chromoplast

/'krouməplæst/

Thân thiện

A student observes the yellow chromoplasts in a carrot cell under a microscope.

Definition

1. Noun:
   • A type of plastid containing pigments other than chlorophyll: A chromoplast is a specialized plant cell organelle that synthesizes and stores pigments, typically yellow, orange, or red carotenoids, which give color to fruits, flowers, and some roots.

Examples of Usage

• Noun:
  • The bright red color of the tomato is due to chromoplasts containing the pigment lycopene.
  • Chromoplasts in carrot roots store beta-carotene, which is orange.

Advanced Usage

• Scientific Context: In botany and cell biology, "chromoplast" is used to describe a plastid that has differentiated from a proplastid or chloroplast and is dedicated to pigment synthesis and storage, often contributing to pollination and seed dispersal by making plant parts visually attractive.
  • The differentiation of chloroplasts into chromoplasts is a key part of fruit ripening.

Variants and Related Words

• Chromoplastic (adj): Relating to or characteristic of chromoplasts.
  • The chromoplastic development was studied under the microscope.

Synonyms

• Pigment plastid: A general descriptive term for a plastid containing pigments.
• Carotenoid plastid: A more specific term highlighting the common pigment type.

Related Terms (Not Phrasal Verbs)

• Chloroplast (n): A type of plastid containing chlorophyll, responsible for photosynthesis.
• Leucoplast (n): A colorless plastid involved in storing starch, lipids, or proteins.

Học thuật

Noun

1. plastid containing pigments other than chlorophyll usually yellow or orange carotenoids