The Facts on File Dictionary of Botany

... contin- uation of the central nerves of the LEMMAS or GLUMES. axenic culture A culture that consists of only one type of organism or cell, i.e. it is 23 Azotobacter The Facts On File DICTIONARY of BOTANY Bacillariophyta ... represented by the embryo sac, the archegonia being absent. The con- tents of the pollen grain represent the male gametophyte. The...

... works by reducing the strength of an antiserum on the basis of the type and amount of anti- gens present in the stain. Conversely, absorption-elution is based on the elution of antibodies that ... including the disks between vertebrae, the lens of the eye, and parts of the brain; forensic applications focus on the analysis of the aspartic acid in teet...

... group selection; kin selection. Alvarez theory The theory that the 7 Alvarez theory MASS EXTINCTION at the end of the Creta- ceous, including the complete extinction of the DINOSAURS, was caused ... evolution, the success of the sporophyte may be its possession of a diploid number of chromosomes coupled with its adaptation to life on land. The sporophyte generat...

... instead travel as vibrations along the bones to the inner ear, where they pass to the bony part of the cochlea. The vibrations of the bony cochlea pass to the endolymph, and the rest of the hearing process ... nasal bone is less than one half inch long. The ethmoid, vomer, and maxilla bones frame the back of the nose. Ridges in these bones, the nasal conchae,...

... rank among the handful of western stars who either worked exclusively in the genre or made their biggest contribution to the cinema in the “West- ern’s broad confines.” Add today the name of Clint ... Moon Over Montana, West of the Alamo, Song of the Sierras, Trail to Mexico (1946); Ridin’ Down the T rail, Song of the Wasteland, Six Gun Ser enade, Rainbow Over the...

... 64 Education 65 Environmental Health 66 Gerontology 67 Health and Medicine 67 Consumer Associations 67 Professional Associations 69 Human Rights 69 International/Regional Associations 69 Nongovernmental ... information about the organization, its professional education goals and publications, and abstracts and articles related to policy matters and research. Association for the Advancem...

... a common endpoint. The two rays are called the sides of the angle and their common endpoint is called the vertex of the angle. The interior of an angle is one of the two regions in the plane ... all the lines in a pencil of . base of a cone The flat planar region that is part of the surface of a finite cone. base of a polygon A side o...