Question

In the family Liliaceae, the leaves are stipulate and reticulate in
A. Lilium
B. Allium
C. Smilax
D. Ruscus

Answer 1

Hint: Liliaceae is an economically important plant family. It consists of flowering plants. They are herbaceous and perennial. And are monocotyledonous.

Complete answer: In the family Liliaceae, the plants are exstipulate, since they possess negligent stipules, or in some cases the stipules must be absent. And also consists of parallel venation and not reticulate or network like venation. In plants such as Smilax, the leaves are stipulated, as they possess reduced leaf-like structures known as stipule beneath the petiole. The venation is also reticulated on the leaves forming a network-like structure.
Considering the other given options:
Lilium species are also known as true lilies, these plants exstipulate as well as possess parallel venation on their leaves.
-Allium is commonly known as onion. These plants possess leaves that are exstipulate and have parallel venation.
-Ruscus is a genus belonging to the family Liliaceae and includes six species of flowering plants. All the species included in it are exstipulate as well as consist of parallel venation.
Therefore by considering the other given options, the most appropriate one is C. That is, in the family Liliaceae, the leaves are stipulate as well as reticulate in Smilax.

Note: The stipules are most commonly present in dicot plants. Very few monocot plants possess stipules. There are different types of stipules which can be classified according to their duration, position, shape, size as well as purpose.