• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Reference Guide to McEnroe`s Organic
Reference Guide to McEnroe`s Organic

... growth (can get 6” diameter and 3’ – 4’ in height.) To harvest cut edible buds at an immature stage (before they begin to open.) Once harvested remove all stems to allow for new stem growth from the base of the plant. IMPERIAL STAR • Most plants will bear more than one fruit, producing in the fall. ...
Captivating scents: fresh floral fœtid Scent trail
Captivating scents: fresh floral fœtid Scent trail

... heady Turkish delight/rose water scent, while others lean towards mint and citrus notes. Touch them to find out... ...
The Succulent Plant Page: Glossary of Botanical Terms
The Succulent Plant Page: Glossary of Botanical Terms

... Autotrophic - nutritionally independent of other organisms. Auxin - a group of plant hormones such as indole acetic acid, produced by the tips of growing shoots in plants, that regulate the amount, type, and direction of plant growth by stimulating elongation of cells rather than cell division. Auxi ...
A revision of Ledebouria (Hyacinthaceae) in South Africa
A revision of Ledebouria (Hyacinthaceae) in South Africa

... sary for Jessop (1970) to place a large contingent of species into Ledebouria Roth. This subdivision of Scilla saw the sinking of a number of valid species and result­ ed in some confusion in the taxonomy of Ledebouria. In his paper Jessop (1970) alerted readers that the lu m p ­ ing’ involved may h ...
Integration and Control - Academic Resources at Missouri Western
Integration and Control - Academic Resources at Missouri Western

... side away from the light. – “Auxin” (to increase, by Went) – Either • H.1: is destroyed on the lighted side • or • H.2: migrates to the dark side ...
Hollies for the Landscape
Hollies for the Landscape

... A Rutgers NJAES introduction - Red Beauty® is a new and distinct variety of evergreen holly distinguished in that it combines from three species (Ilex aquifolium, Ilex rugosa, and Ilex pernyi), and has desirable landscape and production traits which distinguish it from all other forms of Ilex. Leave ...
unit 2 plants
unit 2 plants

... As animals and human beings, plants are ______________.Plants ____________ their own food. They use their roots to take ______________ and minerals from the ...
The three main functions of stems are : a.)Conduction, asexual
The three main functions of stems are : a.)Conduction, asexual

... a).Herbaceous stems are always smaller than woody stems b).Woody stems have lateral meristems, herbaceous stems do not c).Only woody stems have axillary buds d).Woody stems have lenticels e).All of these choices Axillary buds are located a.)In the region between two successive nodes b.)In the upper ...
Carlson/Lapina
Carlson/Lapina

... Centaurea biebersteinii Tanacetum vulgare ...
1. Nursery operations and plantlet/seedling production
1. Nursery operations and plantlet/seedling production

... representatives during the meeting and follow-up activities of the Caribbean Herbs Business Forum Montego Bay, Jamaica, December 2002 (CARDI, 2009). During the deliberations at the technical sessions of this conference, it was generally agreed that a major constraint to the development of a regional ...
trees in winter - Гомельский государственный университет им. Ф
trees in winter - Гомельский государственный университет им. Ф

... winter. Winter seems, however, to catch some of them – such as young beeches and oaks – unawares. Their shriveled, brown leaves make them easy to spot in the winter. Maybe the surrounding trees provide better protection for them. After falling on the ground, leaves gradually rot or decompose. In a n ...
trees in winter - Гомельский государственный университет имени
trees in winter - Гомельский государственный университет имени

... winter. Winter seems, however, to catch some of them – such as young beeches and oaks – unawares. Their shriveled, brown leaves make them easy to spot in the winter. Maybe the surrounding trees provide better protection for them. After falling on the ground, leaves gradually rot or decompose. In a n ...
Alternaria diseases in production nurseries
Alternaria diseases in production nurseries

... can be found in most situations in the environment and are a natural part of the fungal flora almost everywhere. They are normal agents of decay and decomposition. Some species are plant pathogens that, collectively, cause a range of diseases with economic impact on a large variety of important agro ...
(3 June 2016) (Annexes 914-934)
(3 June 2016) (Annexes 914-934)

