-
question_answer1)
Intine of pollen grains is composed of
A)
Lipid and protein done
clear
B)
Cellulose and pectin done
clear
C)
Lignin and cutin done
clear
D)
Pectin and lignin done
clear
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question_answer2)
Another is generally composed of
A)
One sporangium done
clear
B)
Two sporangium done
clear
C)
Three sporangium done
clear
D)
Four sporangium done
clear
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question_answer3)
A microspore mother cell forms
A)
An ovule done
clear
B)
An embryo sac done
clear
C)
A pollen sac done
clear
D)
Pollen grains done
clear
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question_answer4)
At the time of pollination, how many cells are formed in the pollen grains
A)
One done
clear
B)
Two done
clear
C)
Three done
clear
D)
Four done
clear
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question_answer5)
Generally in the wall of the anther lobes how many middle layers are formed
A)
Seven done
clear
B)
Three done
clear
C)
Six done
clear
D)
Nine done
clear
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question_answer6)
Branched type of pollen tube is formed in
A)
Cucurbita done
clear
B)
Salvia done
clear
C)
China rose done
clear
D)
Solanum done
clear
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question_answer7)
Endothecium layer of anther lobes is present
A)
Outside the epidermis done
clear
B)
Just inside the epidermis done
clear
C)
In the innermost layer done
clear
D)
In the middle region done
clear
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question_answer8)
If the leaf cell has 8 chromosomes, it is most likely that
A)
Zygote will have 4 chromosomes done
clear
B)
Gametes will have 8 chromosomes done
clear
C)
Gametes will have 4 chromosomes done
clear
D)
Zygote will have 16 chromosomes done
clear
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question_answer9)
During meiosis in pollen mother cell the daughter cells are interconnected by passages. The whole structure is called
A)
Symplast done
clear
B)
Plasmodesmata done
clear
C)
Syncytium done
clear
D)
Coenocyte done
clear
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question_answer10)
Before dehiscence of anther
A)
Middle layers enlarge done
clear
B)
Endothecium develops fibrous thickenings done
clear
C)
Tapetum develops fibrous thickenings done
clear
D)
Epidermis degenerates done
clear
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question_answer11)
Pollinia are sac like structures
A)
Which secrete yellow substance called pollen kit done
clear
B)
Which are found in megasporangia done
clear
C)
In which anther lobes are present done
clear
D)
In which pollen grains are present in mass done
clear
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question_answer12)
Tectum, baculum, foot layer are the different parts of
A)
Microspore wall done
clear
B)
Microspore mother cell wall done
clear
C)
Megaspore wall done
clear
D)
Megaspore mother cell wall done
clear
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question_answer13)
A schematic illustration of the pollen grain is called
A)
Pollenogram done
clear
B)
Palenogram done
clear
C)
Histogram done
clear
D)
Parallelogram done
clear
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question_answer14)
If the developing microspore mother cells draw nourishment by contacting the tapetal cells, the type of tapetum is called
A)
Plasmodial tapetum done
clear
B)
Secretory tapetum done
clear
C)
Amoeboid tapetum done
clear
D)
Endothelium done
clear
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question_answer15)
The function of endothecium is
A)
Nutritional done
clear
B)
Mechanical support done
clear
C)
Dehiscence done
clear
D)
Protection done
clear
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question_answer16)
One pollen mother cell may produce four germinating pollen grains, each with two male nuclei and one tube nucleus. How many meiotic divisions are necessary to bring this about
A)
Two done
clear
B)
One done
clear
C)
Three done
clear
D)
Four done
clear
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question_answer17)
The germpores on the pollen grains are found on the
A)
Exine only done
clear
B)
Intine only done
clear
C)
Both exine and intine done
clear
D)
Vegetative cell done
clear
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question_answer18)
How many microspore mother cells will give rise to 256 microspores after reduction division
A)
512 done
clear
B)
128 done
clear
C)
64 done
clear
D)
96 done
clear
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question_answer19)
The type of fossil pollen grains present in the area may be helpful in the exploration of
A)
Coal done
clear
B)
Petroleum done
clear
C)
Fossil pteriodophytes done
