hướng địa

Rễ cây non mọc thẳng xuống đất thể hiện tính hướng địa.

Definition

1. Adjective:

   • Geotropic: In botany, describes the growth or movement of a plant part in response to gravity. A primary root exhibiting positive geotropism grows downward, toward the center of the earth.

2. Noun:

   • Geotropism: The phenomenon or property of growth in response to gravity. It is a specific type of tropism (directional growth response).

Usage Examples

• Adjective:
  • Rễ cây có tính hướng địa dương. (Plant roots are positively geotropic.)
• Noun:
  • Hướng địa là một phản ứng sinh trưởng quan trọng. (Geotropism is an important growth response.)

Advanced Usage

• "hướng địa dương": positive geotropism (growth toward gravity, e.g., roots).
• "hướng địa âm": negative geotropism (growth away from gravity, e.g., stems).

Variants and Related Words

• Tính hướng địa (n): the property of geotropism.
• Hướng động (n): tropism (a general term for directional growth responses to stimuli).

Synonyms

• Gravitropic: A more modern scientific synonym for geotropic.
• Geotropic: Pertaining to growth in response to gravity.

Related Scientific Terms

• Phototropism: Growth in response to light.
• Thigmotropism: Growth in response to touch.