How Do You Spell ANAMNIOTES?

Pronunciation: [ˈanɐmnɪˌə͡ʊts] (IPA)

The word "anamniotes" refers to a group of aquatic vertebrates that lay their eggs in water instead of on land. The spelling of this word is as follows: /ˌænəmˈnaɪoʊts/. The first syllable "an" is pronounced like "ann," the second syllable "amni" is pronounced like "am-nee," and the last syllable "otes" is pronounced like "oats." The phonetic transcription helps to accurately spell out the pronunciation of the word, making it easier to understand and say correctly.

Meaning and Definition
Common Misspellings
Etymology
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ANAMNIOTES Meaning and Definition

  1. Anamniotes refer to a group of vertebrate organisms characterized by their lack of amniotic egg development during embryonic development. This term encompasses two major groups: fishes (including jawless and cartilaginous fishes) and amphibians (including frogs, toads, salamanders, and caecilians). The name "anamniotes" is derived from the Greek words "an" meaning without and "amnion" referring to the thin membrane that surrounds the embryo in amniotic egg-laying animals.

    Anamniotes display distinct reproductive adaptations in comparison to amniotes (reptiles, birds, and mammals), as their eggs lack the amnion, chorion, and allantois membrane layers. Instead, these organisms typically lay eggs in water or in damp environments, which ensures the embryo remains hydrated. This dependency on water for reproduction is a notable characteristic of anamniotes.

    Additionally, anamniotes usually possess gills or external gill slits during some stage of their life cycle, enabling them to respire efficiently in aquatic environments. In the case of amphibians, this gill stage usually occurs during their larval phase, while fishes rely on gills throughout their entire lives.

    Anamniotes are considered evolutionary predecessors to amniotes, representing an important stage in the transition from aquatic to terrestrial life. They played a crucial role in shaping the biodiversity and evolutionary trajectory of vertebrates, influencing the development of amniotic eggs. Understanding anamniotes contributes to our understanding of the broader context of vertebrate evolution and the adaptations that facilitated colonization of land by these organisms.

Common Misspellings for ANAMNIOTES

Etymology of ANAMNIOTES

The word "anamniotes" comes from the Greek roots "an-" meaning "without" or "not", and "amnion" which refers to the thin membrane surrounding the embryos of reptiles, birds, and mammals. Therefore, the term "anamniotes" is used to describe a group of animals that lack an amnion, which includes fish and amphibians.