Plant Hormones and Growth

These flashcards cover key vocabulary terms related to plant hormones and growth processes discussed in the lecture notes.

Gibberellins

Plant hormones that promote stem elongation, seed germination, and flowering.

Auxin

A plant hormone that causes the bending of plants toward light and regulates cell elongation.

Cytokinins

Plant hormones that promote cell division (cytokinesis) and influence cell differentiation.

Ethylene

A gaseous plant hormone that regulates fruit ripening, leaf abscission, and aging of flowers.

Abscisic Acid (ABA)

A plant hormone that promotes seed dormancy and helps plants respond to stress.

Gravitropism

A growth response in plants where roots grow downwards and shoots grow upwards, influenced by gravity.

Acid-Growth Hypothesis

A theory that explains how auxin induces cell elongation by loosening the cell wall.

Phototropism

The directional growth of a plant in response to light, primarily facilitated by auxin.

Transcription Factors

Proteins that bind to regulatory sequences in DNA to control gene expression.

Polar Transport

The directional movement of auxin in plants, affecting growth patterns and cell elongation.