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The number of currently known, described and accepted plant species is ca 374,000, of which approximately 295,00 (79%) are angiosperms. Almost 90% of this huge number of flowering plants is pollinated by animals (mostly insects) via nectar-mediated interactions. Notably, three-fourths of the leading global crop plants produce nectar and are animal pollinated, which is estimated to account for one-third of human food resources. Nectar can also be produced on tissues outside of flowers, by so-called extrafloral nectaries, and commonly mediate interactions with ‘body-guard’ ants and other pugnacious insects that defend the plant from herbivores. Extrafloral nectar is present in almost 4,000...
Nectar is the most important reward offered by plants to pollinating animals. This book is a modern and interdisciplinary text on nectar and nectaries, prompted by the expansion of knowledge in ecological and molecular fields, and the strong recent interest in pollination biology. The topics covered vary widely: they include historical aspects, the structure and ultrastructure of nectaries and relationships to plant systematics, the dynamics of nectar secretion, nectar chemistry and the molecular biology of defence proteins, and more.
The Congressional Record is the official record of the proceedings and debates of the United States Congress. It is published daily when Congress is in session. The Congressional Record began publication in 1873. Debates for sessions prior to 1873 are recorded in The Debates and Proceedings in the Congress of the United States (1789-1824), the Register of Debates in Congress (1824-1837), and the Congressional Globe (1833-1873)
Written by carefully selected global experts, practicing physicians, and educators in the various sub-disciplines of biochemistry, Medical Biochemistry, 6th Edition, offers a unique combination of research and clinical practice tailored to today's integrated courses. Covering clinically relevant topics in greater detail than other texts, this outstanding resource provides a strong overview of traditional areas in medical biochemistry along with state-of-the-art coverage of today’s latest developments. You’ll learn basic science concepts alongside clinical cases that describe patients likely to be encountered in clinical training, as well as how to use laboratory tests to diagnose and mon...
Frederick Herzog's focus on the praxis context of the church is right on target. He makes a much needed contribution to the critical development of liberation theologies in the North American situation."" --Letty M. Russell Yale University Divinity School I am particularly grateful for the clear articulation in the book of a number of concerns emerging in Third World theology, such as the recognition of poverty as a political and not a natural phenomenon, the shift from elite-universals to peoples' universals, the emphasis on Christopraxis as the key to orthodoxy, the interpretation of theology as praxis seeking understanding, and the emphasis on the sacraments of Baptism and the Lord's Supp...