It is believed that ethylene is a multifunctional phytohormone that affects both the development process and the aging process in plants. Depending on its concentration, when it is applied, and the kind of plant it is applied to, it can either encourage or discourage the processes of growth and senescence.
Which plant hormone delays senescence and helps in cell division?
- A is the name of a plant hormone that aids with cell division and also delays senescence.
- Auxin B Gybberellin C Abscissic acid cytokinin D Cytokinin D Medium Solution opened in the app and verified by Toppr The correct answer is option C).
- Cytokinins are a type of plant hormone that may have a wide variety of impacts on the plants they are found in.
- It involves things like postponing senescence and active cell division, among other things.
What promotes plant senescence?
- Ethylene is another factor that might hasten the aging process in plants.
- This hormone is mostly found in the form of a gas, and as a consequence, it is utilized to coordinate the aging process amongst different groups of plants.
- The process of ripening fruit, which is a component of senescence, is a particularly advantageous application for ethylene.
- You may even observe it in action in the comfort of your own home’s kitchen.
What hormones are affected by senescence?
The level of this hormone significantly rises in leaves that are aging, or senescing. Additionally, it is the hormone that is most important in the process of reacting to infections. One of the primary hormones that is responsible for shutting down just the infected section of a plant is salicylic acid, which is released when a portion of the plant is contaminated.
What is the function of ethylene hormone in plants?
This hormone is mostly found in the form of a gas, and as a consequence, it is utilized to coordinate the aging process amongst different groups of plants. The process of ripening fruit, which is a component of senescence, is a particularly advantageous application for ethylene. You may even observe it in action in the comfort of your own home’s kitchen.
Which is anti senescence plant hormone?
Letham was the one who came up with the name cytokinin. The hormones known as cytokinins are responsible for the anti-aging benefits shown in certain plant tissues.
Which hormone prevents senescence name its different functions and uses?
Various Categories of Plant Hormones
| Hormone | Function |
|---|---|
| Gibberellins | Break the dormancy of seeds and buds; promote growth |
| Cytokinins | Promote cell division; prevent senescence |
| Abscisic Acid | Close the stomata; maintain dormancy |
| Auxins | Involved in tropisms and apical dominance |
What prevents senescence in plants?
Cytokinins play an important role in the upkeep of plant cells, and the expression of genes involved in cytokinin production at a late stage of development helps to avoid the aging of leaves.
Is senescence prevented by auxin?
Auxin is classified as a negative regulator because of its capacity to suppress the expression of genes that are related with senescence (Mueller-Roeber and Balazadeh, 2014).
Does cytokinin promote senescence?
Cytokinins have the ability to influence a variety of significant developmental processes, one of which is the last phase of leaf development known as senescence. This phase is connected with the breakdown of chlorophyll, the dissolution of photosynthetic machinery, and oxidative damage.
How do cytokinins prevent senescence?
The synthesis of cytokinin has been shown to slow down the aging process. However, particularly under conditions of low light, a buildup of sugars during senescence, which can be caused either by the breakdown of stored starch or by the preferential export of nitrogen from the leaf, might impede the impact of cytokinin.
How do you treat senescence in plants?
A dark treatment or removing the leaf from the plant are both viable options for intentionally inducing senescence in plants. The yellowing and degradation of proteins that result from these therapies are not always an accurate reflection of the normal process of senescence that occurs during development.
Which of the following plant hormones promotes cell division and prevents senescence?
The solution that you are looking for is cytokinin. Cytokinins are a group of plant growth agents that stimulate cell division and organ creation, postpone senescence, promote the development of lateral buds, improve chloroplast development, and enhance cell expansion in cotyledon leaves.
What is cytokinin plant hormone?
Cytokinins are a class of plant growth regulators that are principally responsible for the process of cell division in the plant’s roots and shoots. This hormone contributes to the promotion of cell proliferation, development, and differentiation. It also has an effect on apical dominance and delays the senescence of leaf tissue.
What does gibberellins do in plants?
Gibberellin (GA), a hormone produced by plants, is responsible for controlling many elements of plant development, including germination, growth elongation, flower formation, and the timing of blooming.
Which of the following plant hormones prevents senescence and can initiate leaf growth?
Which of the following plant hormones inhibits senescence and promotes the development of new leaves? Coconut milk was found to contain a hormone known as cytokinin, which has been shown to encourage the division of cells.
What is auxin function?
The hormone auxin encourages the expansion of plant cells and the plant’s overall length. During the process of elongation, auxin changes the flexibility of the plant wall, which makes it simpler for the plant to extend its stem upward. Auxin has an effect on the production of roots as well.
What do cytokinins do?
Cytokinins were originally defined as chemicals that induce cell proliferation and trigger callus differentiation to shoot when applied with auxins. However, it is now known that cytokinins play a key role in many aspects of plant growth and development, including embryogenesis, maintenance of root and shoot meristems, and the formation of secondary roots and shoots.
Which of the following plant hormone causes a delay in leaf senescence?
Cytokinins are a type of plant hormone that may have a wide variety of impacts on the plants they are found in. It involves things like postponing senescence and active cell division, among other things. Cytokinins stimulate proteins that are necessary for mitosis, which results in increased cell division.