clear
D)
All the above done
clear
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question_answer20)
The pollen grain is [NCERT 1974, 75, 76; CPMT 1978, 84; CBSE PMT 1993; RPMT 2002]
A)
An immature male gametophyte done
clear
B)
A mature male gametophyte done
clear
C)
Partially developed male gametophyte done
clear
D)
Last stage of male gametophyte done
clear
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question_answer21)
How many meiotic divisions are necessary to produce 100 pollen grains [CPMT 1976; BHU 1991; Bihar 1992; AIIMS 1993; RPMT 1995; CBSE PMT 1995; AFMC 1999]
A)
100 done
clear
B)
25 done
clear
C)
50 done
clear
D)
20 done
clear
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question_answer22)
Which part of the reproductive structure produces both enzymes and hormones [AIIMS 1981, 93]
A)
Archegonium done
clear
B)
Middle layer done
clear
C)
Tapetum done
clear
D)
Endothecium done
clear
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question_answer23)
In a flowering plant the largest number of haploid cells occur in [CPMT 1982]
A)
Ovule done
clear
B)
Microsporangia done
clear
C)
Root tip done
clear
D)
Cambium done
clear
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question_answer24)
The tapetal nuclei in anthers of many angiosperm flowers are [CPMT 1985]
A)
Mostly aneuploid done
clear
B)
Mostly polyploid done
clear
C)
Mostly haploid done
clear
D)
Not having complete haploid genome done
clear
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question_answer25)
Occurrence of more than four spores from a spore mother cell is called [CPMT 1986]
A)
Polyspermy done
clear
B)
Polyspory done
clear
C)
Polyembryony done
clear
D)
Polysiphony done
clear
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question_answer26)
The function of innermost layer of pollen sac, tapetum is [MP PMT 1986; MHCET 2000, 02; BHU 2001; RPMT 2002; MP PMT 2005]
A)
Dehiscence done
clear
B)
Mechanical done
clear
C)
Protective done
clear
D)
Nutritive done
clear
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question_answer27)
Endothecium and tapetum in anther are derived from [AMU 1987]
A)
Primary sporogenous layer done
clear
B)
Primary parietal layer done
clear
C)
Both a and b done
clear
D)
None of the above done
clear
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question_answer28)
In a pollen grain, larger nucleus is [AFMC 1987]
A)
Generative nucleus done
clear
B)
Tube nucleus done
clear
C)
Vegetative nucleus done
clear
D)
None of these done
clear
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question_answer29)
Development and formation of pollen grains in anther of the stamen is known as [CPMT 1987]
A)
Pollination done
clear
B)
Fertilization done
clear
C)
Microsporogenesis done
clear
D)
Megasporogenesis done
clear
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question_answer30)
Which of the following is correct statement [CBSE PMT 1989]
A)
Gametes are diploid done
clear
B)
Spores are invariably haploid done
clear
C)
Spores and gametes are invariably haploid done
clear
D)
Gametes are invariably haploid done
clear
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question_answer31)
In another culture, the androgenic haploid plants are obtained from [CBSE PMT 1990]
A)
Young pollen grain done
clear
B)
Connective tissue done
clear
C)
Anther tapetum done
clear
D)
Anther wall done
clear
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question_answer32)
In monocots, male gametophyte is [CBSE PMT 1990]
A)
Microspore done
clear
B)
Megaspore done
clear
C)
Tetrad done
clear
D)
Nucellus done
clear
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question_answer33)
The odd one is [CBSE PMT 1991]
A)
Micropyle done
clear
B)
Embryo sac done
clear
C)
Nucellus done
clear
D)
Pollen grain done
clear
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question_answer34)
In plants meiosis occurs in [BHU 1991]
A)
Anther done
clear
B)
Root tip done
clear
C)
Cambium done
clear
D)
Pollen grain done
clear
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question_answer35)
Microsporogenesis is a synonym for [AMU 1991]
A)
Spermatogenesis done
clear
B)
Development of pollen done
clear
C)
Development of male gametophyte done
clear
D)
Development of female gametophyte done
clear
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question_answer36)
In another culture, some diploid plants were reported with haploids. They have evolved from [BHU 1992]
A)
Prothallial cell of pollen grain done
clear
B)
Generative cell of pollen grain done
clear
C)
Cell of anther wall done
clear
D)
Exine of pollen grain done
clear
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question_answer37)
The anther wall consists of four wall layers where [CBSE PMT 1993; BVP 2003]
A)
