anatropous

/ə'nætrəpəs/

Thân thiện

The botanist examines an anatropous ovule under the microscope.

Definition

Adjective (Botany) 1. Completely inverted; turned back 180 degrees on its stalk: Describes the orientation of a plant ovule where the ovule is bent over so that the micropyle (the opening for pollen) is positioned close to the point of attachment (the funiculus or stalk). This is the most common ovule orientation in flowering plants.

Usage

The term is a technical adjective used almost exclusively in botanical contexts to classify ovule types. It describes a specific morphological structure. * The anatropous ovule is the most common type found in angiosperms (flowering plants). * In an anatropous ovule, the chalaza (the base) and the micropyle (the opening) lie in a straight line.

Examples

• Adjective:
  • Botanists classify the ovule of a lily as anatropous.
  • The development of the seed depends on the orientation of the anatropous ovule.
  • Compared to orthotropous ovules, anatropous ovules are far more prevalent.

Advanced Usage

• Anatropous ovule: This is the standard compound term. The adjective "anatropous" is rarely used without the noun "ovule" in technical descriptions.
  • The diagram clearly shows the structure of an anatropous ovule.

Variants and Related Words

• Anatropy (noun): The state or condition of being anatropous.
  • Anatropy is a characteristic feature of many plant families.

Different Meanings

This word has a single, highly specialized meaning in the field of botany. It does not have common, everyday definitions.

Synonyms

• Inverted (in a general sense, though less precise)
• Reversed (in a general sense, though less precise)

Note: There are no common idioms or phrasal verbs associated with this highly technical term.

Học thuật

Adjective

1. (of a plant ovule) completely inverted; turned back 180 degrees on its stalk

Từ đồng nghĩa

• inverted