Download e-book for iPad: Encyclopedia of Biology by Don Rittner, Timothy Lee McCabe PH.D.

By Don Rittner, Timothy Lee McCabe PH.D.

Encyclopedia of Biology is a definitive reference that gives present, authoritative details at the topic for prime college and school scholars. The encyclopedia comprises nearly 800 A-to-Z entries, 9 prose essays on very important themes, eighty line illustrations, and seventy five black-and-white pictures. accomplished insurance of major discoveries in biology in addition to common biology definitions, thought-provoking essays, and biographies of awesome biologists current a variety of necessary info compiled right into a unmarried resource. Written in an easy-to-understand layout, the e-book is helping clarify the significance of biology to society, and contains summaries of extraordinary occasions all through heritage on the topic of the self-discipline. An emphasis on ''hot'' issues mixed with precise assurance of the elemental concerns, figures, principles and ideas, experiments, and historical past of biology make the encyclopedia present and appropriate to pupil pursuits. The publication courses readers to the most recent web content and most modern assets on the web that relate to biology. Appendixes contain all Nobel Prize winners in biology, a overview of biology-related software program, and the total Periodic desk of parts.

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It prevents a backflow of blood when the ventricles contract. atrium (plural, atria) An upper chamber that receives blood from the veins returning to the vertebrate heart and then pushes the blood to the ventricles, the lower chambers. There is a left and right atrium. Oxygenated blood returns from the lungs into the left atrium and gets pushed down to the left ventricle. The left ventricle pumps the blood out to the rest of the body, transporting the oxygen to parts of the body that need it. Blood returning from its voyage through the body arrives in the right atrium.

The pollen grains with male gametes form inside the anther. It is the pollen that fertilizes the ovules. The anther is the primary male reproductive structure at the apex of the flower’s stamen, the male sexual organ. See also STAMEN. pedicel antheridium The multicellular male sex organ or A schematic of a typical angiosperm flower. embryo, and a second fertilization event produces endosperm, a polyploid embryo-nourishing tissue found only in the angiosperms. Seeds are dispersed through a variety of forms such as fruits, follicles, capsules, berries, drupes, samaras, nuts, and achenes.

They also lack an endoplasmic reticulum (important for protein synthesis) and golgi apparatus (important for glycosy- acts as a warning to experienced predators. The larvae of the monarch butterfly and Phymateus morbillosus, a foaming grasshopper from South Africa, are two examples. The warning coloration alerts the predator, who may have eaten a similar-looking animal and was sickened by it, to avoid it. This also helps those species that mimic others in appearance, such as the viceroy butterfly and the monarch butterfly.

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