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Arthropods ( / ˈɑːrθrəpɒd / ARTH-rə-pod) [ 20] are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated ( metameric) segments, and paired jointed appendages. In order to keep growing, they must go through stages of moulting ...
Hydrilla ( waterthyme) is a genus of aquatic plant, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. It is native to the cool and warm waters of the Old World in Asia, Africa and Australia, with a sparse, scattered distribution; in Australia from Northern Territory ...
Avicennia is a genus of flowering plants currently placed in the bear's breeches family, Acanthaceae. It contains mangrove trees, which occur in the intertidal zones of estuarine areas and are characterized by its "pencil roots", which are aerial roots. They are also commonly known as api api, which in the Malay language means "fires", a ...
Labisia is a herbaceous plant that grows in low clusters, with solitary or rarely branching stems and fine, hairy roots. The leaves are oblong-shaped, hairy on its underside and can grow to 20–40 cm (7.9–15.7 in) in length. The inflorescence are brown and 5–6 cm (2.0–2.4 in) long. [ 4] The plant thrives under the shade, away from direct ...
Conifers are a group of cone-bearing seed plants, a subset of gymnosperms. Scientifically, they make up the division Pinophyta ( / pɪˈnɒfɪtə, ˈpaɪnoʊfaɪtə / ), also known as Coniferophyta ( / ˌkɒnɪfəˈrɒfɪtə, - oʊfaɪtə /) or Coniferae. The division contains a single extant class, Pinopsida.
Rafflesia titan Jack. Rafflesia arnoldii, the corpse flower, [2] or giant padma, [3] is a species of flowering plant in the parasitic genus Rafflesia. It is noted for producing the largest individual flower on Earth. [4] It has a strong and unpleasant odor of decaying flesh. [5] It is native to the rainforests of Sumatra and Borneo. [6]
Evolutionary history of plants. A late Silurian sporangium, artificially colored. Green: A spore tetrad. Blue: A spore bearing a trilete mark – the Y -shaped scar. The spores are about 30–35 μm across. The evolution of plants has resulted in a wide range of complexity, from the earliest algal mats of unicellular archaeplastids evolved ...
Air pressure actually decreases exponentially with altitude, dropping by half every 5.6 km (18,000 ft) or by a factor of 1/e (0.368) every 7.64 km (25,100 ft), (this is called the scale height) -- for altitudes out to around 70 km (43 mi; 230,000 ft). However, the atmosphere is more accurately modeled with a customized equation for each layer ...