Study the following statements and select the option with correct statements.
I and II
I and III
II and III
I, II and III
B.
I and III
Most of the leaves have a swollen leaf base known as pulvinus. Its attachment to the stem is not strong. In guava opposite phyllotaxy is found. In this case, all the pairs of leaves of branch arise in the same plane so that two vertical rows are formed.
In Australian Acacia, petiole gets modified into leaf-like structure and synthesise food. In Eichhornia, petiole becomes spongy and helps in floating.
The material, which arrests cell division, is obtained from
Crocus
Colchicum
Dalbergis
Chysanthomum
Three floral diagrams are given here. Their respective families are assigned in the answer key. Find out the families to which these diagrams belong to
A-Liliaceae, B-Asteraceae, C-Solanaceae
A-Asteraceae, B-Solanaceae, C-BRassicaceae
A-Asteraceae, B-Solanaceae, C-Asteraceae
A-Poaceae, B-Solanaceae, C-Asteraceae
A fern prothallus is bisexual. If fertilisation takes place between their gametes than it is known as
cross- fertilisation
self- fertilisation
isogamous
viviparous