tropisms - year13bio
... • The growth of part of a plant towards or away from an environmental stimulus. • If the growth is towards the stimulus, the tropism is said to be positive, if it is away from the stimulus it is said to be negative. • Tropisms are a directional response – the environmental stimulus comes from one di ...
... • The growth of part of a plant towards or away from an environmental stimulus. • If the growth is towards the stimulus, the tropism is said to be positive, if it is away from the stimulus it is said to be negative. • Tropisms are a directional response – the environmental stimulus comes from one di ...
Plant Responses to STRESS
... ● FLOWERING = the formation of reproductive organs ● May be initiated by: Plant reaching an appropriate age / size Particular time of year (sensed by the length of night)…photoreceptors involved! It is likely that a “flowering hormone” is sent from the leaves to where the flowers form ...
... ● FLOWERING = the formation of reproductive organs ● May be initiated by: Plant reaching an appropriate age / size Particular time of year (sensed by the length of night)…photoreceptors involved! It is likely that a “flowering hormone” is sent from the leaves to where the flowers form ...
Plant Responses to STRESS
... ● FLOWERING = the formation of reproductive organs ● May be initiated by: Plant reaching an appropriate age / size Particular time of year (sensed by the length of night)…photoreceptors involved! It is likely that a “flowering hormone” is sent from the leaves to where the flowers form ...
... ● FLOWERING = the formation of reproductive organs ● May be initiated by: Plant reaching an appropriate age / size Particular time of year (sensed by the length of night)…photoreceptors involved! It is likely that a “flowering hormone” is sent from the leaves to where the flowers form ...
Study notes plant reproduction
... Classify plants as monocotyledon or dicotyledon & distinguish between them. ...
... Classify plants as monocotyledon or dicotyledon & distinguish between them. ...
Chapter 24: Plant Reproduction and response
... soil to encourage root formation Use grafting - a piece of stem or a lateral bud is cut from the parent plant and attached to another plant ...
... soil to encourage root formation Use grafting - a piece of stem or a lateral bud is cut from the parent plant and attached to another plant ...
Plant Review KEY
... Anatomy of the Leaf: Read the following passage about the parts of a leaf. Color the cross section of the leaf. Answer the questions about the passage. The leaf is the primary photosynthetic organ of the plant. The outer surface of the leaf has a thin waxy covering called the cuticle (A), this laye ...
... Anatomy of the Leaf: Read the following passage about the parts of a leaf. Color the cross section of the leaf. Answer the questions about the passage. The leaf is the primary photosynthetic organ of the plant. The outer surface of the leaf has a thin waxy covering called the cuticle (A), this laye ...
7 - WordPress.com
... The stem gives support and structure for the plant. The stem houses the xylem and phloem which transports water and nutrients from the root to other parts of the plant. It also protects from the leaves. Angiosperms are a group of flowering plants that represent a major community in the plant kingdom ...
... The stem gives support and structure for the plant. The stem houses the xylem and phloem which transports water and nutrients from the root to other parts of the plant. It also protects from the leaves. Angiosperms are a group of flowering plants that represent a major community in the plant kingdom ...
Topic 9 - Plant Science IB Biology HL
... (most extant specimens small—some extinct species very large) • Most living plant species are in this group • Seeds contain an embryo, a supply of nutrients, and a protective outer coat • Have extensive vascular tissue and include some of the world’s largest and oldest organisms ...
... (most extant specimens small—some extinct species very large) • Most living plant species are in this group • Seeds contain an embryo, a supply of nutrients, and a protective outer coat • Have extensive vascular tissue and include some of the world’s largest and oldest organisms ...
Plants - TeacherWeb
... 1. Root hairs: increase surface area though which plants take in water and minerals from the soil 2. Epidermis: outermost layer 3. Cortex: stores food; carries water to the xylem 4. Root tip: tip of the root 5. Growth tissue: behind the root cap where new cells grow ...
... 1. Root hairs: increase surface area though which plants take in water and minerals from the soil 2. Epidermis: outermost layer 3. Cortex: stores food; carries water to the xylem 4. Root tip: tip of the root 5. Growth tissue: behind the root cap where new cells grow ...
LESSON 1 – What is a plant? • Know what chlorophyll is. o The
... Moss and liverworts are found in moist areas on rocks, tree trunks, and soil. Hornworts are found in moist soil mixed in with grass. ...
