Important Notes For Neet Plant Growth And Development

Plant Growth and Development: Important Points, Summary, Revision, Highlights

Phases of Growth

Arithmetic Growth

Geometric Growth

Differentiation

Dedifferentiation

Redifferentiation

Plant Hormones

Auxins

Gibberellins

Cytokinins

Ethylene

Abscisic Acid

Brassinosteroids

Photoperiodism

Vernalisation

Seed Dormancy

Expansion

It is a quantitative parameter that refers to an irreversible increase in size or weight of a cell, tissue, or organ. Plants are capable of continual growth due to the presence of meristematic tissues in certain parts of their bodies.

Growth can be measured by an increase in cell number, length, area, volume, and dry or wet weight.

Primary Growth: Apical Meristems of both Roots and Shoots are responsible for the Primary Growth.

Secondary Growth: Secondary growth is caused by lateral meristems, such as vascular and cork cambium. This growth leads to an increase in the plant’s girth.



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