Morphology of Flowering Plants Test - 4

In grass and banyan tree, the roots arise from parts of the plant other than the radicle. These type of roots are called adventitious roots.

The function of a root cap is to protect the tender apex of the root as it makes its way through the soil.

In tuberous roots, roots are swollen without any definite shape. Example: Sweet potato.
In fasciculated roots, several tubercular roots occur in a cluster at the base of the stem. Example: Dahlia.
In nodulose roots, the slender roots become suddenly swollen near the apex. Example: Mango.

Annulated Roots are these thickened roots that possess a series of ring-like outgrowths or swellings, e.g., Cephaelis or Psychotria.

Turnip lives for two years and produces flowers and seeds in the second year after which it dies. These plants are called biennials.

This is the correct option as this is not a characteristic feature of a rhizome. A tubers bearing branches come from the lowest axils of the aerial stem. These branches are weakly geotropic. When formed above ground, they bury themselves and swell at their apices to form the massive tubers.

In Allium and tulip, the outer leaves are large and completely ensheath the inner portion of the bulb.

In Colocasia, a weak, slender, lateral branch arises from the base of the shoot buried in the soil, grows horizontally outwards and adventitious roots are given out where it touches the ground

This is the correct option as this statement is false about a corm. It is a stout, solid, fleshy underground stem that grows vertically.