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