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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
Q251 Allen MALE REPRODUCTIVE ORGAN MCQ
Example of polyploid tissue present in an angiosperm plant is:-
A.
Perisperm
B.
Embryo
C.
Tapetum
D.
Placenta
Q252 Allen MALE REPRODUCTIVE ORGAN MCQ
Pollen grain represents:-
A.
Female gametophyte
B.
Male gametophyte
C.
Sporophyte
D.
Anther
Q253 Allen MALE REPRODUCTIVE ORGAN MCQ
Anther is generally composed of:-
A.
One sporangium
B.
Two sporangia
C.
Three sporangia
D.
Four sporangia
Q254 Allen MALE REPRODUCTIVE ORGAN MCQ
How many cells or nuclei are present in mature male gametophyte of angiosperm?
A.
One
B.
Two
C.
Three
D.
Many
Q255 Allen MALE REPRODUCTIVE ORGAN MCQ
How many and what type of male gametes are produced by the male gametophyte of angiosperm?
A.
One, multi cilliated
B.
Two, biciliated
C.
Two, multi ciliated
D.
Two, non-motile
Q256 Allen MALE REPRODUCTIVE ORGAN MCQ
Sporopollenin is found in :-
A.
Exine
B.
Intine
C.
Cytoplasm
D.
Nucleus
Q257 Allen MALE REPRODUCTIVE ORGAN MCQ
Microsporophyll of Angiosperms is known as:
A.
Androecium
B.
Anther
C.
Filament
D.
Stamen
Q258 Allen MALE REPRODUCTIVE ORGAN MCQ
Main function of endothecium (in anther) is :
A.
Mechanical
B.
Nutritive
C.
Dehiscence
D.
Storage
Q259 Allen MALE REPRODUCTIVE ORGAN MCQ
Male gametes in angiosperms are formed by the division of :-
A.
Microspore mother cell
B.
Microspore
C.
Generative cell
D.
Vegetative cell
Q260 Allen MALE REPRODUCTIVE ORGAN MCQ
Which one of the following statements is correct?
A.
Tapetum nourishes the developing pollen
B.
Hard outer layer of pollen is called intine
C.
Sporogenous tissue is haploid
D.
Endothecium produces the micorspores
Q261 Allen MALE REPRODUCTIVE ORGAN MCQ
Which one of the following is surrounded by a callose wall ?
A.
Pollen grain
B.
Microspore mother cell
C.
Male gamete
D.
Egg
Q262 Allen MALE REPRODUCTIVE ORGAN MCQ
How many pollen sacs are present in a mature anther ?
A.
4
B.
1
C.
3
D.
2
Q263 Allen MALE REPRODUCTIVE ORGAN MCQ
The special features of the endothecium of anther :-
A.
Radially elongated cells
B.
Thickening of Ī±-cellulose
C.
Hygroscopic
D.
All of the above
Q264 Allen MALE REPRODUCTIVE ORGAN MCQ
The vegetative cell gives rise to:-
A.
Male gametes
B.
Tube nucleus
C.
Pollen tube
D.
Exine
Q265 Allen MALE REPRODUCTIVE ORGAN MCQ
'Callase' enzyme which dissolve callose of tetrad of microspores to separate 4 microspores is provided by:-
A.
Pollen grains
B.
Middle layer
C.
Tapetum
D.
Endothecium
Q266 Allen MALE REPRODUCTIVE ORGAN MCQ
In Angioperms all the four microspores of tetrad are covered by a layer which is made up of :-
A.
Pectocellulose
B.
Callose
C.
Cellulose
D.
Sporopollenin
Q267 Allen MALE REPRODUCTIVE ORGAN MCQ
Monothecous anther is found in which family:-
A.
Malvaceae
B.
Liliaceae
C.
Brassicaceae
D.
Asteraceae
Q268 Allen MALE REPRODUCTIVE ORGAN MCQ
The nutritive layer of microsporangia of Capsella is :-
A.
Endothecium
B.
Exothecium
C.
Sporogenous tissue
D.
Tapetum
Q269 Allen MALE REPRODUCTIVE ORGAN MCQ
Microspore mother cell produce microspores by :-
A.
Meiosis and Mitosis
B.
Mitosis
C.
Meiosis
D.
Mitosis and Amitosis
Q270 Allen MALE REPRODUCTIVE ORGAN MCQ
Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of :ā€”
A.
Cutin
B.
Suberin
C.
Sporopollenin
D.
Callose
Q271 Allen FEMALE REPRODUCTIVE ORGAN MCQ
Essential whorls of a flowers are :-
A.
Calyx and Corolla
B.
Corolla and Gynoecium
C.
Androecium and Gynoecium
D.
All of the above
Q272 Allen FEMALE REPRODUCTIVE ORGAN MCQ
Which one is female gametophyte?
A.
Embryo
B.
Embryo sac
C.
Endosperm
D.
Pistil
Q273 Allen FEMALE REPRODUCTIVE ORGAN MCQ
The functional megaspore in Capsella is always:-
A.
Micropylar
B.
Chalazal
C.
AIll
D.
Any
Q274 Allen FEMALE REPRODUCTIVE ORGAN MCQ
Filiform apparatus are found in:-
A.
Antipodal cell
B.
Egg cell
C.
Secondary nucleus
D.
Synergids
Q275 Allen FEMALE REPRODUCTIVE ORGAN MCQ
Megasporophyll is called:-
A.
Stamen
B.
Carpel
C.
Ovary
D.
Stigma