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Sexual Reproduction In Flowering Plants

247 Questions Start Allen Test
All Exams Allen Errorless
Q51 Allen 3. POLLINATION MCQ
In which one of the following pollination is autogamous ?
A.
Geitonogamy
B.
Xenogamy
C.
Chasmogamy
D.
Cleistogamy
Q52 Allen 3. POLLINATION MCQ
Even in absence of pollinating agents seedsetting is assured in :-
A.
Salvia
B.
Fig (3) Commellina
D.
Zostera
Q53 Allen 3. POLLINATION MCQ
Plants with ovaries having only one or a few ovules, are generally pollinated by :-
A.
Birds
B.
Wind
C.
Bees
D.
Butterflies
Q54 Allen 3. POLLINATION MCQ
Advantage of cleistogamy is :-
A.
Vivipary
B.
Higher genetic variability
C.
More vigorous offspring
D.
No dependence on pollinators
Q55 Allen 4. 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
Q56 Allen 4. FERTILIZATION MCQ
Double fertilization is unique character of :-
A.
Gnetum
B.
Adiantum
C.
Lilium
D.
Sphagnum
Q57 Allen 4. FERTILIZATION MCQ
The fusion product of secondary nucleus and male gamete is:-
A.
Nucellus
B.
Primary endosperm nucleus
C.
Zygote
D.
Secondary nucleus
Q58 Allen 4. FERTILIZATION MCQ
The number of nuclei taking part in double fertilization are:-
A.
Two
B.
Three
C.
Four
D.
Five
Q59 Allen 4. 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
Q60 Allen 4. 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
Q61 Allen 5. ENDOSPERM MCQ
Water of coconut is:-
A.
Endosperm
B.
Nucellus
C.
Endocarp
D.
Mesocarp
Q62 Allen 5. ENDOSPERM MCQ
What is the white part of green Coconut :-
A.
Endosperm
B.
Female gametophyte
C.
Nucellus
D.
Embryo
Q63 Allen 5. ENDOSPERM MCQ
Endosperm of angiosperm is :-
A.
2n
B.
3n
C.
n
D.
4n BSR081
Q64 Allen 5. ENDOSPERM MCQ
Free nuclear division in an angiosperm takes place during :-
A.
Pollen formation
B.
Endosperm formation
C.
Embryo formation
D.
Flower formation
Q65 Allen 5. ENDOSPERM MCQ
The coconut water and the edible part of coconut are equivalent to :-
A.
Mesocarp
B.
Embryo
C.
Endosperm
D.
Endocarp
Q66 Allen 6. EMBRYO MCQ
Embryo of sunflower has :-
A.
Two cotyledons
B.
One cotyledon
C.
Eight cotyledons
D.
No cotyledon BSR071
Q67 Allen 6. EMBRYO MCQ
Single shield shaped cotyledon of grass is known as :-
A.
Tigellum
B.
Scutellum
C.
Coleoptile
D.
Coleorrhiza
Q68 Allen 6. 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
Q69 Allen 6. EMBRYO MCQ
Which of the following is not present in embryo of gram?
A.
Radicle
B.
Hypocotyl
C.
Epicotyl
D.
Coleoptile
Q70 Allen 6. 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
Q71 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Outer seed coat is known as :-
A.
Aril
B.
Testa
C.
Operculum
D.
Caruncle BSRC
Q72 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Polyembryony was first discovered by:-
A.
Rosenberg
B.
Hofmeister
C.
Leeuwenhoek
D.
Guha
Q73 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Tegmen of the seed develops from:-
A.
Perisperm
B.
Funiculum
C.
Inner integument
D.
Outer integument
Q74 Allen 7. 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
Q75 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
In albuminous seed, the food is stored in:-
A.
Testa
B.
Plumule
C.
Cotyledon
D.
Endosperm