Endothecium lies inner to middle layers done
clear
B)
Tapetum lies just inner to endothecium done
clear
C)
Tapetum lies next to epidermis done
clear
D)
Middle layers lie between endothecium and tapetum done
clear
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question_answer38)
A typical anther wall has [MP PMT 1993]
A)
Ekothecium and endothecium done
clear
B)
Endothecium and tapetum done
clear
C)
Exothecium, endothecium and tapetum done
clear
D)
Exothecium and tapetum done
clear
View Solution play_arrow
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question_answer39)
In flowering plants, a mature 'male gametophyte' is derived from a 'pollen mother cell' by [BHU 1994]
A)
Three mitotic divisions done
clear
B)
One meiotic and two mitotic divisions done
clear
C)
Two meiotic divisions done
clear
D)
A single meiotic division done
clear
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question_answer40)
Palynology deals with the study of [CPMT 1995]
A)
Pollen grains done
clear
B)
Chromosomes done
clear
C)
DNA done
clear
D)
Genes done
clear
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question_answer41)
Mature male gametophyte is made up of [RPMT 1995]
A)
One cell done
clear
B)
Two cells done
clear
C)
Three cells done
clear
D)
Four cells done
clear
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question_answer42)
Ubisch bodies found in tapetal cell help in formation of [BHU 1995]
A)
Pollen kit and pollinia done
clear
B)
Exine done
clear
C)
Sporopollenin done
clear
D)
Intine and pollen kit done
clear
View Solution play_arrow
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question_answer43)
Germpore is the region where the exine is [MP PMT 1995]
A)
Thick done
clear
B)
Uniform done
clear
C)
Thick and uniform done
clear
D)
Absent done
clear
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question_answer44)
How many pollen grains are formed from 10 microspore mother cells by meiosis [CBSE PMT 1996]
A)
80 done
clear
B)
40 done
clear
C)
20 done
clear
D)
10 done
clear
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question_answer45)
In an young anther the four rows of cells which later produce pollen are called [MP PMT 1999]
A)
Antheridium done
clear
B)
Archesporium done
clear
C)
Tapetum done
clear
D)
Zoosporangium done
clear
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question_answer46)
If a sporangium is derived from a single cell, it is called [BHU 2000]
A)
Leptosporangiate done
clear
B)
Eusporangiate done
clear
C)
Heterosporangiate done
clear
D)
Homosporangiate done
clear
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question_answer47)
Tapetum is a part of [MP PMT 2000]
A)
Male gametophyte done
clear
B)
Female gametophyte done
clear
C)
Ovary wall done
clear
D)
Anther wall done
clear
View Solution play_arrow
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question_answer48)
Haploids can be obtained form [MHCET 2000]
A)
A pollen grains done
clear
B)
Root apex done
clear
C)
Shoot apex done
clear
D)
Embryo done
clear
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question_answer49)
Pollinia is found in which of the following plant family [AIIMS 2001]
A)
Asteraceae done
clear
B)
Myrtaceae done
clear
C)
Malvaceae done
clear
D)
Asclepiadaceae done
clear
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question_answer50)
In angiosperm, all 4 microspores of tetrad are covered by a layer which is formed by [CBSE PMT 2002]
A)
Callose done
clear
B)
Cellulose done
clear
C)
Sporopollenin done
clear
D)
Pectocellulose done
clear
View Solution play_arrow
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question_answer51)
Meiosis can be observed in [BVP 2003]
A)
Spore mother cells done
clear
B)
Microspores done
clear
C)
Megaspores done
clear
D)
Tapetal cells done
clear
View Solution play_arrow
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question_answer52)
Exine of pollen grains is composed of [MHCET 2003; AIIMS 2003; MP PMT 2005]
A)
Pectocellulose done
clear
B)
Lignocellulose done
clear
C)
Sporopollenine done
clear
D)
Pollen kit done
clear
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question_answer53)
Rarely among angiosperms the pollen grains influenced the endosperm. This is called as [CPMT 2004]
A)
Metaxenia done
clear
B)
Nemec phenomenon done
clear
C)
Xenia done
clear
D)
Mesogamy done
clear
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question_answer54)
Ubisch bodies are present in [BHU 2005]
A)
Pollen tube done
clear
B)
Pollen grain done
clear
C)
Microspore done
clear
D)
Tapetum done
clear
View Solution play_arrow
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question_answer55)
Pollen grain are formed in [Haryana PMT 2005]
A)
Another done
clear
B)
Stigma done
clear
C)
Filament done
clear
D)
Pollen sac done
clear
View Solution play_arrow