Question: Are Sempervivum and Sagittaria both aquatic plants?
Context: Aquatic plants are used to give the aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.  Some aquarium fish and invertebrates also eat live plants.  Hobby aquarists use aquatic plants for aquascaping. Aquatic plants are used to give the aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.  Some aquarium fish and invertebrates also eat live plants.  Hobby aquarists use aquatic plants for aquascaping. William Tricker (1852–1916) was an English-born estate gardener.  He trained at Kew Gardens in London, before emigrating to the United States in the later 19th century.  His interest was in aquatic plants, and he began a company, named William Tricker, that specialized in aquatic plants.  The company sent out its first mail order catalog in 1892, and is still operating, as William Tricker, Inc. based in Independence, Ohio.  The company currently displays Tricker's original catalog.  Being a plantsman, he wrote many articles for the publication "Garden and Forest" in the 1890s dealing with aquatic plants.  He is well known for producing many hybrid water lilies that are still known around the world.  He introduced a water lily with 6-feet pads from South America, which he named "Victoria trickeri", although it is now known as "Victoria cruziana".  He died in 1916, after which his son, Charles Tricker, took over the business. Endothall or 3,6-endoxohexahydrophthalic acid is used as an herbicide for both terrestrial and aquatic plants.  It is used as an aquatic herbicide for submerged aquatic plants and algae in lakes, ponds and irrigation canals.  It is used as a desiccant on potatoes, hops, cotton, clover and alfalfa.  It is used as a biocide to control mollusks and algae in cooling towers. Hygrophila, commonly known as swampweeds, is a genus of flowering plants in the acanthus family, Acanthaceae.  There are about 80 to 100 species, of which many are aquatic plants.  The genus is distributed across the tropical and subtropical world.  It is one of only two genera in its family that contains aquatic plants, the other being "Justicia".  The genus is treated in the tribe "Hygrophileae", which is noted as being in need of revision at the genus level, meaning the current taxonomic boundaries of "Hygrophila" are likely to change in the future. Sagittaria secundifolia (Kral's water plantain, Little River arrowhead) is an aquatic plant, growing on or below the water, on rocky creek beds and nearby slopes.  It is found only along the Little River of Alabama, and is endangered.  It is often found in association with azaleas ("Rhododendron" spp), mountain laurel ("Kalmia") and holly ("Ilex").  Perennial, aquatic herb with an underwater, thick horizontal root about 5–10 centimeters (2–4 in) long and 6 millimeters (0.25 in) thick.  This particular species grows in the cracks in stream beds.  Each leaf arches upward and is 5–10 centimeters (2–4 in) long with a pointed tip.  "Sagittaria secundifolia" is found in the Little River drainage in DeKalb and Cherokee counties, the Town Creek drainage in DeKalb County, and in the West Sipsey Fork in Winston County in Alabama.  . Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater).  They are also referred to as hydrophytes or macrophytes.  These plants require special adaptations for living submerged in water, or at the water's surface.  The most common adaptation is aerenchyma, but floating leaves and finely dissected leaves are also common.  Aquatic plants can only grow in water or in soil that is permanently saturated with water.  They are therefore a common component of wetlands. Sempervivum (Brit.  , U.S. sem-per-VEE-vum) is a genus of about 40 species of flowering plants in the Crassulaceae family, commonly known as houseleeks.  Other common names include liveforever (the source of the taxonomical designation "Sempervivum", literally "always/forever alive") and hen and chicks, a name shared with plants of other genera as well.  They are succulent perennials forming mats composed of tufted leaves in rosettes.  In favourable conditions they spread rapidly via offsets, and several species are valued in cultivation as groundcover for dry, sunny locations. Aquatic plants are used to give the freshwater aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.  Some aquarium fish and invertebrates also eat live plants.  Hobbyists use aquatic plants for aquascaping, of several aesthetic styles. Sagittaria is a genus of about 30 species of aquatic plants whose members go by a variety of common names, including arrowhead, duck potato, katniss, "Omodaka" (沢瀉 in Japanese), swamp potato, tule potato, and wapato (or wapatoo).  Most are native to South, Central, and North America, but there are also some from Europe, Africa, and Asia.
Answer: no