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Diatoms and sponge spicules. Coloured scanning electron micrograph (SEM) of a circular arrangement of various diatoms and sponge spicules. Diatoms are
Diatoms and sponge spicules. Coloured scanning electron micrograph (SEM) of a circular arrangement of various diatoms and sponge spicules. Diatoms are planktonic unicellular algae. They have a mineralised cell wall (frustule) divided into two halves. The frustule contains silica and provides protection and support. Sponges are primitive aquatic organisms that filter food from the water. They are a loose aggregation of cells supported by spicules and needles composed of silica
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Photo credit: © STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: -, alga, algae, algal, arrangement, assorted, assortment, botany, circle, circular, coloured, cule, design, diatom, diatoms, fauna, frustule, frustules, invertebrate, invertebrates, marine, multiple, nature, pattern, phytoplankton, plankton, planktonic, plant, porifera, poriferan, protection, protective, repeated, rounded, sem, single-celled, spicules, sponge, structural, support, supportive, tethya., unicellular, wheel