Chapter 33-Plant Responses
... I. Groups of Hormones (transported via phloem) • Hormones are chemical messengers that affect a plant’s ability to respond to its environment (e.g., sunlight, gravity, water, nutrients, and temperature). • The effect of a hormone on a “target cell” is influenced by the hormone’s concentration and it ...
... I. Groups of Hormones (transported via phloem) • Hormones are chemical messengers that affect a plant’s ability to respond to its environment (e.g., sunlight, gravity, water, nutrients, and temperature). • The effect of a hormone on a “target cell” is influenced by the hormone’s concentration and it ...
Plants can respond to stimuli by “moving” stmu y mo ng
... Gravity exerts its effects by causing masses to settle. This means that plants must be able to detect the settling or falling of masses. Two models have been put forth to describe how plant cells sense gravity. 1) The starch-statolith hypothesis: Proposes that gravity is detected by specialized cell ...
... Gravity exerts its effects by causing masses to settle. This means that plants must be able to detect the settling or falling of masses. Two models have been put forth to describe how plant cells sense gravity. 1) The starch-statolith hypothesis: Proposes that gravity is detected by specialized cell ...
07 Gibberellins
... Effects: Apical dominance; tropic responses; vascular tissue differentiation; promotion of cambial activity; induction of adventitious roots on cuttings; inhibitions of leaf and fruit abscission; stimulation of ethylene synthesis; inhibition or promotion (in pineapples) of flowering; stimulation of ...
... Effects: Apical dominance; tropic responses; vascular tissue differentiation; promotion of cambial activity; induction of adventitious roots on cuttings; inhibitions of leaf and fruit abscission; stimulation of ethylene synthesis; inhibition or promotion (in pineapples) of flowering; stimulation of ...
Chapter Outline
... b. Application of a weak solution of auxin causes roots to develop from the ends of cuttings. c. Auxin production by seeds promotes growth of fruit. d. As long as auxin is concentrated in leaves and fruits rather than stem, they do not fall off. 2. Auxin-controlled cell elongation is involved in gra ...
... b. Application of a weak solution of auxin causes roots to develop from the ends of cuttings. c. Auxin production by seeds promotes growth of fruit. d. As long as auxin is concentrated in leaves and fruits rather than stem, they do not fall off. 2. Auxin-controlled cell elongation is involved in gra ...
Mader/Biology, 11/e – Chapter Outline
... 1. Apically produced auxin prevents the growth of axillary buds, a phenomenon called apical dominance. a. When a terminal bud is removed, the nearest buds begin to grow and the plant branches. b. Application of a weak solution of auxin causes roots to develop from the ends of cuttings. c. Auxin prod ...
... 1. Apically produced auxin prevents the growth of axillary buds, a phenomenon called apical dominance. a. When a terminal bud is removed, the nearest buds begin to grow and the plant branches. b. Application of a weak solution of auxin causes roots to develop from the ends of cuttings. c. Auxin prod ...
Photosynthesis
... Almost all communication on a plant is done by hormones Chemical signals produced in very low concentrations in one part of plants and then active in another part of the plant Hormones travel within phloem, or from cell to cell, in response to the appropriate stimulus Each hormone has a specific ...
... Almost all communication on a plant is done by hormones Chemical signals produced in very low concentrations in one part of plants and then active in another part of the plant Hormones travel within phloem, or from cell to cell, in response to the appropriate stimulus Each hormone has a specific ...
Chapter 10: Plant Reproduction, Growth, and Development
... Plant cells are totipotent, having all the genetic potential to become mature specialized plants. ...
... Plant cells are totipotent, having all the genetic potential to become mature specialized plants. ...
AP Review Part 3:
... – Endosperm nucleus divides to become endosperm tissue (seed development animation) ...
... – Endosperm nucleus divides to become endosperm tissue (seed development animation) ...
Hormone control of growth
... Where is the plant growth substance,called IAA, produced? In the shoot and root tip How does it affect the cells in these regions? IAA stimulates cell division ( mitosis ) IAA stimulates cell elongation by increasing the plasticity of the plant cell wall so the cell can take in more water IAA is nec ...
... Where is the plant growth substance,called IAA, produced? In the shoot and root tip How does it affect the cells in these regions? IAA stimulates cell division ( mitosis ) IAA stimulates cell elongation by increasing the plasticity of the plant cell wall so the cell can take in more water IAA is nec ...
Auxins
... Other plants are classified as long-day/short-night plants. In this case, the night must be shorter than some critical time. Some plants are day neutral and flowering is independent of photoperiod. Because of the importance of the dark period rather than the light ...
... Other plants are classified as long-day/short-night plants. In this case, the night must be shorter than some critical time. Some plants are day neutral and flowering is independent of photoperiod. Because of the importance of the dark period rather than the light ...
