. Elementary text-book of zoology [electronic resource]. Zoology. ASCiDIA. 2^9 An incision will reveal at once that the body of the animal is enveloped in a thick test (or imiic), out of ^hich Internal animal may be removed entire, like a bean Features P°^' ^^^^ thick, and of a semi - transparent gelatinous appearance. It is produced chiefly by the layer of underlying ectoderm Yg. 20I.—Diagrammatic Median Longitudinal Section THROUGH AN AsCIDIAN. Mouth. Atriopore.. Buccal Cavity. Peri-Pharyn- geal Groove. Pharyngeal -V Clefts. Mantle (Ectoderm), Endostyle, Pharyngeal part of Ventral Ves'iel.
![. Elementary text-book of zoology [electronic resource]. Zoology. ASCiDIA. 2^9 An incision will reveal at once that the body of the animal is enveloped in a thick test (or imiic), out of ^hich Internal animal may be removed entire, like a bean Features P°^' ^^^^ thick, and of a semi - transparent gelatinous appearance. It is produced chiefly by the layer of underlying ectoderm Yg. 20I.—Diagrammatic Median Longitudinal Section THROUGH AN AsCIDIAN. Mouth. Atriopore.. Buccal Cavity. Peri-Pharyn- geal Groove. Pharyngeal -V Clefts. Mantle (Ectoderm), Endostyle, Pharyngeal part of Ventral Ves'iel. Stock Photo](https://c8.alamy.com/comp/RJNAK4/elementary-text-book-of-zoology-electronic-resource-zoology-ascidia-29-an-incision-will-reveal-at-once-that-the-body-of-the-animal-is-enveloped-in-a-thick-test-or-imiic-out-of-hich-internal-animal-may-be-removed-entire-like-a-bean-features-p-thick-and-of-a-semi-transparent-gelatinous-appearance-it-is-produced-chiefly-by-the-layer-of-underlying-ectoderm-yg-20idiagrammatic-median-longitudinal-section-through-an-ascidian-mouth-atriopore-buccal-cavity-peri-pharyn-geal-groove-pharyngeal-v-clefts-mantle-ectoderm-endostyle-pharyngeal-part-of-ventral-vesiel-RJNAK4.jpg)
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. Elementary text-book of zoology [electronic resource]. Zoology. ASCiDIA. 2^9 An incision will reveal at once that the body of the animal is enveloped in a thick test (or imiic), out of ^hich Internal animal may be removed entire, like a bean Features P°^' ^^^^ thick, and of a semi - transparent gelatinous appearance. It is produced chiefly by the layer of underlying ectoderm Yg. 20I.—Diagrammatic Median Longitudinal Section THROUGH AN AsCIDIAN. Mouth. Atriopore.. Buccal Cavity. Peri-Pharyn- geal Groove. Pharyngeal -V Clefts. Mantle (Ectoderm), Endostyle, Pharyngeal part of Ventral Ves'iel. Heart Gonad. Stomach. Intestinal part of Ventral Vessel. The risht half has been removed. and consists of a hyaline basis containing cellulose (a material mainly confined to the plant-kingdom), through which are scattered a number of cells. Below the M. 20. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University College, London. Library Services. Edinburgh : E. & S. Livingstone