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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 .
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
The main cannabinoids in Radula marginata are not THC or CBD, the most common psychoactive chemicals produced by cannabis, but they are of similar molecular structure. [4] The liverwort contains perrottetinene and perrottetinenic acid. [4] It also contains a CBD analogue called Perrottetinene diol (trans-PTD) [6]. The proportion of cannabinoids ...
Solidago radula is a perennial herb up to 90 cm (3 feet) tall, with a caudex and rhizomes. Lower leaves can be up to 10 cm (4 inches) long, leaves higher on the stem much smaller. One plant can produce as many as 260 small yellow flower heads in a branching array. The species grows in open rocky places and in dry woodlands. [6]
Knobbed whelk shells Busycon carica ssp. eliceans. The shell of most knobbed whelks is dextral, meaning that it is right-handed. If the shell is held in front of the viewer, with the spiral end up and the opening facing the viewer, the opening will be on the animal's right side.
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Indiana at Notre Dame | SMU at Penn State | Clemson at Texas | Tennessee at Ohio State. 12 things to know about the expanded 12-team field. We know the 12 teams in the new College Football Playoff ...
Gahnia radula, commonly known as the thatch saw-sedge is a tufted perennial sedge native to south-eastern Australia. The leaves are long, flat and rough, with sharp edges. It has a distinctive brown inflorescence, which darkens to black. It grows to 50–100 cm in height, spreads through its rhizomes and is found in eucalypt forest and grassy ...