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- 1From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)Bark is a protective, outer tissue that occurs on older stems and roots of woody coniferous and angiosperm plants. Bark is generally considered to occur on the outside of the tissue known as wood, or the water-conducting...
- 2From:The Gale Encyclopedia of Science (Vol. 1. 6th ed.)Botany is the study of plants. It is one of the major fields of biology, together with zoology (the study of animals) and microbiology (the study of bacteria and viruses). Specializations within the field of botany...
- 3From:The Gale Encyclopedia of Science (Vol. 3. 6th ed.)Germination is the process by which a seed begins its development into a mature plant. It begins with an increase of metabolic activity within the seed. The first visible sign of germination in angiosperms (flowering...
- 4From:The Gale Encyclopedia of Science (Vol. 4. 6th ed.)Hydroponics is the process of growing plants in a mixture of mineral nutrients and water; specifically without the use of any type of soil. The two major features of hydroponics are the use of liquid solutions for plant...
- 5From:The Gale Encyclopedia of Science (Vol. 3. 6th ed.)A fruit is an often-edible part of a plant that is derived from a fertilized, ripened ovary. As a dietary staple, fruits are appreciated for their sweetness and as a rich source of nutrients, especially vitamins....
- 6From:The Gale Encyclopedia of Science (Vol. 6. 6th ed.)Phototropism is the orientation of an organism in response to asymmetric illumination. Phototropism is commonly observed in the stems of higher plants, which bend toward a light source as they grow. Phototropism can be...
- 7From:The Gale Encyclopedia of Science (Vol. 2. 6th ed.)Composting is the process of arranging and manipulating organic wastes so that they are gradually broken down, or decomposed, by soil microorganisms and animals. The resulting product is a black, earthy-smelling,...
- 8From:The Gale Encyclopedia of Science (Vol. 3. 6th ed.)Geotropism is the term applied to the orientation response of growing plant parts to Earth's gravitational field. Roots are positively geotropic, that is, they will bend and grow downwards, towards the center of Earth....
- 9From:The Gale Encyclopedia of Science (Vol. 2. 6th ed.)According to Native American legends of the American Southwest, the Indian people have occupied four (or five) worlds since the creation of man, but that maize, or corn as Europeans came to call it, was already present...
- 10From:The Gale Encyclopedia of Science (Vol. 3. 6th ed.)A fertilizer is any substance applied to land to increase plant growth and produce higher crop yield. First discovered by ancient farmers, fertilizer technology has significantly improved as the chemical needs of growing...
- 11From:The Gale Encyclopedia of Science (Vol. 6. 6th ed.)A plant is an organism in the kingdom Plantae. According to the five-kingdom classification system used by most biologists, plants have the following characteristics: they are multicellular during part of their life;...