The epidermis plays a protective role in anther development. The tapetum provides nutrients for microspore development and materials for pollen wall formation. The endothecium is responsible for anther dehiscence to disperse pollen when they are mature (van der Linde and Walbot, 2019).
Endothecium helps in dehiscence. Note: Endothecium is the layer that secretes materials that are essential for the proper maturation of the pollen grain.
Microsporangium is surrounded by four wall layers. The innermost layer is tapetum. Tapetum nourishes the developing pollens. The three outer walls provide protection and help in dehiscence of anther to release pollen grains.
Endothecium serves as a protective layer and aids in the dehiscence of another to allow the discharge of pollen from the plant.
Assertion: Endothecium layer of anther wall plays an important role in dehiscence of anther. Reason: The presence of fibrous bands and differential expansion of inner and outer tangential walls of endothecial cells cause dehiscence of anther.
The developing pollen grains are nourished by Tapetum. Alpha cellulose and fragments of lignin compose these thickenings. These thickenings become hygroscopic and thus aid in the dehiscence of anthers.
The epidermis is the outermost layer of the anther and has a protective function. The epidermis prevents water loss from the anther, together with the endothecium provides structural support to the anther and plays a role in the anther dehiscence (Goldberg et al. 1993).
So, the correct answer is 'Tapetum helps in the dehiscence of anther. '
Deep dehiscence of the underlying fascia is a surgical emergency and must be closed in the operating room, as this can lead to evisceration. If the wound shows signs of evisceration, the wound can be covered with a sterile saline dressing until the herniating organs can be reduced back into the abdomen.
Some methods to prevent surgical wound dehiscence include supporting the abdomen when coughing, sneezing, or moving around/sitting up in bed, avoiding strain or pressure to the wound area (heavy lifting, exercise, coughing, constipation/straining with bowel movements), and maintaining a good diet and good oral intake ...
The stomium is the region of the anther where dehiscence occurs.
Solution: The outer three wall layers (epidermis, endothecium and middle layer) perform the function of protection and help in dehiscence of anther to release the pollen.
The wall layers of a microsporangium from outermost to innermost are: epidermis, endothecium, middle layers and tapetum. The first three layers generally provide protection and help in dehiscence of anther. Tapetum performs nutritive function for pollen grains.
In partial dehiscence, only the superficial layers or part of the tissue layers reopen. In complete wound dehiscence, all layers of the wound thickness are separated, revealing the underlying tissue and organs, which may protrude out of the separated wound. This can be seen in some cases of abdominal wound dehiscence.
The splitting of the plant structures in order to release its contents is called dehiscence. It is most commonly seen in anther to release pollens. The point where the anther breaks is called the line of dehiscence.
Hyperbaric Oxygen Therapy can help reduce the potential complications of wound dehiscence. Hyperbaric wound care is a safe, natural, and efficient medical therapy for wounds that may need additional support to properly heal. It uses 100% oxygen to stimulate accelerated healing capabilities within the body.
If associated with superficial wound dehiscence, they can be treated by absorbent dressings such as alginate dressing. Fluid should be sent for culture and sensitivity, and antibiotics commenced empirically in the presence of systemic features of an infection, as mentioned previously.
Research has found that one of the most predictive risk factors for dehiscence is surgical site infection. Surgical incisions have a higher chance of opening if the wound becomes infected.
Dehiscence and evisceration can be a life threatening emergency; do not leave the client immediately call for help and, using a clean, sterile towel or sterile saline dampened dressing, cover the wound. Under no circumstance should reinserting the organs be attempted.
Even minor cases of wound dehiscence require immediate attention to prevent the wound from worsening. If left untreated, dehiscence can progress and lead to serious infection and life threatening complications. In some cases, complete wound dehiscence may result in evisceration.
Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers). They help deter excess water loss and invasion by insects and microorganisms.
* Epidermis- It is a single layer and outermost layer. The main function lies in the protection of pollen. * Endothecium- It is the layer that is present beneath the epidermis and it helps in thickening or provides thickening.
The epidermis is a protective outer covering of many plants and animals. It may be comprised of a single layer, as in plants, or of several layers of cells on top of the dermis, as in those of vertebrate animals.
The process of anther dehiscence
Anther dehiscence is a multistage process that involves localized cellular differentiation and degeneration, combined with changes in the structure and water status of the anther to facilitate complete anther opening and pollen release.