PPT-External Plant Plants

By C Kohn WUHS Based on Botany Basics a module by Oregon State Univ Plant Organs E xternal plant structures such as leaves stems roots flowers fruits and seeds are known as plant . How Plants Respond to External . Stimuli. Essential Standards. 6.L.. 2 Understand . the flow of . energy through . ecosystems and the responses of populations to . the biotic . and . abiotic. factors in their environment.. By C. Kohn, WUHS. Based on “Botany Basics”, a module by Oregon State Univ. . Plant Organs. E. xternal plant structures such as leaves, stems, roots, flowers, fruits, and seeds are known as plant . According to the acid growth hypothesis, what is the correct sequence in which the following events leading to . auxin. -induced cell elongation occur?. 1, 2, 3 d) . 3. , 2, 1. 1, 3, 2 e) . 3. , 1, 2. How Plants Respond to External . Stimuli. Essential Standards. 6.L.. 2 Understand . the flow of . energy through . ecosystems and the responses of populations to . the biotic . and . abiotic. factors in their environment.. Roots. , Stems, and Leaves. Reproduction . in Flowering . Plants. Plant . Characteristics. Plants come in all sizes, from the tiny duckweed which grows to only about 10 mm in length, to the giant redwood which grows to about 100 m in height.. Plant Hormones. Hormones are chemical signals that coordinate the various parts of an organism. A hormone is a compound produced in one part of the body which is then transported to other parts of the body, where it triggers responses in target cells and tissues. Overview: Stimuli and a Stationary Life. Plants, being rooted to the ground, must respond to environmental changes that come their way. For example, the bending of a seedling toward light begins with sensing the direction, quantity, and color of the light. Why should we care about plants, at all?. Carbon dioxide levels. Indicators for ground level pollution, long before animals. Japan/ radioactive food….. But… . Kudzu- invasive. Did you know……. Nonvascular plants. have no vessels, no roots, no stems or leaves. Examples: Mosses & Liverworts. Vascular Tissue. Xylem: transports water. Phloem: transports food & nutrients. Gymnosperms. "naked seeds". Plants…. Eukaryotic (have a nucleus). Have cell walls made of cellulose. Carry out photosynthesis using the pigment chlorophyll a and chlorophyll b. Belong to the kingdom Plantae. Types of plants. 1) Green Algae. FLORIDA PLANTS What is a native plant? Plants native to Florida are plants that were here before the arrival of the Europeans Plants native to this area of Florida have evolved mechanisms over the centuries that enable them to handle our climate. Chapter 26. Control of Plant Development. plant hormones. chemical messengers within organisms. each has a very specific function . auxins. promote growth at apical . meristems. cause growth in different directions. Organisms use feedback mechanisms to regulate growth and reproduction, and to maintain dynamic homeostasis.. Growth and dynamic homeostasis of a biological system are influenced by changes in the . system’s environment. . Organisms use feedback mechanisms to regulate growth and reproduction, and to maintain dynamic homeostasis.. Growth and dynamic homeostasis of a biological system are influenced by changes in the . system’s environment. .