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Sexual Reproduction in Flowering Plants
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Embryo sac is monosporic when it develops from
The megaspore mother cell where meiosis has occurred but cytokinesis does not take place
Two functional megaspores
One of the four megaspores of a megaspore mother cell
Three megaspores of a megaspore tetrad
Formation of embryo from vegetative cells derived from zygote is called
Adventive polyembryony
Diploid polyembryony
Apospory
Apomixis
The ovule of an angiosperm is technically equivalent to :
Megasporangium
Megasporophyll
Megaspore
Megaspore mother cell
Double fertilization results in formation of
Endosperm
Megaspore
Seed
Fruit
Cleistogamous flower is found in
Viola
Tobacco
Mirabilis
None of the above
The point of attachment of funicle with body of ovule is
Chalaza
Micropyle
Hilum
Nucellus
Xenia and metaxenia are related to
Only endosperm
Pollen and endosperm
Pollen culture
Xylem and phloem
Moth pollinated flowers have
Inconspicuous petals with abundant pollen
Conspicuous coloured petals
Coloured petals and nectaries
White scented petals and nectaries
Pollination by ants is
Myrmecophily
entomophily
ornithophily
Malacophily
Assertion: Megaspore mother cell undergoes meiosis to produce four megaspores
Reason: Megaspore mother cells and megaspores both are haploid
Assertion is true but, Reason is false
The Assertion and Reason are true but Reason is not correct explanation of Assertion
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Assertion is false but, Reason is true
A mature male gametophyte is formed from pollen mother cell by
One meiotic division
Three meiotic divisions
One meiotic and two mitotic divisions
Two meiotic divisions
Ovule is .... .. {MHTCET 2010]
Megasporangium
Megasporophyll
Rolled megasporophyll
Integumented megasporangium
Proximal end of the filament of stamen is attached to the
Connective
Anther
Placenta
Thalamus or petal
Which pair has haploid nature
Nucellus and antipodal cells
Egg cell and antipodal cells
Egg nucleus and secondary nucleus
Megaspore mother cell and antipodal cells
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Water
Bat
bee
Wind
Match and find the correct combination
a) Pollen grains
d) Microsporangia
b) Pollen sacs
e) Microspores
c) Stamens
f) Microsporophylls
a - d, b - f, c - e
a - f, b - d, c - d
a - d, b - e, c - f
a - e, b - d, c - f
In chiropterophily, pollination is performed by
Bats
Insects
Birds
squirrels
A number of fruitlets (seeds) of Strawberry are removed randomly during development of fruit
Normal fruit with fewer seeds is formed
Distorted fruit with under-developed portions is formed
A seedless fruit is formed
Fruit stops development
The tenuinucellate ovule has
Large amount of nucellus
Small amount of nucellus
Chalazal nucellus
Micropylar nucellus
Which of the following statements about sporopollenin is wrong
Sporopollenin occurs in the area of germ pores only
Sporopollenin can withstand high temperature and strong acids
Sporopollenin is not degraded by any known enzyme
Exine is formed of sporopollenin
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Sexual Reproduction in Flowering Plants