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Sexual Reproduction In Flowering Plants

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Q426 Allen Sexual Reproduction in Flowering Plants MCQ
Nucellar polyembryony is reported in species of:-
A.
Citrus
B.
Mango
C.
Both (1) & (2)
D.
Capsella
Q427 Allen Sexual Reproduction in Flowering Plants MCQ
When embryo develops from a haploid cell of embryosac, other than egg cell, the process is known as:-
A.
Apogamy
B.
Apospory
C.
Adventive embryony
D.
Diplospory
Q428 Allen ANALYTICAL QUESTIONS MCQ
Which of the following are crucial for the storage of seeds ?
A.
Rehydration
B.
Dehydration
C.
Seed dormancy
D.
Both (2) & (3)
Q429 Allen ANALYTICAL QUESTIONS MCQ
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called :-
A.
Autogamy
B.
Xenogamy
C.
Geitonogamy
D.
Karyogamy
Q430 Allen ANALYTICAL QUESTIONS MCQ
What is common between vegetative reproduction and Apomixis ?
A.
Both produces progeny identical to the parent.
B.
Both are applicable to only dicot plants.
C.
Both bypass the flowering phase.
D.
Both occur round the year.
Q431 Allen ANALYTICAL QUESTIONS MCQ
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
A.
42
B.
63
C.
84
D.
21
Q432 Allen ANALYTICAL QUESTIONS MCQ
Non albuminous seeds are present in :-
A.
Pisum (Pea)
B.
Arachis (Ground nut)
C.
Both
D.
Maize
Q433 Allen ANALYTICAL QUESTIONS MCQ
The coconut water from tender coconut that you are familiar with is :-
A.
Nuclear endosperm
B.
Cellular endosperm
C.
Helobial endosperm
D.
All of the above
Q434 Allen ANALYTICAL QUESTIONS MCQ
Endosperm development precedes embryo development, the endosperm of angiospermic plant is: -
A.
Triploid
B.
Diploid
C.
Haploid
D.
Tetraploid
Q435 Allen ANALYTICAL QUESTIONS MCQ
Which of the following structure is not present in embryo of gram?
A.
Radicle
B.
Hypocotyl
C.
Epicotyl
D.
Coleoptile
Q436 Allen ANALYTICAL QUESTIONS MCQ
The portion of embryonal axis below the level of cotyledon is known as: -
A.
Coleoptile
B.
Hypocotyl
C.
Epicotyl
D.
Coleorrhiza
Q437 Allen ANALYTICAL QUESTIONS MCQ
Double fertilization is essential for the formation of:-
A.
Perisperm
B.
Seed coat
C.
Endosperm
D.
Nucellus
Q438 Allen ANALYTICAL QUESTIONS MCQ
Remnant of nucellus is known as :-
A.
Scutellum
B.
Pericarp
C.
Tigellum
D.
Perisperm
Q439 Allen ANALYTICAL QUESTIONS MCQ
Perisperm is present in :-
A.
Beet
B.
Black pepper
C.
Both (1) & (2)
D.
All angiosperms
Q440 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following pairs of plant structures has haploid number of chromosomes?
A.
Nucellus and antipodal cells
B.
Egg nucleus and secondary nucleus
C.
Megaspore mother cell and antipodal cells
D.
Egg cell and antipodal cells
Q441 Allen ANALYTICAL QUESTIONS MCQ
Seeds are produced without fertilization in some members of :-
A.
Grasses and pulses
B.
Asteraceae
C.
Fabaceae
D.
Orchidaceae
Q442 Allen ANALYTICAL QUESTIONS MCQ
Parthenogenesis occurs when :-
A.
Embryo is formed without the fusion of egg and sperm
B.
Embryo is formed by the fusion of egg and sperm
C.
Embryo is formed from nucellar cell
D.
Sperm produces the embryo directly
Q443 Allen ANALYTICAL QUESTIONS MCQ
In a type of apomixis which is known as adventive embryony, embryos develop directly from the :-
A.
Nucellus or integuments
B.
Synergids or antipodals of an embryosac
C.
Accessory embryosacs in the ovule
D.
Zygote
Q444 Allen ANALYTICAL QUESTIONS MCQ
Development of male gametophyte is :-
A.
In-vivo
B.
In-situ
C.
Both
D.
In-vitro
Q445 Allen ANALYTICAL QUESTIONS MCQ
Apomictic embryos in Citrus arise from :-
A.
Diploid egg
B.
Synergids
C.
Maternal sporophytic tissue in ovule
D.
Antipodal cells
Q446 Allen ANALYTICAL QUESTIONS MCQ
Just before fertilization the diploid structure in the ovule of Capsella is: -
A.
Pollen tube
B.
Nucellus/ Sec. nucleus
C.
Synergids
D.
Antipodals
Q447 Allen ANALYTICAL QUESTIONS MCQ
Free nuclear division in an angiosperm takes place during:-
A.
Pollen formation
B.
Endosperm formation
C.
Embryo formation
D.
Flower formation
Q448 Allen ANALYTICAL QUESTIONS MCQ
Wind pollinated flowers are :-
A.
Small, producing nectar and dry pollen
B.
Small, brightly coloured, producing large number of pollen grains
C.
Small, producing large number of dry pollen grains
D.
Large, producing abundant nectar and pollen
Q449 Allen ANALYTICAL QUESTIONS MCQ
The anterior end of pollen tube burst by the process of\_\_\_in embryo sac:-
A.
Imbibition
B.
Exosmosis
C.
Enzymatic action
D.
Endosomosis
Q450 Allen ANALYTICAL QUESTIONS MCQ
In angiosperms Haploid, diploid and triploid conditions respectively can be traced in :-
A.
Egg, Nucellus, Endosperm
B.
Antipodal, Egg, Endosperm
C.
Endosperm, Nucellus, Synergids
D.
Antipodal, Synergids & Integuments