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NEET Biology MCQ
Sexual Reproduction In Flowering Plants Mcq
Quiz 3
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Q.1
Type of pollination in which genetically different pollen grains are brought over stigma is ... .... [ AMU 2012]
0%
a) Geitonogamy
0%
b) Chasmogamy
0%
c) Xenogamy
0%
d) Cleistogamy
Explanation
Answer : (c)
Q.2
Number of chromosomes in an angiospermic plant isNumber of chromosomes in synergid cells will be ... .... [ MPPMT 2007 ]
0%
a) 28
0%
b) 21
0%
c) 14
0%
d) 7
Explanation
Answer : (d)
Q.3
Study of pollen grains is ... .. [ BHU 1995 ]
0%
a) Palynology
0%
b) Palaeontology
0%
c) Palaeobotany
0%
d) None of the above
Explanation
Answer : (a)
Q.4
Pollination by ants is ... ... [ AIIMS 1999 ]
0%
a) Malacophily
0%
b) Myrmecophily
0%
c) Entomophily
0%
d) Ornithophily
Explanation
Answer : (b)
Q.5
Female gametophyte of angiosperms is represented by ,,, ,,, [ CBSE 1990 ]
0%
a) Ovule
0%
b) Megaspore mother cell
0%
c) Embryo sac
0%
d) Nucellus
Explanation
Answer : (c)
Q.6
The process of transfer of pollen grains from anther to stigmatic surface of flower with the help of water is ... ... [ JKCMEE 2005 ]
0%
a) Anemophily
0%
b) Hydrophily
0%
c) Zoophily
0%
d) Ornithophily
Explanation
Answer : (b)
Q.7
A diploid egg, formed in embryo sac developed directly from nucellus, parthenogenetically grows into embryo. The apomixis is ... ... [ CET Chd. 1997 ]
0%
a) Vegetative apomixis
0%
b) Adventitious apomixis
0%
c) Diplospory
0%
d) Apospory
Explanation
Apomixis (asexual seed formation) is a reproductive mechanism that bypasses the sexual process and allows a plant to clone itself through seed. In diplospory, the embryo sacs develop directly from the unreduced megaspore mother cell. In apospory, a different cell in the nucellus gives rise to an embryo sac. In both cases, the diploid egg cell develops into an embryo without being fertilized, a process termed parthenogenesis Answer : (d)
Q.8
Thread-like pollen without exine are found in ... ... [ DPMT 2011]
0%
a) Hydrophily
0%
b) Entomophily
0%
c) Anemophily
0%
d) Chiropterophily
Explanation
Answer : (a)
Q.9
A unique phenomenon observed in the embryo sac of angiosperms is ... .. [ JIPMER
0%
a) Fusion of gametes
0%
b) Double fusion
0%
c) Triple fusion
0%
d) Triple fusion and double fertilization
Explanation
Answer : (d)
Q.10
Double fertilization and triple fusion were discovered by .. ... [ BHU 1999 ]
0%
a) Hofmeister
0%
b) Nawaschin and Guignard
0%
c) Leeuwenhoek
0%
d) Strasburger
Explanation
Answer : (b)
Q.11
Match the columns and choose the correct combination
I
II
1) Funicle
a) Small opening of ovule
2) Integuments
b) Stalk of ovule
3) Chalaza
c) Protective envelopes of ovule
4) Hilum
d) Junction part of ovule and stalk
5) Micropyle
e) Basal part of ovule
0%
a) 1 - b, 2 - c, 3 - e, 4 - d, 5 - a
0%
b) 1 - a, 2 - c, 3 - b, 4 - d, 5 - e
0%
c) 1 - b, 2 - c, 3 - a, 4 - d, 5 - e
0%
d) 1 - b, 2 - d, 3 - e, 4 - a, 5 - c
Explanation
Answer : (a)
Q.12
Match the columns and select the correct combination
a) Ovule
1) Endosperm
b) Funiculus
2) Aril
c) Nucellus
3) Seed
d) Polar nuclei
4) Perisperm
0%
a) a - 3, b - 2, c - 1, d - 4
0%
b) a - 3, b - 2, c - 4, d - 1
0%
c) a - 1, b - 2, c - 3, d - 4
0%
d) a - 2, b - 3, c - 1, d - 4
Explanation
Answer : (b)
Q.13
Perisperm is ... .. [ DPMT 1996 ]
0%
a) outer part of embryo sac
0%
b) degenerate synergid
0%
c) degenerate secondary nucleus
0%
d) remains of nucellus
Explanation
Answer : (d)
Q.14
Anemophily occurs is ... ... [ EAMCET 1999 ]
0%
a) grasses
0%
b) legume
0%
c) Euphorbia
0%
d) Annona
Explanation
Answer : (a)
Q.15
Pollination is ... ... [ AFMC 1994 ]
0%
a) Transfer of pollen from anther to stigma
0%
b) Shedding of pollen grains from anthers
0%
c) Dispersal of pollen
0%
d) Fertilization of plants
Explanation
Answer : (a)
Q.16
Radicle and of embryo is towards ... ... [ Wardha 2003 ]
0%
a) Hilum
0%
b) Chalaza
0%
c) Funicle
0%
d) Micropyle
Explanation
Answer : (d)
Q.17
Cleistogamy is effective in ... ... [ DPMT 1997]
0%
a) Oryza sativa
0%
b) Brassica campestris
0%
c) Allium cepa
0%
d) Pisum sativum
Explanation
Answer : (a)
Q.18
A typical dicotyledonous embryo consists of .. .. [ CET Chd. 2010 ]
0%
a) Radicle only
0%
b) Radicle, embryonal axis and cotyledons