... Moss and liverworts are found in moist areas on rocks, tree trunks, and soil. Hornworts are found in moist soil mixed in with grass. ...
doc Summary 18 to 31, 2010
... o Only true for graviportal animals very large and heavy More or less vertical columns solid without marrow Made for supporting not running o In eursorial animals successive limb bones at an angle Subjected to multidirectional stress Hollow or marrow cavity Distal end compressive s ...
... o Only true for graviportal animals very large and heavy More or less vertical columns solid without marrow Made for supporting not running o In eursorial animals successive limb bones at an angle Subjected to multidirectional stress Hollow or marrow cavity Distal end compressive s ...
Pollination - 549online.org
... The ABC model proposes that three organ identity gene classes specify the four whorls 1. Class A genes alone – Sepals 2. Class A and B genes together – Petals 3. Class B and C genes together – Stamens 4. Class C genes alone – Carpels When any one class is missing, aberrant floral organs occur in pre ...
... The ABC model proposes that three organ identity gene classes specify the four whorls 1. Class A genes alone – Sepals 2. Class A and B genes together – Petals 3. Class B and C genes together – Stamens 4. Class C genes alone – Carpels When any one class is missing, aberrant floral organs occur in pre ...
to view the PowerPoint Presentation on Plant Growth Regulators
... of many fruits. Synthesis of ethylene is inhibited by carbon dioxide and requires oxygen. ...
... of many fruits. Synthesis of ethylene is inhibited by carbon dioxide and requires oxygen. ...
plant growth regulators
... of many fruits. Synthesis of ethylene is inhibited by carbon dioxide and requires oxygen. ...
... of many fruits. Synthesis of ethylene is inhibited by carbon dioxide and requires oxygen. ...
Plant behaviour
... If plant FACES light, it is a POSITIVE phototropism. If it turns away from the light, it is a NEGATIVE phototropism ...
... If plant FACES light, it is a POSITIVE phototropism. If it turns away from the light, it is a NEGATIVE phototropism ...
Plant Reproduction
... 5. Parts of the ovule develop into the seed coat and store food for the embryo. a. Some seeds store food in cotyledons. b. Other seeds store food in endosperm tissue. D. Seeds are dispersed by wind, gravity, animals, and water. 1. Germination occurs when the seed coat swells and breaks open and a pl ...
... 5. Parts of the ovule develop into the seed coat and store food for the embryo. a. Some seeds store food in cotyledons. b. Other seeds store food in endosperm tissue. D. Seeds are dispersed by wind, gravity, animals, and water. 1. Germination occurs when the seed coat swells and breaks open and a pl ...
Chapter 5 TISSUES AND THE PRIMARY GROWTH OF STEMS
... In the primary plant body, parenchyma cells occur in the pith, cortex, leaf mesophyll and in the flesh of fruits. They are found in the xylem and phloem of small veins and in the leaf traces of the nodes, the placenta, endosperm and other reproductive structures, in glandular tissues (nectaries, sal ...
... In the primary plant body, parenchyma cells occur in the pith, cortex, leaf mesophyll and in the flesh of fruits. They are found in the xylem and phloem of small veins and in the leaf traces of the nodes, the placenta, endosperm and other reproductive structures, in glandular tissues (nectaries, sal ...
2. …………………... are found in plant cell.
... Meristematic tissues are group of cells, which have the ability to divide. This tissue consists of small, cubodial densely packed cells, which keeps on dividing to form new cells. These tissues are capable of stretching, enlarging and differentiate into other types of tissues as they mature. Meriste ...
... Meristematic tissues are group of cells, which have the ability to divide. This tissue consists of small, cubodial densely packed cells, which keeps on dividing to form new cells. These tissues are capable of stretching, enlarging and differentiate into other types of tissues as they mature. Meriste ...
Honeysuckle Coral Vine
... Outstanding plant: plant has outstanding ornamental features and could be planted more Invasive potential: aggressive, spreading plant Pest resistance: no serious pests are normally seen on the plant Use and Management Trumpet Honeysuckle tolerates most soils except dry sands. As with many vines, so ...
... Outstanding plant: plant has outstanding ornamental features and could be planted more Invasive potential: aggressive, spreading plant Pest resistance: no serious pests are normally seen on the plant Use and Management Trumpet Honeysuckle tolerates most soils except dry sands. As with many vines, so ...
