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WorksheetsRevision test of the chapter SEXUAL REPRODUCTION IN FLOWERIN
Total questions: 20
Worksheet time: 15mins
Autogamy can occur in a chasmogamous flower if
Pollen matures before maturity of ovule
Ovule mature before maturity of pollen
Both ovule and pollen matures simultaneously
Both anther and stigma are of equal length
During microsporogenesis meiosis occurs in
Endothecium
Microspore mother cell
Microspore tetrad
pollen grains
A particular species of a plant produces,light non sticky ,numerous pollen grains and long and feathery stigma. These modifications facilitates the pollination by
Insects
Water
Wind
Animals
In an embryo sac,the cells that degenerate after fertilization are
Synergies and primary endosperm cell
Synergids and antipodal cell
Antipodal cell and primary endosperm cell
Egg and antipodals
In a fertilized embryo sac ,haploid,diploid, triploid structures are
Synergid,zygote, PEN
Synergids, antipodal, polar nuclei
Antipodal, synergids, PEN
Synergids, polar nuclei, zygote
In the embryo of a typical dicot and a grass true homologous structures are
Coleorhiza, coleoptile
Coleoptile,scutellum
Cotyledon,scutellum
Hypocotyl,radicle
In a flower ,if megaspore mother cell forms megaspore ,without undergoing meiosis and if one megaspore develops into an embryo sac its nuclei would be
Haploid
Diploid
A few haploid ,a few diploid
With variable ploidy
The process of formation of seeds without fertilization in flowering plants is known as
budding
apomixis
sporulation
somatic hybridisation
Perisperm and endosperm differ in
Being a diploid tissue
Being a haploid tissue
Having no reserve food
Formation of perisperm by fusion of the secondary nucleus with many sperms
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Water
bee
wind
bat
The ovule of an angiosperm is technically equivalent to :
megaspore mother cell
megaspore
megasporangium
megasporophyll
Coconut water from a tender coconut is
Degenerated nucellus
Immature embryo
Free nuclear endosperm
Innermost layers of the seed coat
Filiform apparatus is characteristic feature of
Synergids
Generative cell
Nucellar embryo
Aleurone cell
A wind-pollinated flower will have
small petals, nectar and produce scent
small petals, large anthers and have a feathery stigma
large anthers, coloured petals and produce nectar
large petals, small anthers and produce scent
Asexual reproduction involves
two gametes
fertilisation
a single sex cell
a single parent plant
The embryo sac mother cell divides through meiosis to form (a)
One nucleus from each end of the embryo sac moves to the centre and are called (a)
Each pollen mother cell (2n) divides through meiosis to produce 4 haploid cells called (a)
The triploid nucleus also divides rapidly through mitosis to form the (a)
Pollen tube is formed from --------------------
(a)
