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
In callus culture, roots can be induced by the supply of
auxin
cytokinin
gibberelin
ethylene
A.
auxin
Callus is a irregular, unorganised and undifferentiated mass of actively dividing cells. It's differentiation is under the control of two hormones: auxin and cytokinin.
Development of | Condition |
Root | |
Shoot | |
Both root and shoot |
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