0%
c) Cotyledons only
0%
d) Embryo axis only
Explanation
Answer : (b)
Q.19
Zygote of Capsella bursa - pastoris undergoes ... ... [ RPMT 1998 ]
0%
a) Longitudinal division
0%
b) Equal transverse division
0%
c) Unequal transverse division
0%
d) Oblique division
Explanation
Answer : (c)
Q.20
Milky water of green Coconut is ... .. [ JIPMER 200 ]
0%
a) Liquid chalaza
0%
b) Liquid nucellus
0%
c) Liquid endosperm
0%
d) Liquid female gametophyte
Explanation
Answer : (c)
Q.21
Which one is wrong ... ... [ CBSE 2012]
0%
a) Vegetative cell is larger than generative cell
0%
b) Intine is made of cellulose and pectin
0%
c) Pollen grains of some plants remain viable for months
0%
d) Double fertilization is absent where pollen is shed in 2-celled stage
Explanation
Answer : (d)
Q.22
Fusion of male gamete with egg in embryo sac is ... ... [ HPPMT 2007 ]
0%
a) Autogamy
0%
b) Syngamy
0%
c) Double fertilisation
0%
d) Triple fusion
Explanation
Answer : (b)
Q.23
Process of fusion between male and egg nuclei is ... ... [ MPPMT 1995 ]
0%
a) Syngamy
0%
b) Double fertilization
0%
c) Conjugation
0%
d) Triple fusion
Explanation
Answer : (a)
Q.24
ion 65 Why do seeds need water to germinate?
0%
a) Following hydration, enzymes break down stored food and make it available for the embryo
0%
b) Water provides energy
0%
c) Water activates the chlorophyll molecules so that photosynthesis can begin
0%
d) Water dissolves the minerals in the soil so that they become available to the seed
Explanation
Water: (i) hydrates enzymes in the seed, activating them. As a result the seed begins to release energy from its food store for growth. (ii) It causes pressure to build in the embryo’s cells, causing them to enlarge. This often results in the seed coat breaking open. Answer:(a)
Q.25
There are 10 flowers in plant of Crotalaria. In each microsporangium there are 30 microspore mother cells. How many pollen grains are formed from that plant.
0%
a) 4000
0%
b) 10,000
0%
c) 24,000
0%
d) 48,0000
Explanation
every flower of crotolaria would have 10 stamens, 10 stamens would have 10 anthers, 10 anthers would have 40 microsporangia, each microsporangia has 30 microspore mother cells so, 40 microsporangia would have 1200 microspore mother cells. Each microspore would produce 4 pollen grains, taking the number of pollen grains produced by a flower to 1200 X 4 = 4800. Since there are 10 flowers the answer would be 4800 X 10 = 48000 pollen grains. Answer : (d)
Q.26
Meiosis is best observed in dividing ... ... [ AIIMS 1992 ]
0%
a) Cells of apical meristem
0%
b) Cells of lateral meristem
0%
c) Microspores and anther wall
0%
d) Microsporocytes
Explanation
Answer : (d)
Q.27
evelopment of seedless fruit in an unfertilized flower is called ... .. [ JKCMEE 2005 ]
0%
a) Parthenocarpy
0%
b) Sporophytic budding
0%
c) Polyembryony
0%
d) Micropropagation
Explanation
Answer : (a)
Q.28
Pollination by snails and slugs is ... ... [ AIIMS 1998]
0%
a) Ornithophily
0%
b) Chiropterophily
0%
c) Entomophily
0%
d) Malacophily
Explanation
Answer : (d)
Q.29
Cleistogamy does not require anthesis because ... ... [ AIIMS 2011 ]
0%
a) No pollination agent is required
0%
b) it assures heterozygosity
0%
c) It allows xenogamy
0%
d) It favours insect pollination
Explanation
Answer : (a)
Q.30
Tapetum occurs in ... .. [ BHU 2007 ]
0%
a) Anther wall
0%
b) Ovary wall
0%
c) Male gametophyte
0%
d) Female gametophyte
Explanation
Answer : (a)
Q.31
famous embryologist of India who also advanced the science of morphology and tissue culture in India is .. ... [ JIPMER 2000 ]
0%
a) P. Maheshwari
0%
b) T.S. Sadasivan
0%
c) Swaminathan
0%
d) Ramdas
Explanation
Answer : (a)
Q.32
Match the columns and choose the correct combination
I
II
a) Cleistogamy
m) Insect pollination
b) Geitonogamy
n) Bud pollination
c) Entomophily
o) Pollination between flowers of the same plant
d) Xenogamy
p) Wind pollination
- -
q) Cross pollination
0%
a) a - m, b - q, c - n, d - o
0%
b) a - n, b - o, c - m, d - q
0%
c) a - q, b - p, c - o, d - n
0%
d) a - o, b - m, c - q, d - n
Explanation
Answer : (b)
Q.33
Arrangement of nuclei in normal dicot embryo sac is ... ... [ CBSE 2006 ]
0%
a) 3 + 3 + 2
0%
b) 2 + 4 + 2
0%
c) 3 + 2 +3
0%
d) 2 + 3 + 3
Explanation
Answer : (c)
Q.34
At the time of anther dehiscence ...
