Flagellum
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A flagellum is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores, and from a wide range of microorganisms to provide motility. Many protists with flage
SEM image of flagellated eukaryote Chlamydomonas sp. (10000×)
Longitudinal section through the flagella area in Chlamydomonas reinhardtii. In the cell apex is the basal body that is the anchoring site for a flagellum. Basal bodies originate from and have a substructure similar to that of centrioles, with nine peripheral microtubule triplets (see structure at bottom center of image).
The "9+2" structure is visible in this cross-section micrograph of an axoneme.
Multiple flagella in lophotrichous arrangement on surface of Helicobacter pylori
Motility
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Motility is the ability of an organism to move independently by using metabolic energy. This biological concept encompasses movement at various levels, from whole organisms to cells and subcellular co
Flagellum
…appendage that protrudes from certain plant and animal sperm cells, from fungal spores (zoospores), and from a wide range of microorganisms to provide motility. Many protists with flagella are known as flagellates. Across the three domains of Bacteria, Archaea, and Eukaryota, the flagellum has a different…
Most sperm have a single flagellum to help them swim. The cervical, uterine, and fallopian linings of the female reproductive system play a more important role in transporting sperm to ova.
The shoots of plants move by growing towards light. This is known as positive phototropism. The roots grow away from light. This is known as negative phototropism.
Cell division. All cells can be considered motile for having the ability to divide into two new daughter cells.