Question

Anthers dehisce longitudinally towards the side of carpels. The condition is
A. Introrse
B. Extrorse
C. Innate
D. Centripetal

Answer 1

Hint:- The reproductive organ of the flower which functions as the pollen producer is known as the stamen. Stamen is composed of two parts. These parts are another and the filament. The anther is the bag-like structure which encloses the pollen. Filament possesses the stalk-like structure which remains attached to the anther.

Complete step-by-step solution:- Dehiscence is the process that involves the splitting of mature anthers, fruits, and sporangia to release pollen, seeds spore respectively is known as dehiscence. The structure which involves the dehiscence process is called dehiscent.
The process of dehiscence of another involves five stages. These are
Epidermis and endothecium cells expand that result in the thickening of the interior U shaped wall.
Septum opens due to enzyme reaction between the two locules.
Then tapetum is ruptured.
Rupture of tapetum leads to exposing the stomium by the epidermis and endothecium. Epidermis and endothecium use centripetal force to open the stomium.
Then the locule bends outward direction the centrifugal force, produced by the epidermis and endothecium.
Dehiscence of anther depends on various factors like light, morphological structure of anther, etc.
When the anther remains to the flower center, dehisce occurs longitudinally. This is known as Introrse. When another is found in the outward direction from the flower center it involves the dehisce called extrorse.

Correct Answer: Option A. Introrse.

Note:- Some plants undergo another process of dehiscence, they release their content like seeds by predation or decaying of mature fruits or another. This type of dehiscence does not involve the opening via operculum. It is called indehiscent. The indehiscent structure is found in many species like Griasneuberthii.