Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 777phidae larva having a long flexible respiratory tube extendingfrom the end of the body.ray n. [L. radius, ray] 1. One of a number of fine lines radiatingfrom a center. 2. Each arm of the triradiate lumen ofnematodes and other pseudocoelomates. 3. A division of aradiate animal.reafference n. [L. re, again; afferre, to bring] Sensory impulsescaused by an animal's movements relative to theenvironment. see afference.reborded a. [F. rebord, rim] (ARTHRO: Chelicerata) In Acarina,pertaining to the distal thickened and strengthened end ofthe labium.recapitulation theory The theory that ontogeny recapitulatesphylogeny.recent n. [L. recens, new] Taxa still in existence.receptacle n. [L. recipere, to receive] Any organ that receivesand stores; acting as a repository.receptaculum n. [L. recipere, to receive] A receptacle.receptaculum seminalis/seminis see seminal receptaclereceptor n. [L. recipere, to receive] A structure specialized forreceiving a particular kind of stimulus.recessive allele 1. The failure of an allele to affect the phenotypeof the heterozygote. 2. A term applied to organismsdisplaying recessive characters. see double recessive,dominant allele.recessive character A character of one parent that manifestsitself in the offspring only if it is homozygous in the offspring.reciprocal feeding Trophallaxis.reclinate a. [L. re, back; clinare, to lean] Inclined backward.reclivous, reclivate a. [L. re, back; clivus, slope] 1. Havingthe form of a sigmoid curve; a convex and concave line. 2.(ARTHRO: Insecta) An insect wing vein having the front endfarther from the wing base than the hind end. see verticle,inclivous.recombinant a. [L. re, back; combinere, to join] Organisms or