Mcqs
bold options are correct
bold options are correct
Life Cycle of Angiosperms
Ø The angiosperm plant is
(a)Sporophyte
(2n) (b) Sporophyte (n) (c) Gametophyte (d)
None of these
Ø The reproductive structures in
angiosperms are
(a)Leaf (b) Carpels (c) Flower (d)
Stamens
Ø The highly modified reproductive leaves are
(a)Stamens and carpels (b)
Microsporophylls and megasporophylls (c)
Both a &b
(d)Sepals and petals
Ø Each microsporophyll consist of
(a) 3 parts (b) 2 parts (c)1
part (d)None of these
Ø Each anther lobe contains
(a) 8 microsporangia (b) 10 microsporangia (c)2 microsporangia (d)4 microsporangia
Ø The inner most layer of sporangium
wall is nutritive in nature and called as
(a)Endoderm (b)Mesoderm (c) Tapetum (d)Ectoderm
Ø The microspores germinate to produce
(a)Sporophyte (b) Gametophyte (c) Female
gametophyte
(d)Male gametophyte
Ø The outer layer of microspore is
thick,cuticularized and called as
(a)Exine (b)Intine (c) Tapetum (d)Ectoderm
Ø The inner layer of microspore is thin
and called as
(a)Ectoderm (b) Exin (c)Intine (d)Endoderm
Ø Each megasporophylls consist of
(a)2 parts (b)4 parts (c)3 parts (d)5 parts
Ø The stigma is the receptive disc and
receive
(a)Spores (b)Pollen
grains
(c)Seeds (d)none of these
Ø The ovary contains one or more
rounded or oval bodies the
(a)Ovules (b) Seeds (c)Spores (d)Egg
Ø The ovules are born on the ovary wall
upon a specialized tissue,the
(a)Placenta (b)Nucellus (c) Both a and b
(d)None of these
Ø Each ovule is attached to the
placenta through a short stalk,the
(a)Chalaza (b) Funicle (c)Filament (d)Stalk
Ø Nucellus represents mega
sporangium ,therefore the ovule is also
termed as
(a)Integumented mega sporangium (b) Microsporangium
(c)Mega spore (d) none of these
Ø A nucellus cell enlarges in size and
act as
(a)Microspore mother cell (b) Megaspore mother cell
(c)Microspore (d) Megaspore
Ø The gametophyte phase of
angiosperm is
(a)Diploid (b) Triploid (c) Haploid (d)
none
Ø The microspore is the first cell of
(a)Male gametophyte (b) Female
gametophyte (c)
Sporophyte
(d)None
Ø The intine grows out through germ
pore to form
(a)Germ tube
(b)Pollen tube (c)Pollen grain
(d)None
Ø The megaspore is the first cell of
the
(a) Male gametophyte (b)Sporophyte (c)female gametophyte
(d)Thallus
Ø The part of axis above the point of
attachment of cotyledon is
(a)Hypocotyle (b)
Epicotyle (c) Coleorrhiza
(d)Coleoptile
Ø The ripened ovary is called as
(a)Seed (b)
Fruit (c)
Stem (d) Leaf
Ø The female gametophyte is represented
by embryo sac which is
(a) 6 nucleate (b)7 nucleate (c) 8 nucleate (d)10 nucleate
Ø The fertilized egg secretes a thick
wall and is transformed in to
(a)Oosphere (b)
Oospore (c)
Zygote (d) None
Ø Plumule which develops in to
(a)Root (b)shoot (c)Apex (d) None
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