| 释义 |
Definition of arrow worm in English: arrow wormnoun A slender transparent wormlike animal with fins, having spines on the head for grasping prey. It is common in marine plankton. Phylum Chaetognatha Also called chaetognath Example sentencesExamples - Early Cambrian ‘protoconodonts’ are currently believed to be the unrelated remains of chaetognaths (or ‘arrow worms’).
- Chaetognaths (commonly named arrow worms) are transparent marine metazoans, ranging in size from 2 to 120 mm.
- As mentioned, the chaetognaths (‘arrow worms’) are clearly orthodox bilaterians.
- Chaetognaths, commonly called arrow worms, were considered deuterostomes based on their tripartite coelom and the retention of the blastopore to form the anus.
- Chaetognaths (‘arrow worms’) were considered to be deuterostomes until quite recently, when they were relocated to the protostomes.
Definition of arrow worm in US English: arrow wormnoun A slender transparent wormlike animal with fins, having spines on the head for grasping prey. It is common in marine plankton. Phylum Chaetognatha Also called chaetognath Example sentencesExamples - Early Cambrian ‘protoconodonts’ are currently believed to be the unrelated remains of chaetognaths (or ‘arrow worms’).
- As mentioned, the chaetognaths (‘arrow worms’) are clearly orthodox bilaterians.
- Chaetognaths (‘arrow worms’) were considered to be deuterostomes until quite recently, when they were relocated to the protostomes.
- Chaetognaths, commonly called arrow worms, were considered deuterostomes based on their tripartite coelom and the retention of the blastopore to form the anus.
- Chaetognaths (commonly named arrow worms) are transparent marine metazoans, ranging in size from 2 to 120 mm.
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