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wing. Flight in these insects is accomplished by altering the shape of the dorsal surface of the tergum to which the wings are attached. When the tergal surface is buckled or arched, the wings are forced downward; when the tergum is depressed, the wings rise upward. The dorsal longitudinal muscles, extending
22 lut 2005 · These single-celled and colony forming eukaryotes are distinguished by their small size (3–10 μm), lack of a chloroplast and unique architecture: a spherical or ovoid cell crowned by a fine collar (‘choano’ means collar) of actin-filled microvilli subtending a single apical flagellum.
1 wrz 2000 · A comprehensive overview of the functional morphology of insect wings from the viewpoint of general biology. Dmitry L. Grodnitsky uses these data to help further explain animal morphology.
14 mar 2022 · Get free biology worksheets, notes, quizzes, and slides that you can download and print in PDF, PNG, and Google Classroom formats.
The cell body of the choanocyte is embedded in mesohyl but protruding into the spongocoel is a mesh-like collar surrounding a single flagellum. The beating of flagella from all choanocytes moves water through the sponge.
1 lut 2004 · The feather is a complex epidermal organ with hierarchical branches and represents a multi-layered topological transformation of keratinocyte sheets. Feathers are made in feather follicles.
31 paź 2023 · Homology is the relationship between structures or DNA derived from the most recent common ancestor. A common example of homologous structures in evolutionary biology are the wings of bats and the arms of primates.
