Sexual reproduction in flowering plants

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

Which one of the following statements is correct?

• After fertilisation, the ovule forms a seed.

• The embryo of a seed consists of the testa and radicle.

• The radicle of the seed grows upwards.

• The plumule forms the future root of the plant.

Asexual reproduction involves

• two gametes

• fertilisation

• a single sex cell

• a single parent plant

Scutellum is

• Grass embryo

• Grass seed

• Grass fruit

• Grass cotyledon

Dioecy states

• Uniseuality of flwer

• Bisexuality of flower

• Bisexuality of plant

• Unisexuality of a plant

Autogamy can occur in a chasmogamouus 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