Hormones which help in growth of plant stem:a)Cytokinin and abscisic acidb)Auxin and abscisic acidc)Ethylene and gibberellind)Auxin and gibberellinCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Yes the option d is correct auxin help cell. to grow faster and longer and gibberellin also promote cell enlargement in the presence of auxin but the cytokinins control the cell enlargement ; ethylene is the gaseous harmone which help in conversion of glucose into starch and abscisic acid is a growth inhibiting harmone and promote wilting of leaves ( ABSCISIC ACID IS ALSO KNOWN AS PLANT STRESS HARMONE

Answer

Auxin and gibberelines  are the approval part of plant hormone and this process of plant hormone has different types which bales a plant to grow on which auxin and gibberelines has the ability to be the processor of growth in plant stem

Answer

Hormones which help in growth of plant stem:

The correct answer is option 'D': Auxin and gibberellin.

Explanation:

Auxin:
- Auxin is a plant hormone that plays a crucial role in the growth and development of plant stems.
- It is produced in the apical meristem of the plant and is responsible for elongation of the stem.
- Auxin promotes cell division and elongation, which results in the growth of the stem.
- It also helps in the differentiation of vascular tissues, which are responsible for transporting water and nutrients throughout the plant.

Gibberellin:
- Gibberellin is another plant hormone that aids in stem growth.
- It is produced in the young leaves, roots, and developing seeds of the plant.
- Gibberellin promotes stem elongation by stimulating cell division and elongation.
- It also helps in the mobilization of stored nutrients, which are essential for the growth of the stem.

Interplay between Auxin and Gibberellin:
- Auxin and gibberellin often work together to promote stem growth.
- Auxin is primarily responsible for cell elongation, while gibberellin helps in cell division and elongation.
- The presence of both hormones ensures proper growth and development of the stem.
- They also interact with each other to regulate the expression of genes involved in stem growth.

Other Hormones:
- Cytokinin and abscisic acid (option A) do not directly promote stem growth.
- Cytokinin is involved in cell division and differentiation in the root and shoot meristems.
- Abscisic acid is responsible for regulating various physiological processes in plants, such as seed dormancy and stomatal closure.
- Ethylene and gibberellin (option C) can have contrasting effects on stem growth.
- Ethylene is involved in the senescence and abscission of plant organs, while gibberellin promotes stem elongation.

In conclusion, auxin and gibberellin are the hormones that primarily contribute to the growth of plant stems. They work together to promote cell division, elongation, and differentiation, ensuring proper stem development.

Similar Class 10 Doubts

Two plant hormones which regulate growth of plants are?

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Functions if auxin, gibberellin, cytokinin,ethylene, abscisic acid

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