seta

A noun referring to a stiff hair, bristle, or the stalk of a moss capsule.

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1. Stalk of a moss capsule C2 formal scientific

   The slender stalk that supports the capsule (sporangium) in mosses and some liverworts.

   • The seta elongates to raise the capsule above the gametophyte.
   • In many mosses, the seta is a key structure for spore dispersal.
   • The length of the seta varies among different moss species.

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   المرادفات: pedicelstalk

2. A stiff hair or bristle C2 formal scientific

   A rigid, hair-like structure found on the bodies of some animals, such as annelid worms and arthropods.

   • Each segment of the earthworm has several pairs of setae.
   • The setae on a caterpillar's body help with locomotion.
   • In polychaete worms, setae can be used for defense.

   🌐شعرة صلبة

   المرادفات: chaeta