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Chapter 17 and 18 Organization of a Vascular Plant Organization of
Chapter 17 and 18 Organization of a Vascular Plant Organization of

... - Most familiar of four gymnosperm phyla. - Seeds develop on scales within cones and are exposed at time of pollination. Cycadophyta (Cycads) Ginkgophyta (Ginkos) Gnetophyta (Gneetophytes) Rise of Angiosperms Comprise 90% of all living plants. ™ Use roots to anchor plants in one place to obtain nutr ...
Functions of Plant Parts
Functions of Plant Parts

... • Identify major internal structures, external structures, methods of locomotion, methods of reproduction and stages of development of plants: flower pistil style filament pollen fruit ovary anther roots stem leaves stomata xylem phloem transpiration node ...
Chapter 6: The Shoot System II: the Form and Structure of Leaves
Chapter 6: The Shoot System II: the Form and Structure of Leaves

... THE PETIOLE Dicot leaf blades are not directly attached to the stem. Instead, a petiole serves that purpose. The petiole is the narrow base of most dicot leaves. It functions to improve photosynthetic efficiency in several ways. By extending the leaf blade away from the stem, the petiole reduces the ...
Small Penstemons for Small Rock Gardens and Troughs
Small Penstemons for Small Rock Gardens and Troughs

... Kelaidis, Gwen. 1986. Bulletin of the American Penstemon Society 45(2): 44-46. (with minor editing) ...
DATE. OF OUT IS
DATE. OF OUT IS

... This is one of a series of Fact Sheets reporting Cooperative Extension work in agriculture and home economics, F. E. Price, director. Printed and distributed in furtherance of Acts of Congress of May 8 and June 30, 1914. Oregon State University, Oregon counties, and U. S. Department of Agriculture c ...
a list of the most invasive plants to keep out of your
a list of the most invasive plants to keep out of your

... Japanese knotweed, Polygonum cuspidatum This shrub-like herb grows up to 10 feet tall. Stems are smooth and the pointed leaves vary from broadly oval to almost triangular. Flowers are greenish-white and very small. The seeds are dispersed by wind. Once established, the plants spread by a system of u ...
PDF version
PDF version

... In a plant succession, the plants that immediately follow the pioneer community are the A. secondary succession B. seral stage C. climax stage Which cell division process is involved in vegetative reproduction? A. mitosis B. meiosis In some leaves, 3 or 5 major veins depart from a single point. This ...
NERINE BOWDENII - Garden Centers of Colorado
NERINE BOWDENII - Garden Centers of Colorado

... ...
Plant Anatomy and Life Processes Study Guide
Plant Anatomy and Life Processes Study Guide

... Spores are produced on the plant. When the spores are scattered on soil, they produce new plants. They DO NOT have flowers or seeds! ...
Topic 5: Seedless Vascular Plants (Ch. 29)
Topic 5: Seedless Vascular Plants (Ch. 29)

... conducting tissues (xylem and phloem) called vascular tissues ...
topic5 BIOL1030NR
topic5 BIOL1030NR

... conducting tissues (xylem and phloem) called vascular tissues ...
identification of injurious weeds
identification of injurious weeds

... pointing lobes at the base. Flowering is from late June onwards with the stems typically up to 100cm tall but sometimes reaching 150cm. The flowering stem is loosely branched with numerous clusters of small reddish-brown flowers which have more the appearance of seeds. The flowering stems die back a ...
Plant Regulation
Plant Regulation

... Regulation of Extracellular Fluid ...
Coastal habitats - Wild About Plants
Coastal habitats - Wild About Plants

... Sea Holly has spined, waxy grey-green leaves. It is the spiky leaves that give Sea Holly its common name although it is unrelated to the Holly tree. It is an evergreen plant and has blue flowers that are clustered in a flowerhead. ...
Homeostasis in Plants
Homeostasis in Plants

... Regulation of Extracellular Fluid ...
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Alstonia scholarisTi..

