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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
Q301 Allen POLLINATION MCQ
Advantage of cleistogamy is :-
A.
Vivipary
B.
Higher genetic variability
C.
More vigorous offspring
D.
No dependence on pollinators
Q302 Allen FERTILIZATION MCQ
The main embryo is developed as a result of:-
A.
Pollination
B.
Triple fusion
C.
Syngamy
D.
Fusion of two polar nuclei of an embryo sac
Q303 Allen FERTILIZATION MCQ
Double fertilization is unique character of :-
A.
Gnetum
B.
Adiantum
C.
Lilium
D.
Sphagnum
Q304 Allen FERTILIZATION MCQ
The fusion product of secondary nucleus and male gamete is:-
A.
Nucellus
B.
Primary endosperm nucleus
C.
Zygote
D.
Secondary nucleus
Q305 Allen FERTILIZATION MCQ
The number of nuclei taking part in double fertilization are:-
A.
Two
B.
Three
C.
Four
D.
Five
Q306 Allen FERTILIZATION MCQ
Endosperm is formed during the double fertilization by :-
A.
Two polar nuclei and one male gamete
B.
One polar nuclei and one male gamete
C.
Ovum and male gamete
D.
Two polar nuclei and two male gametes
Q307 Allen FERTILIZATION MCQ
Anthesis is a phenomenon which refers to:ā€”
A.
Formation of pollen
B.
Development of anther
C.
Opening of flower bud
D.
Reception of pollen by stigma
Q308 Allen ENDOSPERM MCQ
Water of coconut is:-
A.
Endosperm
B.
Nucellus
C.
Endocarp
D.
Mesocarp
Q309 Allen ENDOSPERM MCQ
What is the white part of green Coconut :-
A.
Endosperm
B.
Female gametophyte
C.
Nucellus
D.
Embryo
Q310 Allen ENDOSPERM MCQ
Endosperm of angiosperm is :-
A.
2n
B.
3n
C.
n
D.
4n BSR081
Q311 Allen ENDOSPERM MCQ
Free nuclear division in an angiosperm takes place during :-
A.
Pollen formation
B.
Endosperm formation
C.
Embryo formation
D.
Flower formation
Q312 Allen ENDOSPERM MCQ
The coconut water and the edible part of coconut are equivalent to :-
A.
Mesocarp
B.
Embryo
C.
Endosperm
D.
Endocarp
Q313 Allen EMBRYO MCQ
Embryo of sunflower has :-
A.
Two cotyledons
B.
One cotyledon
C.
Eight cotyledons
D.
No cotyledon BSR071
Q314 Allen EMBRYO MCQ
Single shield shaped cotyledon of grass is known as :-
A.
Tigellum
B.
Scutellum
C.
Coleoptile
D.
Coleorrhiza
Q315 Allen EMBRYO MCQ
Epicotyl has a shoot apex and few leaf primordia enclosed in a hollow foliar structure known as :-
A.
Coleoptile
B.
Coleorrhiza
C.
Scutellum
D.
Tigellum
Q316 Allen EMBRYO MCQ
Which of the following is not present in embryo of gram?
A.
Radicle
B.
Hypocotyl
C.
Epicotyl
D.
Coleoptile
Q317 Allen EMBRYO MCQ
The function of suspensor is :-
A.
To provide water
B.
To provide oxygen
C.
To push the embryo towards endosperm to provide more food
D.
To suck food
Q318 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Outer seed coat is known as :-
A.
Aril
B.
Testa
C.
Operculum
D.
Caruncle BSRC
Q319 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Polyembryony was first discovered by:-
A.
Rosenberg
B.
Hofmeister
C.
Leeuwenhoek
D.
Guha
Q320 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Tegmen of the seed develops from:-
A.
Perisperm
B.
Funiculum
C.
Inner integument
D.
Outer integument
Q321 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons ?
A.
Plumule
B.
Cotyledon
C.
Endosperm
D.
Aleurone layer
Q322 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
In albuminous seed, the food is stored in:-
A.
Testa
B.
Plumule
C.
Cotyledon
D.
Endosperm
Q323 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
In epigeal germination cotyledons come up above the soil due to growth of :-
A.
Radicle
B.
Plumule
C.
Epicotyl
D.
Hypocotyl
Q324 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
In which part of embryo maximum growth takes place in hypogeal germination :-
A.
Plumule
B.
Radicle
C.
Epicotyl
D.
Hypocotyl
Q325 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
In seeds, characterised by hypogeal germination, cotyledons generally do not becomes green because :-
A.
They lack mitochondria
B.
They developed very early
C.
They contain inhibitor
D.
They remain below the soil