WebAug 19, 2024 · Pollen Definition. Pollen refers to the powdery product synthesized by seed plants responsible for the production of the male gametes of the plant (shown below). The pollen grains are termed … Webair sac: 1. terminal dilation of the alveolar ducts, which give rise to alveoli in the lung; a small air chamber in the pulmonary tissue from which the pulmonary alveoli project like bays …

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Webcytoplasm: [noun] the organized complex of inorganic and organic substances external to the nuclear membrane of a cell and including the cytosol and membrane-bound organelles (such as mitochondria or chloroplasts) — see cell illustration. strip of leather crossword clue

Allantois - Definition, Function and Quiz Biology …

Webalveolus: [noun] a small cavity or pit: such as. a socket in the jaw for a tooth. a small air-containing compartment of the lungs in which the bronchioles terminate and from which respiratory gases are exchanged with the pulmonary capillaries. an acinus of a compound gland. a cell of a honeycomb. WebGolgi apparatus, also called Golgi complex or Golgi body, membrane-bound organelle of eukaryotic cells (cells with clearly defined nuclei) that is made up of a series of flattened, stacked pouches called cisternae. The Golgi … Webascus, plural asci, a saclike structure produced by fungi of the phylum Ascomycota (sac fungi) in which sexually produced spores (ascospores), usually four or eight in number, are formed. Asci may arise from the fungal mycelium (the filaments, or hyphae, constituting the organism) without a distinct fruiting structure, as in the leaf curl fungi; it may arise within … strip of path bordering a canal