... Marketing: Mixed with other medicinal herbs sold on local market. An estimated export of 12-15 tonnes/year of dried bark is possible against a price of US$/kg 0.4-1.5. Market prospects: Little or not known. Propagation: Natural regeneration is often scarce; seedlings are found scattered in groups, p ...
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... Established groups of organism that depended upon structural or morphological similarities and differences. Basic taxonomic criteria for groupings were based on morphology of reproductive parts, parts least apt to be influenced by environment. However, his system was artificial and is not longer bei ...
Plant of the Week
Plant of the Week

... comes to life in winter, producing an abundance of crimson flowers at a time when few other plants are in flower. Look for Styphelia tubiflora on poor sandy soils, usually in heaths and dry sclerophyll Eucalyptus woodlands on sandstone ridges and hillsides. Although sometimes quite abundant, its dis ...
Complex Plants
Complex Plants

... 1. Pollen grains (from male cones) carried by wind 2. Female cones make a sticky secretion that traps pollen 3. Grain splits open, grows a pollen tube, which contains sperm 4. Pollen tube grows into the ovule, located in female cone 5. Sperm break out of the tube and fertilize egg in the ovule 6. Zy ...
Carnivorous Plants - Magnolia grandiFLORA
Carnivorous Plants - Magnolia grandiFLORA

... traps in its leaves? 2. How are pollinators different from the insects it traps in its leaves? Grades 6-8: 1. What are the basic things this plant needs to live and reproduce? How does it get each of these? 2. What place in the food web would this plant be? Grades 9-12: 1. Carnivory has evolved inde ...
Narrow pointed opposite leaves. Flowers are identifiable with their
Narrow pointed opposite leaves. Flowers are identifiable with their

... A large candelabra-shaped cactus that grows up to 7-8m in height and found mainly in arid areas. the arms are made of flutted and spiny cylindrical section that become woodier with age. The spines can be ...
Trees come in various shapes and sizes but all have the same basic
Trees come in various shapes and sizes but all have the same basic

... called chlorophyll, uses carbon dioxide and water to produce life-sustaining carbohydrates. The entire process is called photosynthesis. Leaves are also responsible for respiration and transpiration. A tree's leaf is one major marker that helps in keying out and identifying any species of tree. Most ...
Dame`s Rocket, Hesperis matronalis
Dame`s Rocket, Hesperis matronalis

... newly emerging plants. Important! If plants are pulled while in flower and left on the ground or composted, the seedpods can still ripen using energy in the stem and roots. It is Seedlings in spring. best if they are bagged for the landfill or burned. In large patches, or where removal is not possib ...
Plants
Plants

... oblong or linear sori away from leaf margins or continuous on underside of leaf blade (abaxially) Indusia present attached centrally relative to sorus or on 1 side of sorus Spores uniform in size, small; oblong to reniform in shape Gametophytes bisexual, aboveground, thin, green, photosynthetic ...
Deukmejian Wilderness Park
Deukmejian Wilderness Park

... nature hike in Deukmejian Park. The park’s new entrance is located at the top of Frederick, between Dunsmore and New York. This hike, although only about one-half mile, round trip, climbs about 350 feet. At least 90 minutes should be scheduled to allow the scouts to identify the plants. Credits: Muc ...
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Leaf



A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively.Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis. Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features. In most plant species, leaves are broad and flat. Such species are referred to as broad-leaved plants. Many gymnosperm species have thin needle-like leaves that can be advantageous in cold climates frequented by snow and frost. Leaves can also have other shapes and forms such as the scales in certain species of conifers. Some leaves are not above ground (such as bulb scales). Succulent plants often have thick juicy leaves, but some leaves are without major photosynthetic function and may be dead at maturity, as in some cataphylls, and spines). Furthermore, several kinds of leaf-like structures found in vascular plants are not totally homologous with them. Examples include flattened plant stems (called phylloclades and cladodes), and phyllodes (flattened leaf stems), both of which differ from leaves in their structure and origin. Many structures of non-vascular plants, and even of some lichens, which are not plants at all (in the sense of being members of the kingdom Plantae), look and function much like leaves. The primary site of photosynthesis in most leaves (palisade mesophyll) almost always occurs on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus palisade occurs on both sides and the leaves are said to be isobilateral.
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