... thick at least at the base. Bristles may be mixed with hairs and grade into them. They are distinct from spines which are projection of the stem tissue and not epidermal structures. Scales. Scales are flat plates of epidermal tissue one cell thick and several to many cells wide. Although microscopic ...
RHS Past Paper R2101 (including examiners comments)
RHS Past Paper R2101 (including examiners comments)

... and generic names are often too vague and cannot be rewarded in the positive manner that genus, species and where appropriate, variety/cultivar can. This is particularly important when answering questions relating to particular (named) plant(s). Marks can only be awarded for these narratives where t ...
Nauheimer et al., Global history of the ancient monocot family
Nauheimer et al., Global history of the ancient monocot family

... venation pattern is a good match for that of Lysichiton (Figs 19–20) in having simple pinnate primary lateral veins that are connected with regular quadrangular meshes of transverse reticulate higher-order venation…” (p. 142) “Lasioideaecidites hessei and Lasioideaecidites bogneri, represents the ea ...
Invasive Plants In Your Backyard
Invasive Plants In Your Backyard

... While it prefers full sun and organic soil, it tolerates a wide range of conditions. Dense stands are found in swamps and marshes, on streambanks and lakeshores, in stormwater ponds and roadside ditches. ...
Maize Manual Diseases CIMMYT
Maize Manual Diseases CIMMYT

... necrotic lesions (Photo 20). They may appear first on lower leaves and increase in number as the plant develops, and can lead to complete burning of the foliage. Turcicum leaf blight (or northern leaf blight) occurs worldwide and particularly in areas where high humidity and moderate temperatures pr ...
Tree I.D.
Tree I.D.

... Tree Identification ...
Aster Production - Sakata Ornamentals
Aster Production - Sakata Ornamentals

... leads to improved germination. • Applying a more even and thicker layer of vermiculite improved germination and uniformity. ...
flower formation in brussels sprouts - Wageningen UR E
flower formation in brussels sprouts - Wageningen UR E

... petiole and the production of long strap-shaped leaves towards the top of the plant, which form an increasingly large angle with the stem (see fig. 9). These features are particularly noticeable after bolting (seefigs. 10 and 11).The strapshaped leaves are referred to as "generative" leaves and seem ...
Rachel Carson National Wildlife Refuge Early Detection
Rachel Carson National Wildlife Refuge Early Detection

... Japanese stiltgrass is a small (up to 15 cm tall), weak-stemmed grass that sprawls along the ground, with the growing tips pointing upwards. Leaves are 5-20 mm wide by 3-8cm long. Its lookalike whitegrass has smaller leaves that are about 3-8 mm wide by 5-10 mm long with scabrous edges that give the ...
Life Cycle of a Pumpkin
Life Cycle of a Pumpkin

... Pumpkin 1: A pumpkin is a fruit. We grow on a vine like other kinds of squash. Pumpkin 2: We can be bumpy or smooth, large or small, long or round. They can be orange, white, yellow, or red. Farmer: Each year there is a new crop of pumpkins. Their hard shells have deep lines that go from top to bott ...
DILLENIACEAE 1. TETRACERA Linnaeus, Sp. Pl. 1: 533. 1753.
DILLENIACEAE 1. TETRACERA Linnaeus, Sp. Pl. 1: 533. 1753.

... Trees, shrubs, or woody climbers, rarely herbs; hairs sclerified and/or silicified, sometimes fasciculate. Leaves simple, rarely pinnatisect or pinnately compound, usually spirally arranged, rarely opposite, petiolate; stipules absent; petiole sometimes winged; leaf blade leathery, herbaceous, or me ...
A comparative foliar epidermal and morphological study
A comparative foliar epidermal and morphological study

... of the leaf and presence of spines varies among the five species which indicates that despite the fact that these five plant species originated from a common ancestor, each species is of distinct genotype. The presence of spines on the stem of only Amaranthus spinosus is a divergence from the basic ...
< 1 ... 79 80 81 82 83 84 85 86 87 ... 316 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report