Chapter 5 Vocabulary- From Bacteria to Plants
... Section 2 Gymnosperm: a plant that produces seeds that are not enclosed by a protective covering (pg. 150) Cone: the reproductive structure of a gymnosperm (pg. 152) Pollen: tiny particles produced by plants that contain the microscopic cells that later become sperm cells (pg. 152) Ovule: a plant s ...
... Section 2 Gymnosperm: a plant that produces seeds that are not enclosed by a protective covering (pg. 150) Cone: the reproductive structure of a gymnosperm (pg. 152) Pollen: tiny particles produced by plants that contain the microscopic cells that later become sperm cells (pg. 152) Ovule: a plant s ...
File - Ms. Richards IB Biology HL
... • Maltose conversion- maltose is converted to glucose, which is either used in aerobic cell respiration as a source of energy, or is used to synthesize cellulose or other substances needed for growth • Photosynthesis kicks in as soon as the leaves of the seedling have reached light and have opened. ...
... • Maltose conversion- maltose is converted to glucose, which is either used in aerobic cell respiration as a source of energy, or is used to synthesize cellulose or other substances needed for growth • Photosynthesis kicks in as soon as the leaves of the seedling have reached light and have opened. ...
Seed Plant Notes
... • make true flowers • If it has broad leaves, flowers, & fruit, it is an angiosperm. ...
... • make true flowers • If it has broad leaves, flowers, & fruit, it is an angiosperm. ...
Role of Plant Growth Regulator in Horticulture Nursery
... Vascular Tissue Differentiation: It stimulates differentiation of phloem and xylem. ...
... Vascular Tissue Differentiation: It stimulates differentiation of phloem and xylem. ...
flowering plants
... Rhizomes – an under ground stem that produces new roots and upright stems at various points ...
... Rhizomes – an under ground stem that produces new roots and upright stems at various points ...
Chapter 2 - ENV Hort @ IRREC
... Epigenetic factors in development 1. Formation of specific structures such as stems, roots, leaves, and flowers roots leaves and flowers The basic growth, enlargement, and differentiation of specialized cells to produce the morphological and physiological variation that makes up the whole plant ...
... Epigenetic factors in development 1. Formation of specific structures such as stems, roots, leaves, and flowers roots leaves and flowers The basic growth, enlargement, and differentiation of specialized cells to produce the morphological and physiological variation that makes up the whole plant ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 Dept. No
... 6. The first stable compound produced in Calvin cycle is 3-phosphoglyceric Acid. 7. Photorespiration is called C3 Cycle. 8. Auxins are used as weed killers. 9. Vernalization shortens the vegetative period of the plants. 10. Seeds, that, wait for suitable environmental condition to germinate are said ...
... 6. The first stable compound produced in Calvin cycle is 3-phosphoglyceric Acid. 7. Photorespiration is called C3 Cycle. 8. Auxins are used as weed killers. 9. Vernalization shortens the vegetative period of the plants. 10. Seeds, that, wait for suitable environmental condition to germinate are said ...
Plant Growth Regulators
... 1926 Frits went:His experiments showed that something moved out of the Coleoptile tip into the agar. He called these substances as auxins (Greek to increase) 1 First discovered hormones 2 At least three major groups apparently promote the growth of plants (auxins, gibberellins, and cytokinins). Depe ...
... 1926 Frits went:His experiments showed that something moved out of the Coleoptile tip into the agar. He called these substances as auxins (Greek to increase) 1 First discovered hormones 2 At least three major groups apparently promote the growth of plants (auxins, gibberellins, and cytokinins). Depe ...
9.3 Plant Growth
... Done by insects, animals or wind Grasses are wind pollinated and often have small flowers – main cause of ...
... Done by insects, animals or wind Grasses are wind pollinated and often have small flowers – main cause of ...
plant circulation
... • These divide by mitosis to form haploid, multicellular gametophytes. • These form embryo sacs and pollen grains. ...
... • These divide by mitosis to form haploid, multicellular gametophytes. • These form embryo sacs and pollen grains. ...
Plant Adaptations
... A layer of actively dividing cells between xylem and phloem that is responsible for the secondary growth of stems and roots Secondary growth occurs after the first season and results in increase in thickness. ...
... A layer of actively dividing cells between xylem and phloem that is responsible for the secondary growth of stems and roots Secondary growth occurs after the first season and results in increase in thickness. ...
Auxin
Auxins (plural of auxin /ˈɔːksɨn/) are a class of plant hormones (or plant growth substances) with some morphogen-like characteristics. Auxins have a cardinal role in coordination of many growth and behavioral processes in the plant's life cycle and are essential for plant body development. Auxins and their role in plant growth were first described by the Dutch scientist Frits Warmolt Went. Kenneth V. Thimann isolated this phytohormone and determined its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.