0%
a) Middle layers develop fibrous thickenings
0%
b) Epidermis degenerates
0%
c) Endothecium develops fibrous thickenings
0%
d) Endothecium degenerates
Explanation
Answer : (c)
Q.35
Multinucleate condition is present in .. ... [ Har PMT 2000 ]
0%
a) Quiescent centre
0%
b) Maize
0%
c) Meristematic tissue
0%
d) Liquid endosperm of Coconut
Explanation
Answer : (d)
Q.36
Synergids are ... ... [ AMU 2010 ]
0%
a) Hexaploid
0%
b) Haploid
0%
c) Diploid
0%
d) Triploid
Explanation
Answer : (b)
Q.37
Endosperm of flowering plants develops from ... ... [ kerala 2002 ]
0%
a) Haploid nucleus
0%
b) Diploid nucleus
0%
c) Triploid nucleus
0%
d) Polyploid nucleus
Explanation
Answer : (c)
Q.38
Chief pollinators of agricultural crops are ... ... [ CBSE 1994 ]
0%
a) Butterflies
0%
b) Bees
0%
c) Moths
0%
d) Beetles
Explanation
Answer : (b)
Q.39
Type of ovule present in Opuntia is ... .. [ CET Chd .2011 ]
0%
a) Amphitropous
0%
b) Campylotropous
0%
c) Circinotropous
0%
d) Orthotropous
Explanation
Answer : (c)
Q.40
Both autogamy and geitonogamy cannot occur in ... ... [ CBSE 2012 ]
0%
a) Papaya
0%
b) Cucumber
0%
c) Castor
0%
d) Maize
Explanation
Answer : (a)
Q.41
Chromosome number in flowering plant can be ... ... [ AFMC 1997 ]
0%
a) Haploid, diploid and polyploid
0%
b) Haploid and diploid
0%
c) Only diploid
0%
d) Only haploid
Explanation
Answer : (a)
Q.42
The ovary after fertilization is converted into .. ... [ JKCMEE 2008 ]
0%
a) Embryo
0%
b) Fruit
0%
c) Endosperm
0%
d) Seed
Explanation
Answer : (b)
Q.43
Pericarp of fruit develops from ... ... [ MPPMT 2003 ]
0%
a) Wall of ovary
0%
b) Nucellus
0%
c) Funicle
0%
d) Seed coat
Explanation
Answer : (a)
Q.44
Cells present in mature male gametophyte of angiosperms is ... ... [ RPMT 1995 ]
0%
a) One
0%
b) Two
0%
c) Three
0%
d) Four
Explanation
Answer : (c)
Q.45
Heaping of earth around base of stem in Potato is meant for ... .... [ AIIMS 1999 ]
0%
a) Preventing exposure of roots
0%
b) Providing extra support to delicate stem
0%
c) Inducing development of more auxiliary shoots
0%
d) Making more water available
Explanation
Answer : (c)
Q.46
Formation of gametophyte directly from sporophyte without meiosis is .. ... [ CPMT 1999 ]
0%
a) Apospory
0%
b) Apogamy
0%
c) Parthenogenesis
0%
d) Amphimixis
Explanation
Answer : (a)
Q.47
Wind pollinated flowers are ... ... [ manipal 2003 ]
0%
a) Small, scented and colourless
0%
b) Small, nonscented and colourless
0%
c) Big, scented and coloured
0%
d) Big, nonscented and colourless
Explanation
Answer : (b)
Q.48
Development of female gametophyte directly from megaspore mother cell without meiosis is called .. .... [ CPMT 1995 ]
0%
a) Apogamy
0%
b) Apospory
0%
c) Syngamy
0%
d) Parthenospore
Explanation
Answer : (b)
Q.49
Pollen grains have spiny exine to aid in ... ... [ MHTCET 2009]
0%
a) Entomophily
0%
b) Anemophily
0%
c) Ornithophily
0%
d) Chiropterophily
Explanation
Answer : (a)
Q.50
Nawaschin (1898) discovered double fertilization in ... ... [ MPPMT 1997]
0%
a) Lilium and Fritillaria
0%
b) Brassica and Iberis
0%
c) Papaya and Pea
0%
d) Mango and Sugarcane
Explanation
Answer : (a)
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