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Hace 1 día · Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have complex nervous, digestive or circulatory systems like humans.
Hace 4 días · Sea sponges exhibit remarkable diversity in their shapes, sizes, and colors. They can range from encrusting varieties that adhere to rocks or coral reefs, to branching types that resemble trees underwater.
Hace 1 día · The mystery of the missing sea sponges centred on a paradox. Molecular clock estimates, which involve measuring the number of genetic mutations that accumulate within the Tree of Life over time, indicate that sponges must have evolved about 700 million years ago. And yet, there had been no convincing sponge fossils found in rocks that old.
Hace 5 días · Porifera, or sponges, are captivating organisms with a rich array of traits and characteristics, making them a subject of fascination for scientists and nature enthusiasts alike. As the simplest multicellular animals, Porifera offer valuable insights into the early evolution of life on Earth.
Hace 1 día · At first glance, the simple sea sponge is no creature of mystery. No brain. No gut. No problem dating it back 700 million years. Yet convincing sponge fossils only go back about 540 million years ...
Hace 4 días · Sponges have a unique feeding system among animals. Instead of a mouths they have tiny pores ( ostia ) in their outer walls through which water is drawn. Cells in the sponge walls filter food from the water as the water is pumped through the body and the osculum ("little mouth").
Hace 5 días · Discover 20 fascinating facts about vase sponges, including their habitat, unique characteristics, and ecological importance. Explore the wonders of these captivating marine organisms!
