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The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .
Molecular clock analyses indicated that Dactyloradula diverged from other Radula species during the Mesozoic era, positioning it as an ancient genus-level lineage. The estimated age of divergence placed it as old as many flowering plant families, unusual for what was previously considered just one species within a larger genus.
Radula acutiloba Steph. Radula aguirrei R.M.Schust. ex M.A.M.Renner Radula allisonii Castle Radula amentulosa Mitt. Radula amoena Herzog Radula anceps Sande Lac. Radula aneurysmalis (Hook.f. & Taylor) Gottsche, Lindenb. & Nees Radula angulata Steph. Radula anisotoma M.A.M.Renner Radula appressa Mitt. Radula aquilegia (Hook.f. & Taylor) Gottsche ...
The most common compounds found in Radula species are 3,5-dihydroxy-2-(3-methyl-2-butenyl)bibenzyl and 2-geranyl-3,5-dihydroxybibenzyl, which often form the basic structure for more complex molecules in these plants. [17] Of particular interest is the presence of compounds similar to those found in cannabis (cannabinoids) in some Radula species
Radla (or Radula, died after 1000) was a Czech priest and tutor of Saint Adalbert of Prague (Czech: Svatý Vojtěch). Only little is known about life of Radla and the available information is often contradictory. He could be the bastard son of Slavník, the founder of Slavník's dynasty and father of Adalbert.
Cladoradula perrottetii is a species of liverwort is the family Radulaceae. [2] It is distributed across tropical and subtropical Southeast Asia, occurring in Thailand, Sumatra, Taiwan and Japan. It contains the small molecule perrottetinene, a cannabinoid, [3] [4] and other secondary metabolites of scientific interest including marchantin A. [5]
This organ is involved in chemoreception - that is, in judging the nature of food or the substratum. In this sense, it can be considered a 'smell' or 'taste' organ; food is sensed before each stroke of the radula. [1] Nerve cells from the subradular organ join into the buccal nerves. [2]
Radula visianica is a small, green to yellowish-green plant that grows in patches. Individual shoots are typically 0.3–1.5 mm (0.012–0.059 in) wide and can reach up to 20 mm (0.79 in) in length.