Gibberellins
... Sakai, Miho, Tomoaki Sakamoto, Tomino Saito, Makoto Matsuoko, Hiroshi Tanaka, and Masatomo Kobayashi. "Expression of Novel Rice Gibberellin 2-oxidase Gene Is under Homeostatic." SHORT COMMUNICATION(2003): 161-64. ProQuest. Web. Apr.-May 2014. ...
... Sakai, Miho, Tomoaki Sakamoto, Tomino Saito, Makoto Matsuoko, Hiroshi Tanaka, and Masatomo Kobayashi. "Expression of Novel Rice Gibberellin 2-oxidase Gene Is under Homeostatic." SHORT COMMUNICATION(2003): 161-64. ProQuest. Web. Apr.-May 2014. ...
Plant Growth - Havelock Agricultural Education
... • The process by which food and nutrients are moved within a plant from one plant part to another. • Water and minerals move from the roots up to the leaves and food moves from the leaves down to the roots. ...
... • The process by which food and nutrients are moved within a plant from one plant part to another. • Water and minerals move from the roots up to the leaves and food moves from the leaves down to the roots. ...
Plants 5: Shoreline
... http://images.google.com/imgres?imgurl=http://www.plantidentification.co.uk/images/gramineae/phalaris-arundinacea1.jpg&imgrefurl=http:// ...
... http://images.google.com/imgres?imgurl=http://www.plantidentification.co.uk/images/gramineae/phalaris-arundinacea1.jpg&imgrefurl=http:// ...
Chapter 35 Presentation-Plant Structure and Growth
... •These are shorter and run perpendicular to the stem/root axis. •These consist of parenchyma cells and provide a way for H2O and nutrients to flow between secondary xylem and secondary phloem. ...
... •These are shorter and run perpendicular to the stem/root axis. •These consist of parenchyma cells and provide a way for H2O and nutrients to flow between secondary xylem and secondary phloem. ...
Meristem
A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place.Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem (SAM) gives rise to organs like the leaves and flowers, while the root apical meristem (RAM) provides the meristematic cells for the future root growth. SAM and RAM cells divide rapidly and are considered indeterminate, in that they do not possess any defined end status. In that sense, the meristematic cells are frequently compared to the stem cells in animals, which have an analogous behavior and function.The term meristem was first used in 1858 by Karl Wilhelm von Nägeli (1817–1891) in his book Beiträge zur Wissenschaftlichen Botanik. It is derived from the Greek word merizein (μερίζειν), meaning to divide, in recognition of its inherent function.In general, differentiated plant cells cannot divide or produce cells of a different type. Therefore, cell division in the meristem is required to provide new cells for expansion and differentiation of tissues and initiation of new organs, providing the basic structure of the plant body.Meristematic cells are incompletely or not at all differentiated, and are capable of continued cellular division (youthful). Furthermore, the cells are small and protoplasm fills the cell completely. The vacuoles are extremely small. The cytoplasm does not contain differentiated plastids (chloroplasts or chromoplasts), although they are present in rudimentary form (proplastids). Meristematic cells are packed closely together without intercellular cavities. The cell wall is a very thin primary cell wall.Maintenance of the cells requires a balance between two antagonistic processes: organ initiation and stem cell population renewal.Apical meristems are the completely undifferentiated (indeterminate) meristems in a plant. These differentiate into three kinds of primary meristems. The primary meristems in turn produce the two secondary meristem types. These secondary meristems are also known as lateral meristems because they are involved in lateral growth.At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. Cells of this zone have a stem cell function and are essential for meristem maintenance. The proliferation and growth rates at the meristem summit usually differ considerably from those at the periphery.Meristems also are induced in the roots of legumes such as soybean, Lotus japonicus, pea, and Medicago truncatula after infection with soil bacteria commonly called Rhizobium. Cells of the inner or outer cortex in the so-called ""window of nodulation"" just behind the developing root tip are induced to divide. The critical signal substance is the lipo-oligosaccharide Nod-factor, decorated with side groups to allow specificity of interaction. The Nod factor receptor proteins NFR1 and NFR5 were cloned from several legumes including Lotus japonicus, Medicago truncatula and soybean (Glycine max). Regulation of nodule meristems utilizes long distance regulation commonly called ""Autoregulation of Nodulation"" (AON). This process involves a leaf-vascular tissue located LRR receptor kinases (LjHAR1, GmNARK and MtSUNN), CLE peptide signalling, and KAPP interaction, similar to that seen in the CLV1,2,3 system. LjKLAVIER also exhibits a nodule regulation phenotype though it is not yet known how this relates to the other AON receptor kinases.