Definition

1. Noun:
   • A taxonomic division of algae: "Division Heterokontophyta" refers to a major group of algae characterized by having chlorophyll a and usually chlorophyll c, and possessing two flagella of unequal lengths. In some biological classification systems, this group supersedes the older classification "Chrysophyta."

Usage Examples

• Noun:
  • The division Heterokontophyta includes many important photosynthetic organisms like diatoms and brown algae.
  • In the revised taxonomy, the division Heterokontophyta encompasses species previously classified under Chrysophyta.

Advanced Usage

• In scientific classification: The term is used in formal taxonomic contexts to group a diverse array of algae based on specific cellular and pigment characteristics.
  • The phylogeny of the division Heterokontophyta is a key subject in phycology.

Variants and Related Words

• Heterokont (n/adj): A member of or pertaining to the Heterokontophyta; often used to describe the characteristic unequal flagella.
  • The heterokont structure is a defining feature.
• Stramenopile (n): An alternative name for a broader group that includes Heterokontophyta and other protists.
  • Some classifications place these algae within the stramenopiles.

Synonyms

• Heterokonts: A common informal synonym for the organisms within this division.
• Stramenopiles: In broader taxonomic contexts, this term is often synonymous with or inclusive of Heterokontophyta.

Related Phrases

• Heterokont algae: A descriptive phrase for algae belonging to this division.
  • The study focused on the ecology of heterokont algae.

Related Idioms

• This is a precise scientific term with no idiomatic usage.

Noun

1. algae having chlorophyll a and usually c, and flagella of unequal lengths; terminology supersedes Chrysophyta in some classifications