AIPMT-PRELIMS Botany Sexual Reproduction in Flowering Plants Class 12 Questions

Even in absence of pollinating agents seed-setting is assured in

The coconut water and the edible part of coconut are equivalent to

Nucellar polyembryony is reported in species of

Filiform apparatus is a characteristic feature of

Wind pollination is common in

In which one of the following pollination is autogamous?

Apomictic embryos in citrus arise from

Wind pollinated flowers are

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

An example of a seed with endosperm, perisperm, and caruncle is:

Unisexuality of flowers prevents:

Endosperm is consumed by developing embryo in the seed of:

In germinating seeds fatty acids are degraded exclusively in the:

In the prothallus of a vascular cryptogam, the antherozoids and eggs mature a different times. As a result

Flagellated male gametes are present in all the three of which one of the following sets?

Treatment of seed at low temperature under moist conditions to break its dormancy is called:

The arrangement of the nuclei in a normal embryo sac in the dicot plants is:

In a cereal grain the single cotyledon of embryo is represented by:

In which one pair both the plants can be vegetatively propagated by leaf pieces?

In a type of apomixis known as adventive embryony, embryos develop directly from the :

Through which cell of the embryo sac, does the pollen tube enter the embryo sac?

An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is :-

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is :-

In a flowering plant, archesporium gives rise to :-

The aleurone layer in maize grain is specially rich in :-

In Angiosperm all the four microspores of tetrad are covered by a layer which is formed by:

In grasses what happens in micro spore mother cell for the formation of mature pollen grains :-

Adventive embryony in citrus is due to :-

Eight nucleated embryo sac is a :

Endosperm is formed during the double fertilization by :