When the filament runs along the back of anther, it is called
Adnate
Versatile
Longitudinal
Syngenecious
The largest ovule is present in
Cycas
Pinus
Wolffia
Rafflesia
To get haploid callus, we should culture
Stigma
Embryo
Leaf tissue
Pollen grain
The pollen tube usually enters the embryo sac
Through one of the synergids
By directly penetrating the egg
By knocking off the antipodal cells
Between one synergid and central cell
Ovary is called inferior in
Epigynous condition
Hypogynous condition
Perigynous condition
Mesogynous condition
What is meant by double fertilization ?
Formation of two zygotes
Fusion between egg and male gamete
Fusion between secondary nucleus and male gamete
Both '2' and '3'
In cross self fertilized plants, the flowers are first emasculated. Which organ of the plant is removed in this process?
Ovary
Ovules
Stigmas
Stamens or anthers
Pollen grains are able to withstand extremes of temperature and dessication, because their exine is composed of
Cutin
Suberin
Callose
Sporopollenin
Which of the following belongs to phanerogams ?
Thallophyta
Bryophyta
Pteridophyta
Angiosperm
The emasculation of flower buds is achieved by the removal of
Sepals
Anthers
Corolla
