Question

Epiphyllous stamens arise from
A. Petals
B. Perianth lobes
C. Sepals
D. Epicalyx

Answer 1

Hint: In this, the stamen gets bound to any part of the flower as a stamen adhesion of some other plant. This type of stamens is found in Asparagus.

Complete Answer:
- A stamen displays a stalk called the filament, long or short. With a terminal fertile section known as the anther, the filament ends. This involves microsporangia inside which microspores or grains of pollen are produced.
- The stamen filament is connected by means of a "connective" to the anther. Monothecous or dithecous can be the anther.
- There is only one sac in a monothecous anther. It is bilocular or bisporangiate, for example, Hibiscus. There are two sacs in the dithecous anther and it is tetralocular or tetrasporangiate in Datura.
- Adhesion can be of the following forms, depending on the floral organ involved in the union with stamens. Epiphyllous, Episepalous, Epipetalous, and Gynandrous are the form of stamen adhesion.

Now, let us find the solution from the options-
- Option A: Epiphyllous stamen does not arise from petals. The stamens that unit with petals is Epipetalous. Therefore, the option A is incorrect.
- Option B: Epiphyllous stamens arise from perianth lobes. Here, the stamen unites with perianth. Asparagus is an example of Epiphyllous stamens. Therefore, the option B is correct.
- Option C: Epiphyllous stamen does not arise from sepals. The stamens that unit with sepals is known as Episepalous stamen. Therefore, the option C is incorrect.
- Option D: Epiphyllous stamen does not arise from epicalyx. In this part of the flower no stamens adhesion takes place. Therefore, the option D is incorrect.

Thus, the correct answer is option (B) Perianth lobes.

Note: The floral organs like petals, sepals, or gynoecium can be united with stamens. Lily is also an example of Epiphyllous stamen, the examples of epipetalous stamen are brinjal, sunflower, and the example of Epipetalous is silver oak.