Morphology of Flowering Plants Test - 5

Hibiscus and Ficus have their leaf blades situated on the petiole.

Datura flower is actinomorphic. It can be divided into two equal radial halves in any radial plane passing through the centre.

In Lathyrus aphaca, the whole leaf is converted into a single tendril while the two foliaceous stipules act like the leaves.

In spike inflorescence, the main axis remains elongated, the lower flowers are older but the flowers are sessile.

This is the correct option. The gynoecium of family Fabaceae is ovary superior, mono carpellary, unilocular with many ovules. The gynoecium of family Solanaceae is bicarpellary, syncarpous, ovary superior and bilocular. The gynoecium of family Lilaceae is tricarpellary, syncarpous, ovary superior and trilocular with many ovules.

In compound umbel, the peduncle is short and bears many branches which arise in an umbellate cluster. In compound corymb, the main axis branches in a corymbose manner and each branch bears flowers arranged in corymbs. In compound spadix, the main axis remains branched in a racemose manner and each branch bears sessile and unisexual flowers.

Cyanthium inflorescence is found in genus Euphorbia and genus Pedilanthus of family Euphorbiaceae

This is the correct option. Sepals are the first to form from the receptacle. They are usually green in colour and leaf-like in structure.

Legume type of simple dry fruit is monocarpellary, develops from a superior one-chambered ovary and dehisces by both the sutures

The fruits of Celosia liberate their seeds through transverse rupture.