arrow worm meaning in Hindi

Examples

1. The arrow worms ( chaetognatha ) undulate their finned bodies, not unlike fish.
2. Herrings are a prominent converter of zooplankton into fish, consuming copepods, arrow worms, schools they inhabit.
3. Among lesser phyla of invertebrates are the Hemichordata, or acorn worms, and the Chaetognatha, or arrow worms.
4. With exception for the benthic species " Spadella ", arrow worms are all adapted for planktonic existence.
5. The phylum Chaetognatha ( arrow worms ) may belong here, but molecular studies have placed them in the protostomes more often.
6. Chaetognaths ( also known as arrow worms ) were thought possibly to be related to some of the animals grouped with the conodonts.
7. The Chaetognatha or arrow worms have been traditionally classified as deuterostomes, though recent molecular studies have identified this group as a basal protostome lineage.
8. The arrow worm rhabdomeres are derived from microtubules 20 nm long and 50 nm wide, which in turn form conical bodies that contain granules and thread structures.
9. In evolution, luciferins generally vary little : one in particular, coelenterazine, is the light emitting pigment for nine ancient arrow worms and vertebrates ( ray-finned fish ).
10. "' Nephrozoa "'is a clade of basal bilaterians in which the deuterostomes, and protostomes ( incl . the basal arrow worms ) emerged as sister clade of the Xenacoelomorpha.