gymnosperm

/'dʤimnəspə:m/

Thân thiện

A pine tree is a common example of a gymnosperm.

Definition

1. Noun:
   • A gymnosperm is a type of plant whose seeds are not enclosed within an ovary or fruit. Instead, the seeds are typically exposed on the surface of scales or leaves, often in cones. This group includes conifers, cycads, ginkgo, and gnetophytes.

Usage Examples

• Noun:
  • Pine trees and firs are common examples of a gymnosperm.
  • The fossil record shows that the gymnosperm was the dominant plant group during the Mesozoic era.
  • Botanists study the unique reproductive cycle of a gymnosperm.

Advanced Usage

• In Botanical Classification: The term is used to distinguish these plants from angiosperms (flowering plants), which have enclosed seeds.
  • The key difference between a gymnosperm and an angiosperm lies in seed protection.

Variants and Related Words

• Gymnospermous (adj): Having the characteristics of gymnosperms.
  • The gymnospermous nature of the plant was evident from its naked seeds.

Synonyms

• Non-flowering plant (in a broad, non-technical sense): This is a general synonym, though not all non-flowering plants are gymnosperms (e.g., ferns).
• Conifer (a specific, major subgroup): While many gymnosperms are conifers, not all are (e.g., cycads are gymnosperms but not conifers).

Different Meanings

• The term gymnosperm has a single, specific meaning in botany and does not have other common definitions.

Idioms

• There are no common idioms specifically using the word gymnosperm.

Phrasal Verbs

• There are no phrasal verbs using the word gymnosperm.

Học thuật

Noun

1. plants of the class Gymnospermae having seeds not enclosed in an ovary