Sexual Reproduction In Flowering Plants
247 Questions
Start Allen Test
Q101
Allen
8. PYQ
MCQ
Which of the following are the important floral rewards to the animal pollinators?
A.
Nectar and pollen grains
B.
Floral fragrance and calcium crystals
C.
Protein pellicle and stigmatic exudates
D.
Colour and large size flower
Q102
Allen
8. PYQ
MCQ
Male gametophyte in angiosperms produces:-
A.
Three sperms
B.
Two sperms and a vegetative cell
C.
Single sperm and a vegetative cell
D.
Single sperm and two vegetative cells
Q103
Allen
8. PYQ
MCQ
Coconut water from a tender coconut is :-
A.
Degenerated nucellus
B.
Immature embryo
C.
Free nuclear endosperm
D.
Innermost layers of the seed coat
Q104
Allen
8. PYQ
MCQ
Filiform apparatus is characteristic feature of:
A.
Synergids
B.
Generative cell
C.
Nucellar embryo
D.
Aleurone cell
Q105
Allen
8. PYQ
MCQ
The wheat grain has an embryo with one large, shield-shaped cotyledon known as:-
A.
Coleoptile
B.
Epiblast
C.
Coleorrhiza
D.
Scutellum
Q106
Allen
8. PYQ
MCQ
Which one of the following fruits is parthenocarpic?
A.
Banana
B.
Brinjal
C.
Apple
D.
Jackfruit
Q107
Allen
8. PYQ
MCQ
In angiosperms, microsporogenesis and megasporogenesis :-
A.
occur in ovule
B.
occur in anther
C.
form gametes without further divisions
D.
involve meiosis
Q108
Allen
8. PYQ
MCQ
Flowers are unisexual in :-
A.
Onion
B.
Pea
C.
Cucumber
D.
China rose
Q109
Allen
8. PYQ
MCQ
The coconut water from tender coconut represents:-
A.
Endocarp
B.
Fleshy mesocarp
C.
Free nuclear proembryo
D.
Free nuclear endosperm
Q110
Allen
8. PYQ
MCQ
Proximal end of the filament of stamen is attached to the:-
A.
Anther
B.
Connective
C.
Placenta
D.
Thalamus or petal
Q111
Allen
8. PYQ
MCQ
Which one of the following statements is not true?
A.
Tapetum helps in the dehiscence of anther
B.
Exine of pollen grains is made up of sporopollenin
C.
Pollen grains of many species cause severe allergies
D.
Stored pollen in liquid nitrogen can be used in the crop breeding programmes BSR145
Q112
Allen
8. PYQ
MCQ
Cotyledon of maize grain is called :-
A.
plumule
B.
coleorhiza
C.
coleoptile
D.
scutellum
Q113
Allen
8. PYQ
MCQ
Seed formation without fertilization in flowering plants involves the process of :-
A.
Sporulation
B.
Budding
C.
Somatic hybridization
D.
Apomixis
Q114
Allen
8. PYQ
MCQ
Which of the following statements is not correct?
A.
Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
B.
Insects that consume pollen or nectar without bringing about pollination are called pollen/nectar robbers.
C.
Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
D.
Some reptiles have also been reported as pollinators in some plant species.
Q115
Allen
8. PYQ
MCQ
Which one of the following generates new genetic combinations leading to variation ?
A.
Sexual reproduction
B.
Nucellar polyembryony
C.
Vegetative reproduction
D.
Parthenogenesis
Q116
Allen
8. PYQ
MCQ
In majority of angiosperms: -
A.
Reduction division occurs in the megaspore mother cells
B.
A small central cell is present in the embryo sac
C.
Egg has a filiform apparatus
D.
There are numerous antipodal cells BSR150
Q117
Allen
8. PYQ
MCQ
Pollination in water hyacinth and water lily is brought about by the agency of :-
A.
Birds
B.
Bats
C.
Water
D.
Insects or wind
Q118
Allen
8. PYQ
MCQ
The ovule of an angiosperm is technically equivalent to :-
A.
Megaspore mother cell
B.
Megaspore
C.
Megasporangium
D.
Megasporophyll
Q119
Allen
8. PYQ
Match the Columns
Match column-I with column-II and select the correct option using the codes given below :-
| Column-I | Column-II | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
a-i, b-ii, c-iv, d-iii
B.
a-iii, b-i, c-iv, d-ii
C.
a-iv, b-iii, c-i, d-ii
D.
a-ii, b-i, c-iv, d-iii
Q120
Allen
8. PYQ
MCQ
Functional megaspore in an angiosperm develops into ?
A.
Endosperm
B.
Embryo sac
C.
Embryo
D.
Ovule
Q121
Allen
8. PYQ
MCQ
Attractants and rewards are required for :-
A.
Entomophily
B.
Hydrophily
C.
Cleistogamy
D.
Anemophily
Q122
Allen
8. PYQ
MCQ
Plants which produce characteristic pneumatophores and show vivipary belong to:
A.
Halophytes
B.
Psammophytes
C.
Hydrophytes
D.
Mesophytes
Q123
Allen
8. PYQ
MCQ
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:-
A.
Bee
B.
Wind
C.
Bat
D.
Water
Q124
Allen
8. PYQ
MCQ
A dioecious flowering plant prevents both :-
A.
Autogamy and geitonogamy
B.
Geitonogamy and xenogamy
C.
Cleistogamy and xenogamy
D.
Autogamy and xenogamy
Q125
Allen
8. PYQ
MCQ
Double fertilization is exhibited by :-
A.
Algae
B.
Fungi
C.
Angiosperms
D.
Gymnosperms