CBSE
Tetradynamous stamens are found in :
Chrysanthemum
Zinnia
Poppy
Brassica
The formation of embryo without fusion of gametes is termed as :
apospory
isogamy
apogamy
syngamy
Diadelphous stamens are the characteristic features of :
Ranunculaceae
Fabaceae
Poaceae
Malvaceae
Anthesis means
growth of pollen tube inside the carpel
dehiscence of anthers
opening of floral bud
emergence of anthers
Seed which are able to withstand reduction in moisture and temperature are called
dormant seeds
recalcitrant seeds
orthodox seeds
non- viable seeds
Aleuron layer is found in :
embryo
nucellus
endosperm
endodermis
Outgrowth developing along with hilum of the seed is:
Plumule
Radicle
Strophiole
Perisperm
Phytochrome occurs in two forms. In which form it promotes the germination of seeds of some species ?
Pfr forms
Pr forms
Both forms
None of these
Pollination occuring from one flower to another of same plant is :
autogamy
allogamy
geitenogamy
none of these
Removal of top fertile soil by wind or water is :
Siltation
Soil erosion
Weathering of soil
Leaching