Search results
Results from the WOW.Com Content Network
Elodea is a genus of eight species of aquatic plants often called the waterweeds described as a genus in 1803. Classified in the frog's-bit family ( Hydrocharitaceae ), Elodea is native to the Americas [ 1 ] and is also widely used as aquarium vegetation and laboratory demonstrations of cellular activities.
Elodea densa flower. Elodea densa is an aquatic plant growing in water up to 4 m (13 ft) deep, with trailing stems to 2 m (6.6 ft) or more long, producing roots at intervals along the stem. The leaves are produced in whorls of four to eight, 1–4 cm (0.39–1.57 in) long and 2–5 mm (0.079–0.197 in) broad, with a pointed leaf tip.
Elodea bifoliata, commonly called twoleaf waterweed, is a species of perennial flowering plant in the waterweed genus, Elodea. It grows in much of the western United States and Canada. It was only recognized as a separate species in the 1960s. It is found growing in streams and shallow bodies of water.
Elodea canadensis (American waterweed or Canadian waterweed or pondweed) is a perennial aquatic plant, or submergent macrophyte, native to most of North America. [ 3 ] [ 4 ] [ 5 ] It has been introduced widely to regions outside its native range and was first recorded from the British Isles in about 1836.
Ocular micrometer Micrometer Eyepiece. An ocular micrometer or eyepiece micrometer is a glass disk, engraved with a ruled scale, that fits in an eyepiece of a microscope, [1] [2] which is used to measure the size of microscopic objects through magnification under a microscope.
In light microscopy, a water immersion objective is a specially designed objective lens used to increase the resolution of the microscope. This is achieved by immersing both the lens and the specimen in water which has a higher refractive index than air, thereby increasing the numerical aperture of the objective lens.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Elodea nuttallii is a species of waterweed known by the common name western waterweed or Nuttall's waterweed. [3] This is a perennial aquatic plant which is native to North America where it grows submersed in lakes, rivers, and other shallow water bodies.