Question

Staminal tube is found in:
A. Nicotiana
B. Asparagus
C. Hibiscus
D. Pisum

Answer 1

Hint: The staminal tube is a floral tube produced by the fusing of androecial tissue, typically filaments. Each anther is carried aloft by a slender, pink filament; each filament is united to create a light, pink cylinder, known as a staminal column or stamen tube, in the male stamens of a flower. Anthers attached to the staminal tube usually produce yellow pollen grains.

Complete answer:
Option: A – Nicotiana does not show the presence of a staminal tube.
So, Option A is not correct.
Option: B – Asparagus also does not show the presence of a staminal tube.
So, Option B is not correct.
Option: C – Flowers of the plants of the Malvaceae family have the characteristic presence of a staminal tube. Hibiscus also belongs to the Malvaceae family. So, Hibiscus flowers contain staminal tube.
So, Option C is correct.
Option: D – Pisum flowers do not show the presence of a stamina tube.
So, Option D is also not correct.

Hence, Option C. Hibiscus is the correct answer

Additional information:
Plants of Malvaceae family blooms flowers which have a monodelphous and monothecous anthers where the filaments of all the stamens fuse to form staminal tube. Two, three or five pistils which are syncarpous are present in the flowers of the Malvaceae family. Furthermore, a multilobular ovary is seen in the flowers. Plants of the Malvaceae family contain all herbs, shrubs and trees.

Note:
Hibiscus belongs to the Malvaceae family of angiosperms and is a perennial plant, providing beautiful flowers. Large, showy trumpet-shaped blooms with five or more petals, ranging in colour from white to pink, red, blue, orange, peach yellow, or purple. The filaments of the Hibiscus flower's stamens combine to create a staminal tube, which covers the pistil.