![a) Infection sac-like structure (arrow) at a tip of the long Chilean... | Download Scientific Diagram a) Infection sac-like structure (arrow) at a tip of the long Chilean... | Download Scientific Diagram](https://www.researchgate.net/publication/226358790/figure/fig2/AS:452176444170243@1484818673962/a-Infection-sac-like-structure-arrow-at-a-tip-of-the-long-Chilean-P-chilensis-root.png)
a) Infection sac-like structure (arrow) at a tip of the long Chilean... | Download Scientific Diagram
![The porifera and coelentera . sac-like body, and also the tentacles andperistome are always composed of three layers of tissue, of whichtwo, the external layer or ectoderm, and the internal layer orendoderm, The porifera and coelentera . sac-like body, and also the tentacles andperistome are always composed of three layers of tissue, of whichtwo, the external layer or ectoderm, and the internal layer orendoderm,](https://c8.alamy.com/comp/2AXG9RJ/the-porifera-and-coelentera-sac-like-body-and-also-the-tentacles-andperistome-are-always-composed-of-three-layers-of-tissue-of-whichtwo-the-external-layer-or-ectoderm-and-the-internal-layer-orendoderm-are-always-cellular-and-are-coextensive-and-identicalwith-the-epiblast-and-hypoblast-of-the-embryo-the-third-layer-lying-between-the-ectoderm-and-endodermvaries-considerably-in-structure-and-importance-in-different-groujisof-the-coelentera-typically-it-is-not-a-cellular-layer-but-is-ofgelatinous-consistency-and-is-formed-as-a-sort-of-secretion-fromthe-ectoderm-in-some-cases-the-en-2AXG9RJ.jpg)
The porifera and coelentera . sac-like body, and also the tentacles andperistome are always composed of three layers of tissue, of whichtwo, the external layer or ectoderm, and the internal layer orendoderm,
![TSBV infected prepupae showing sac-like appearance and colour changes... | Download Scientific Diagram TSBV infected prepupae showing sac-like appearance and colour changes... | Download Scientific Diagram](https://www.researchgate.net/publication/311948722/figure/fig1/AS:613935568912405@1523385054578/TSBV-infected-prepupae-showing-sac-like-appearance-and-colour-changes-from-pale-white-to.png)
TSBV infected prepupae showing sac-like appearance and colour changes... | Download Scientific Diagram
![Statocyst consists of a sac-like structure containing a statolith, a... | Download Scientific Diagram Statocyst consists of a sac-like structure containing a statolith, a... | Download Scientific Diagram](https://www.researchgate.net/publication/338521390/figure/fig1/AS:867474736173071@1583833502860/Statocyst-consists-of-a-sac-like-structure-containing-a-statolith-a-mineralised-mass.png)
Statocyst consists of a sac-like structure containing a statolith, a... | Download Scientific Diagram
![Coral, marine invertebrates live in compact colonies of many similar and identical individual polyps, sac-like animals with tentacles around a central Stock Vector Image & Art - Alamy Coral, marine invertebrates live in compact colonies of many similar and identical individual polyps, sac-like animals with tentacles around a central Stock Vector Image & Art - Alamy](https://c8.alamy.com/comp/2BTGHYK/coral-marine-invertebrates-live-in-compact-colonies-of-many-similar-and-identical-individual-polyps-sac-like-animals-with-tentacles-around-a-central-2BTGHYK.jpg)