is because :
28
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as :
29
Which one of the following statements regarding post-fertilization development in flowering plants is
incorrect?
31
Winged pollen grains are present in
32
Which of the following has proved helpful in
preserving pollen as fossils?
33
Flowers which have single ovule in the ovary and are packed into inflorescence are usualy pollinated by
34
Attractants and rewards are required for
35
A dioecious flowering plant prevents both
36
Functional megaspore in an angiosperm develops into an
37
Double fertilisation is exhibited by
38
The ovule of an angiosperm is technically equivalent to
39
Pollination in water hyacinth and water lily is brought about by the agency of
40
In majority of angiosperms
41
Proximal end of the filament of stamen is attached to the
42
Seed formation without fertilisation in flowering plants involves the process of
43
Which one of the following statements is not true?
44
The coconut water from tender coconut represents
45
Which of the following statements is not correct?
46
In angiosperms, microsporogenesis and mega-sporogenesis
47
Filiform apparatus is characteristic feature of
49
Coconut water from a tender coconut is
50
Which one of the following fruits is parthenocarpic?
51
Male gametophyte in angiosperms produces
52
The hilum is a scar on the
AIPMT 2015 Cancelled Paper
53
Which one of the following may require pollinators, but is genetically similar to autogamy?
AIPMT 2015 Cancelled Paper
54
Which of the following are the important floral rewards to the animal pollinators ?
AIPMT 2015 Cancelled Paper
55
Which one of the following statements is not true?
AIPMT 2015 Cancelled Paper
56
Transmission tissue is characteristic feature of
AIPMT 2015 Cancelled Paper
57
Pollen tablets are available in the market for
58
Which one of the following shows isogamy with non-flagellated gametes?
59
An aggregate fruit is one which develops from
61
Function of filiform apparatus is to
62
Non-albuminous seed is produced in
63
Animal vectors are required for pollination in
64
Albuminous seeds store their reserve food mainly in
65
Which one of the following statements is correct?
66
Megaspores are produced from the megaspore mother cells after
67
Which of the following statements is correct?
69
Seed coat is not thin, membranous in
70
Perisperm differs from endosperm in
71
Advantage of cleistogamy is
72
Megasporangium is equivalent to
73
Which one of the following statements is correct?
74
Product of sexual reproduction generally generates
75
Plants with ovaries having only one or a few ovules, are generally pollinated by
76
Which one of the following statements is wrong?
77
What is the function of germ pore?
78
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
79
Even in absence of pollinating agents seed-setting is assured in
80
Which one of the following is correctly matched?
81
Both, autogamy and geitonogamy are prevented in
82
What is common between vegetative reproduction and apomixts?
83
In angiosperms, functional megaspore develops into
84
Wind pollination is common in
85
The ''eyes'' of the potato tuber are
86
Which one of the following pollinations is autogamous?
87
Nucellar polyembryony is reported in species of
88
Filiform apparatus is a characteristic feature of
89
Vegetative propagation in Pistia occurs by
91
Wind pollinated flowers are
92
Apomictic embryos in Citrus arise form
93
Transfer of pollen grains from the another to the stigma of another flower of the same plant is called
94
Vegetative propagation in mint occurs by
95
Which one of the following is resistant to enzyme action?
96
Unisexuality of flowers prevents
97
Which one of the following pairs of plant structures has haploid number of chromosomes ?
98
What does the filiform apparatus do at the entrance into ovule?
99
Which one of the following is surrounded by a callose wall?
100
Male gametes in angiosperms are formed by the division of
101
Two plants can be conclusively said to belong to the same species if they
102
The arrangement of the nuclei in a normal embryo sac in the dicot plants is
103
In a cereal grain the single cotyledon of embryo is represented by
104
Parthenocarpic tomato fruits can be produced by
105
In a type of apomixis known as advice embryony, embryos develop directly from the
106
Through which cell of the embryo sac, does the pollen tube enter the embryo sac?
107
Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other?
108
When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is
109
Anthesis is a phenomenon which refers to
110
An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
111
In a flowering plant, archesporium gives rise to
112
What is the direction of micropyle in anatropous ovule?
113
In angiosperm all the four microspores of tetrad are covered by a layer which is formed by
114
In angiosperms pollen tube liberate their male gametes into the
115
In grasses what happens in microspore mother cell for the formation of mature pollen grains?
116
Adventive embryony in Citrus is due to
117
Anemophily type of pollination is found in
118
Endosperm is formed during the double fertilization by
119
Eight nucleated embryo sac is
