hydathode

Thân thiện

A single drop of water emerges from a hydathode at the tip of the leaf.

Definition

Noun: A specialized pore, typically found on the leaf edges or surfaces of vascular plants, that secretes water in a process called guttation. It is a structure involved in the release of excess water and dissolved minerals from the plant's interior.

Usage

The term is used in botanical and biological contexts to describe a specific anatomical feature of plants. * The primary function of a hydathode is to exude liquid water. * Hydathodes are often located at the tips or margins of leaves. * In some plants, visible water droplets form at the hydathodes in the early morning.

Examples

• Botanists studied the hydathode to understand the plant's water regulation mechanism.
• The presence of water droplets on the strawberry leaf indicated active hydathodes.
• Guttation occurs when root pressure forces water out through the hydathodes.

Advanced Usage

• Hydathode function is distinct from stomatal transpiration, as it involves the release of liquid rather than water vapor.
• The structure of a hydathode often includes a pore and associated epithem (loose parenchyma) tissue.

Variants and Related Words

• Water pore: A common synonym for hydathode.
• Guttation: (Noun) The process of water secretion from hydathodes.
• Stoma: (Noun) A different type of pore used primarily for gas exchange and transpiration of water vapor.

Synonyms

• Water pore

Antonyms

• Stoma (while both are pores, their functions—liquid secretion vs. gas/vapor exchange—are opposing in key aspects)

Học thuật

Noun

1. a pore that exudes water on the surface or margin of a leaf of higher plants

Từ đồng nghĩa

• water pore
• water stoma