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Planorbarius corneus is the largest European species of ramshorn snail (family Planorbidae), with a shell typically measuring 35 millimetres (1.4 in) across when fully-grown. [ 4 ] The 10–17 by 22–40 millimetres (0.39–0.67 by 0.87–1.57 in) coiled shell has between 3 and 4.5 rounded whorls with deep sutures, the last whorl predominating.
Double-shelled eggs, where an egg may have two or more outer shells, is caused by a counter-peristalsis contraction and occurs when a second oocyte is released by the ovary before the first egg has completely traveled through the oviduct and been laid. [31] Shell-less or thin-shelled eggs may be caused by egg drop syndrome. [32]
The bird egg is a fertilized gamete (or, in the case of some birds, such as chickens, possibly unfertilized) located on the yolk surface and surrounded by albumen, or egg white. The albumen in turn is surrounded by two shell membranes (inner and outer membranes) and then the eggshell. The chicken eggshell is 95 [citation needed] -97% [ 2 ...
Heliciculture. A snail farm near Eyragues, Provence, France. Heliciculture, commonly known as snail farming, is the process of raising edible land snails, primarily for human consumption or cosmetic use. [ 1 ] The meat and snail eggs a.k.a. white caviar can be consumed as escargot and as a type of caviar, respectively. [ 2 ]
A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is usually edible. In general usage and in a culinary sense, many dry seeds are called nuts. In a botanical context, "nut" implies that the shell does not open to release the seed (indehiscent). [ 1 ]
Balut (/ b ə ˈ l uː t / bə-LOOT, / ˈ b ɑː l uː t / bah-LOOT; [1] also spelled as balot) is a fertilized developing egg embryo that is boiled or steamed and eaten from the shell. It is commonly sold as street food most notably in the Philippines , Cambodia ( Khmer : ពងទាកូន , paung tea kaun ) and Vietnam ( Vietnamese ...
Cornu aspersum(syn. Helix aspersa, Cryptomphalus aspersus), known by the common namegarden snail, is a species of land snailin the family Helicidae, which includes some of the most familiar land snails. Of all terrestrial molluscs, this species may well be the most widely known. It was classified under the name Helix aspersafor over two ...
It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp, and borne in a cup-shaped cupule. [ 1 ][ 2 ] Acorns are 1–6 cm (1⁄2 – 2+1⁄2 in) long and 0.8–4 cm (3⁄8 – 1+5⁄8 in) on the fat side. Acorns take between 5 and 24 months (depending on the species) to ...