Solarisation is
formation of chlorophyll
destruction of chlorophyll
utilisation of sunlight
effects of solar light
A fern prothallus is bisexual. If fertilisation takes place between their gametes than it is known as
cross- fertilisation
self- fertilisation
isogamous
viviparous
Which of the following is not the feature of gymnosperms?
parallel venation
perennial plants
distinct branches (long and short branches)
xylem with vessels
Edible part in 'sorosis', a composite fruit, is
cotyledons
endosperm
perianth and peduncle
fleshy thalamus
Most primitive member, in which roots are not present, is
Psilotum
Rhynia
Lycopodium
Selaginella
B.
Rhynia
Psilophytes are the oldest of seedless vascular plants. They are characterised by the absence of roots and presence of rhizoids, eg, Rhynia- primitive member of Pteridophytes.
Lycopodium and Selaginella are developed pteridophytes in which plant body is differentiated into roots, stems and leaves.