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Key Concepts -- Lecture 9 (cycads, ginkgos, and gnetophytes) IB168
Key Concepts -- Lecture 9 (cycads, ginkgos, and gnetophytes) IB168

... 2. Seeds borne on megasporophylls (that is, on leaf homologues; unlike conifers, wherein seeds are borne on scales that each equate to a branch, rather than a leaf). - Generally, the megasporophylls are borne in seed cones at apex of upright stem (up to several cones produced during a reproductive p ...
plants – day 3
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... plants – one of these classes of plants are called angiosperms, and these plants produce flowers. Angiosperms can be further divided into 2 subclasses: Monocotyledoneae and the Dicotyledoneae, aka monocots and dicots Names of 2 subgroups are based on structure of their seeds ...
Kingdom Plantae - Bakersfield College
Kingdom Plantae - Bakersfield College

... Vascular plants con’t. 6. Two types of growth – apical meristem a. Primary growth b. Secondary growth 7. Sperm still flagellated 8. Maintained stomata & cuticle ...
Diseases of Roses - Pacific Northwest District
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... means of control • Good sanitation is a must! • Remove faded or blighted flowers, leaves, or entire plants if infected at the base • Discard in trash! Not in compost! • Fungus becomes quickly resistant, so alternate use of fungicides ...
Quercus stellata Post Oak - Environmental Horticulture
Quercus stellata Post Oak - Environmental Horticulture

... This 40 to 50-foot-tall deciduous tree creates a dense, rounded canopy of spreading, twisted branches, but is not cultivated in nurseries (Fig. 1). The four to six-inch-long by three to four-inch-wide, shiny, dark green leaves are deeply lobed and appear somewhat in the shape of a Maltese cross. Onl ...
Key Plant Key Pest of North Florida
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... to early spring ...
STUDY GUIDE FOR LAB EXAM I—Oct 17, 2003
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...  Consider all the groups of plants we studied and rang them in terms of who needs the most water to survive, the least water to survive, the most complex, the least complex, who has the least or no vascular tissue to the most developed vascular tissue, and relate presence of vascular tissue to size ...
Chapter 20 Plants Slide 1
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...  Usually the chief organs of photosynthesis  Broad and thin foliage leaves have a maximum surface area for the collection of solar energy and absorption of CO2.  Receive water from root system  Deciduous plants lose their leaves during a particular season (often for water conservation).  Evergr ...
WHAT IS THE PURPOSE OF A SEED LEAF?
WHAT IS THE PURPOSE OF A SEED LEAF?

... OF A SEED LEAF? Introduction Plants can reproduce in several ways depending on the species. Most of the best-known plants—like those that provide us with vegetables, trees, and flowers—grow from seeds. A seed is a reproductive structure that keeps the developing embryo inside a protective outer coat ...
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... — This describes the bottom (lower end) of the leaf blade or leaflet - closest to the stem ...
The Ferns - Science 10 With Mr. Francis
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... able to fix nitrogen in the air to be used by other plants • Landscaping, horticulture and the florist industry • Useful in removing heavy metals like arsenic from the soil • Decomposed ferns are a component of coal formation ...
Ch. 22
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... A. What is a Seed Plant? – Seeds are reduced sporophyte plants enclosed within a protective coat. The seeds may be surrounded by a fruit or carried naked on the scales of a cone. 1. Seed plants produce ____________– spores develop to produce male and female gametophytes a. _________ grain – male gam ...
View Poems Here - The Red Room Company
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... The Red Room Company’s vision is to make poetry a meaningful part of everyday life. We create poetic arts projects and learning programs in collaboration with a spectrum of poets, schools, communities and partners for positive social impact. Our mission is to make poetry accessible to all, especial ...
teacher resources: The Basics of Botany
teacher resources: The Basics of Botany

... The plant body can be divided into three main parts: roots, stems, and leaves. Some botanists refer to the latter two as “shoots”. Most students have a good understanding of what these look like, but the distinction between these can sometimes be fuzzy. ...
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... its name to its genus and family (Zingiberaceae). Other notable members of this plant family are turmeric, cardamom, and galangal. ...
8. TRACHYCARPUS H. Wendland, Bull. Soc. Bot. France 8: 429
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... Stem solitary, tall and aerial or rarely short and subterranean, usually covered with persistent, fibrous leaf sheaths, stems of older plants losing this covering, leaving a bare, ringed trunk. Leaves 6–25, palmate, usually forming a dense crown; leaf sheaths open, fibrous, old sheaths forming a mas ...
Roebelenii Palm
Roebelenii Palm

... amongst the foliage. They are held on short, 1 foot long inflorescences. Between September and October, fruit appears in clusters and ripen to a dark purple-ish black color. It is important to note that Roebeleniis have sharp leaf spines arranged near the base of the leaf stem. This palm does best i ...
Stachys arvense - Australian Weeds and Livestock
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... Toxicity to Other Species: Toxic to sheep, cattle and horses. ...
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Name Biology Chemistry of Life What can reduce the effect of a

... / allows light to pass through for photosynthesis; cohesion of water molecules allow transport in plants; solvent – chemical reactions take place in water; many substances dissolve in water and can be transported; high boiling point making liquid water available to organisms / water is liquid over a ...
16. Switchgrass - Friess Lake School District
16. Switchgrass - Friess Lake School District

... Switchgrass has green blade-like leaves. The texture is sharp, paper-like, and smooth. The leaves can have a reddish tint. In fall they can turn a yellowish color. They usually will be about a ½ inch wide and 13 in. tall. The blades hold the flower and the seeds. The leaves are simple, not compound. ...
Summary
Summary

... In addition, the expression profile was examined in pollen and leaves of mature plants, exposed to higher day temperatures. As controls, plants were exposed to optimal conditions (high night temperatures) or to non heating conditions during day or night. In contrast to the common opinion that pollen ...
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Transport, Food Storage and Gas Exchange in Flowering Plants

... Network of veins ...
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Chapter One Plants and How They Grow

... Plants make and let out oxygen gas when they make sugar Plants need energy from the Sun to change carbon dioxide and water into sugar and oxygen ...
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Read about the trees we have on the Estate

... Flowering Horse Chestnut, Baumanii, with large sticky brown buds forming into large green leaves and long lasting white flowers in spring. Suitable for avenues and larger gardens. Betula Utilis Jacuemontii Medium sized Silver Birch with distinctive white silvery bark and attractive small oval green ...
Seed Dispersal
Seed Dispersal

... and minerals from the roots  Phloem: carries food that is made in the leaf to the rest of the plants. ...
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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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