cycadales

Thân thiện

Cycadales are ancient plants with large, palm-like fronds.

Definition

1. Noun:
   • A taxonomic order of primitive gymnospermous plants: The Cycadales are an order of seed-producing plants that are considered living fossils, having been abundant during the Mesozoic era but now surviving only in scattered tropical and subtropical regions.

Usage Examples

• Noun:
  • The Cycadales are often studied by botanists interested in plant evolution.
  • Fossil records show that the Cycadales were once a dominant group of plants.

Advanced Usage

• In botanical classification: The term is used in scientific contexts to categorize a specific order within the division Cycadophyta.
  • The classification places the genus Cycas within the order Cycadales.

Variants and Related Words

• Cycad (n): A common name for any plant belonging to the order Cycadales.
  • The sago palm is a well-known type of cycad.
• Cycadophyta (n): The division or phylum to which the order Cycadales belongs.
  • Cycadophyta includes several extinct orders alongside the Cycadales.

Synonyms

• Cycad order: A less formal synonym for Cycadales.
• Sago palms (common name, for some members): Refers to certain species within the order, like .

Related Terms (Scientific Context)

• Gymnosperm (n): A major group of seed-producing plants that includes conifers and cycads, characterized by seeds not enclosed in an ovary.
  • Cycadales are one of the orders of gymnosperms.
• Mesozoic (adj/n): Relating to the geologic era when Cycadales were most abundant.
  • Cycadales thrived in the Mesozoic era.

Học thuật

Noun

1. primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms

Từ đồng nghĩa

• Cycadales
• order Cycadales