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3 Δεκ 2020 · Jellyfish are made up of three layers; epidermis, mesoglea, and the gastrodermis. The epidermis forms their outer layer which contains the nerve net. The middle layer is made up of the mesoglea which is a thick, elastic, jelly-like substance.
16 Ιουν 2024 · They are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis. An elementary nervous system, or nerve net, allows jellyfish to smell, detect light, and respond to other stimuli.
5 Ιουν 2024 · The umbrella consists of several layers: Epidermis: the outermost layer composed of epithelial cells. It protects the jellyfish from the marine environment and contains sensory and receptor cells that detect environmental stimuli such as light and pressure. Mesoglea: the intermediate gelatinous layer that makes up most of the umbrella's volume ...
AdstockRF. Scientists divide jellyfish into two main groups. There are approximately 200 known species in the Class Scyphozoa, or “true” jellyfish. These include the moon jellyfish (genus Aurelia ) and the sea nettles (genus Chrysaora). The Class Cubozoa, or box jellyfish, includes about 20 known species. Distribution and Habitat.
Jellyfish are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
Jellyfish are found all over the world, from surface waters to the deep sea. Scyphozoans (the "true jellyfish") are exclusively marine, but some hydrozoans with a similar appearance live in fresh water. Large, often colorful, jellyfish are common in coastal zones worldwide.
6 Ιαν 2021 · (A) The exumbrellar surface of the mesoglea is covered with a three-layered sheet, which includes the outer, middle (ml), and basal layers (bl). (B) Enlargement of the outer layer overlying the middle layer. Facing arrowheads indicate the outer layer. bl, basal layer; me, mesoglea; ml, middle layer. Scale bars: 0.5 µm for (A), 0.2 µm for (B).
