Skip to main content
An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

NALT Concept Space
U.S. Department of Agriculture

NALT Core

Concept information

  1. Fields of Study
  2. physiology
  3. tropisms
  4. phototropism

Preferred term

phototropism

Type

  • Topic

Definition

  • Information The directional growth of organisms in response to light. In plants, aerial shoots usually grow towards light. The phototropic response is thought to be controlled by auxin, a plant growth substance

    Source: Medical Subject Headings 2015

    Type: Concept definition

Broader concept

In other languages

URI

https://lod.nal.usda.gov/nalt/57974

Download this concept:

RDF/XML TURTLE JSON-LD Created 1/19/06, last modified 3/22/19