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Sexual Reproduction In Flowering Plants

247 Questions Start Allen Test
All Exams Allen Errorless
Q176 Allen 10. Sexual Reproduction in Flowering Plants MCQ
Chasmocleistogamous flowers are present in:-
A.
Viola (common pansy)
B.
Oxalis
C.
Commelina
D.
All of the above
Q177 Allen 10. Sexual Reproduction in Flowering Plants MCQ
Although in most of species fruits are result of fertilisation, there are a few species in which fruit develops without fertilisation - process is known as:-
A.
Parthenocarpy
B.
Parthenogenesis
C.
Amphimixis
D.
Apomixis
Q178 Allen 10. Sexual Reproduction in Flowering Plants MCQ
One of the male gamete moves towards the egg cell & fuses with it, the process is known as:
A.
Syngamy
B.
Triple fusion
C.
Double fertilization
D.
Autogamy
Q179 Allen 10. Sexual Reproduction in Flowering Plants MCQ
Nucellar polyembryony is reported in species of:-
A.
Citrus
B.
Mango
C.
Both (1) & (2)
D.
Capsella
Q180 Allen 10. 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
Q181 Allen 11. 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)
Q182 Allen 11. 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
Q183 Allen 11. 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.
Q184 Allen 11. 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
Q185 Allen 11. ANALYTICAL QUESTIONS MCQ
Non albuminous seeds are present in :-
A.
Pisum (Pea)
B.
Arachis (Ground nut)
C.
Both
D.
Maize
Q186 Allen 11. 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
Q187 Allen 11. ANALYTICAL QUESTIONS MCQ
Endosperm development precedes embryo development, the endosperm of angiospermic plant is: -
A.
Triploid
B.
Diploid
C.
Haploid
D.
Tetraploid
Q188 Allen 11. ANALYTICAL QUESTIONS MCQ
Which of the following structure is not present in embryo of gram?
A.
Radicle
B.
Hypocotyl
C.
Epicotyl
D.
Coleoptile
Q189 Allen 11. ANALYTICAL QUESTIONS MCQ
The portion of embryonal axis below the level of cotyledon is known as: -
A.
Coleoptile
B.
Hypocotyl
C.
Epicotyl
D.
Coleorrhiza
Q190 Allen 11. ANALYTICAL QUESTIONS MCQ
Double fertilization is essential for the formation of:-
A.
Perisperm
B.
Seed coat
C.
Endosperm
D.
Nucellus
Q191 Allen 11. ANALYTICAL QUESTIONS MCQ
Remnant of nucellus is known as :-
A.
Scutellum
B.
Pericarp
C.
Tigellum
D.
Perisperm
Q192 Allen 11. ANALYTICAL QUESTIONS MCQ
Perisperm is present in :-
A.
Beet
B.
Black pepper
C.
Both (1) & (2)
D.
All angiosperms
Q193 Allen 11. 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
Q194 Allen 11. ANALYTICAL QUESTIONS MCQ
Seeds are produced without fertilization in some members of :-
A.
Grasses and pulses
B.
Asteraceae
C.
Fabaceae
D.
Orchidaceae
Q195 Allen 11. 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
Q196 Allen 11. 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
Q197 Allen 11. ANALYTICAL QUESTIONS MCQ
Development of male gametophyte is :-
A.
In-vivo
B.
In-situ
C.
Both
D.
In-vitro
Q198 Allen 11. ANALYTICAL QUESTIONS MCQ
Apomictic embryos in Citrus arise from :-
A.
Diploid egg
B.
Synergids
C.
Maternal sporophytic tissue in ovule
D.
Antipodal cells
Q199 Allen 11. 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
Q200 Allen 11. ANALYTICAL QUESTIONS MCQ
Free nuclear division in an angiosperm takes place during:-
A.
Pollen formation
B.
Endosperm formation
C.
Embryo formation
D.
Flower formation