Plant Diversity The Evolution of Seed Plants.docx

36 glucose glucose is a simple sugar with the

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36. Glucose: Glucose is a simple sugar with the molecular formula C₆H₁₂O₆, which means that it is a molecule that is made of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Glucose circulates in the blood of animals as blood sugar. It is made during photosynthesis from water and carbon dioxide, using energy from sunlight. It is the most important source of energy for cellular respiration. 37. Tea leaves: a dried leaf or shredded part of the dried leaf of the tea plant, used to make tea and or a tea leaf, or part of a leaf, after it has been infused 38. Coffee beans: a seed of the coffee plant and the source for coffee. It is the pit inside the red or purple fruit often referred to as a cherry. 39. Xylem tissue: A tissue in vascular plants that carries water and dissolved minerals up from the roots through the stem to the leaves and provides support for the softer tissues. Xylem consists of various elongated cells that function as tubes. 40. Phloem tissue: is the tissue in plants that transport food to the parts of the plant where it needs to go. An example of the phloem is the tissue in plants that distributes the sugar that plants eat. 41. Wood: a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic material, a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. ESSAY QUESTIONS (a) Discuss fully the process of plant photosynthesis and why the human welfare depends on plant products . a. Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants,
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Amber Holmes-Turner Plant Diversity: The Evolution of Seed Plants light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. b. 1) Plants emit oxygen, which humans take in. 2) Plants also provide humans the nutrients we need to live. 3) Certain plants are used for medicinal purposes. 4) At times plants are often used as a form of shelter. (b) Identify the products of seed plants. a. Examples of seed plants are numerous, and include but not limited to soybeans, oranges, raspberries, broccoli, prunes, corn, peaches, mangoes, celery, tangerines, kiwifruit, plums, pumpkins, beets, star fruit, all types of beans, carrots, asparagus, apples, crabapples, apples and more. (c) Draw and label the structure of a typical flower
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