• 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
1. Most important plant families
1. Most important plant families

... If you know the family, you know characters of hundreds and thousand of genera and species, you may even predict them There are 250,000 species of flowering plants and only 350 families; knowing family will significantly reduce efforts In science, everything is constantly changing, but plant familie ...
Native Plants for Desert Tortoises
Native Plants for Desert Tortoises

... usually aggressive plants and can be your best choices for planting in the enclosure. Due to their fast growth and adaptability, they can take a lot of abuse from a hungry tortoise. The two primary seasons for annuals are spring and summer. Spring annuals do most of their growing in late winter thro ...
GENES IN MAIZE FOR POLLEN STERILITY Studies of a
GENES IN MAIZE FOR POLLEN STERILITY Studies of a

... Warty anther plants usually exsert very few anthers and shed little or no pollen. The anthers are very much shriveled except in certain regions which develop normally. The anthers have a very characteristic appearance (figure 7). Very few of the anthers dehisce. However if the tip of the anther is w ...
Phytochemical and Nutritive Quality of Dried
Phytochemical and Nutritive Quality of Dried

... hypoglycemic (Sindhu, 2009). According to WHO report, 80% of the world population are taking interest in indigenous herbal medicines usually being seed in form of fruits, vegetables, drugs or their extracts for the treatment of diseases and for maintenance of health (Sahito et al, 2003). The results ...
Plant Morphological Terms
Plant Morphological Terms

... rhizome - a horizontal, underground stem, generally with short internodes and scale-like leaves; term also used for horizontal stems of ferns that are at ground level tuber - a thick, underground storage stem, usually not upright, typically bearing outer buds and lacking surrounding storage leaves o ...
Functional Aspects of the Origin and Subsequent Evolution of
Functional Aspects of the Origin and Subsequent Evolution of

... ne­tic position of glossopterids inferred from all previous mor­pho­logical cladistic analyses. Most importantly, there is no direct evidence of a haustorial role for the cotyledons at germination, because they were epigeal and remains of seed coat or endosperm were not documented in this fossil. Ho ...
Florida 4-H Horticulture Identification and Judging
Florida 4-H Horticulture Identification and Judging

... shape, color and type. Each group within a class will have the same number of specimens. When grading, first visualize the ideal specimen. Then consider all departures from this based on the above criteria and common sense. Factors that affect usefulness are downgraded more than other factors. For e ...
THE MACHAIR FLORA FEBRUARY
THE MACHAIR FLORA FEBRUARY

... Lesser Celandine (Ficaria verna) is One of the first flowers to raise its head in the late winter is this hairless perennial plant. With its shiny, narrow yellow 8-12 petalled flowers (20-30mm across), it blooms in woods, by rivers, in hedge-banks and roadsides between February and May. From a carpe ...
Common Yukon Roadside Flowers
Common Yukon Roadside Flowers

... and creams. One local brewery even makes a special ale with it. However, Fireweed was not the first choice for the flower of the territory. At the urging of Martha Louise Black, an avid flower lover and well-respected resident of the time, Yukon adopted the Prairie Crocus (Pulsatilla patens) as its ...
Of PAMPs and Effectors: The Blurred PTI-ETI
Of PAMPs and Effectors: The Blurred PTI-ETI

... between PAMPs and effectors cannot be maintained. CBEL is a cell wall glycoprotein PAMP that was identified in Phytophthora parasitica var nicotianae, the causal agent of tobacco Black Shank disease, which occurs widely in the genus Phytophthora (Mateos et al., 1997; Khatib et al., 2004). CBEL induc ...
Triticum aestivum L. emend. Fiori et Paol.
Triticum aestivum L. emend. Fiori et Paol.

... and, therefore, also includes smell, taste and touch. Visual observation includes observations where the expert uses reference points (e.g. diagrams, example varieties, side-by-side comparison) or nonlinear charts (e.g. color charts). Measurement (M) is an objective observation against a calibrated, ...
Origins and Traits of Vascular Plants
Origins and Traits of Vascular Plants

... – Such as a cuticle and secondary compounds, evolved in many plant species ...
TERMINALIA  BELLIRICA  Research Article  A. K. MEENA
TERMINALIA  BELLIRICA  Research Article  A. K. MEENA

... and heavy metal analysis of the fruits of    Terminalia bellirica Roxb.  for identification of the drug in dry form and control the adulterants.    Terminalia  bellirica  Roxb.  is  large  tree,  upto  40  m  high.    Leaves  petiolate,  broadly  elliptic,  clustered  towards  the  end  of  branches ...
Na+ Tolerance and Na+ Transport in Higher Plants
Na+ Tolerance and Na+ Transport in Higher Plants

... responses to salinity, and the dif®culty in making generalizations about plant responses to elevated salinity. These issues are addressed further below. In addition to comparative physiological studies, techniques exploiting the ability to manipulate levels of expression of genes are starting to pro ...
Heracleum mantegazzianum - SE-EPPC
Heracleum mantegazzianum - SE-EPPC

... herb in the carrot family growing to 15’ tall, with a taproot or fibrous roots. Stems hollow, 2-4” in diameter, with dark reddish-purple blotches and bristles. Leaves compound, deeply lobed, with three leaflets, up to 5’ wide. Inflorescence a flat-topped umbel, up to 2.5’ across with numerous small ...
Document
Document

... 1% seed transmission occurred (Grogan & Kendrick, 1953). Spread of the disease in the field or under glass is favoured by water (rainsplash, irrigation) and cultural practices (trimming, chemical sprays). The bacterium enters plant tissue through stomata and other natural openings, as well as wounds ...
13 noxious weeds
13 noxious weeds

... Maintain a specific garden or yard area and ensure that this species does not escape from the confined area. Clean equipment that has been used in infested areas. Remove seedlings when young - newly established plants can usually be pulled without leaving root fragments in the ground. Re-plant distu ...
the ethnobotany of bolboschoenus maritimus (cyperaceae) - TUBA-AR
the ethnobotany of bolboschoenus maritimus (cyperaceae) - TUBA-AR

... itimus show very similar taxonomical character- harvesting tool by Hillman (Hillman 2000). He observed reed harvesting in Adakale as well in istics, except that the latter includes bulbs. 1970's.6 At Qatalhoyiik, eight pairs of wild goat Therefore, it has not been determined yet homcores placed on t ...
Remediation of Heavy Metal Contaminated Soils
Remediation of Heavy Metal Contaminated Soils

... of fascinating scientific discoveries have allowed the development of this idea into an emerging technology, phytoremediation, which uses plants and their associated rhizospheric microorganisms to remove, degrade, or immobilize various contaminants from polluted soils, but also from sediments, groun ...
Plants of the Butterfly Garden (part 1)
Plants of the Butterfly Garden (part 1)

... Native to the Central and South America, this species of lantana (also commonly called shrub verbena) is an upright frost-tender shrub that grows 3-6’ tall. Generally treated as an annual in our area. It has escaped gardens throughout the world and is considered to be a noxious weed in many frost-fr ...
The evolution of water transport in plants: an integrated
The evolution of water transport in plants: an integrated

... fragile structures such as leaves from the rest of the plant body, thereby obscuring relationships between various tissue samples and potentially inflating species numbers. For instance, it was not until the discovery of an intact specimen bearing both wood and foliage that Archaeopteris was treated ...
Turfgrass Maintenance Essential Elements
Turfgrass Maintenance Essential Elements

... genetic information. Phosphorus is found in plant cell membranes and DNA. The role of P in turfgrass rooting is well-documented. Phosphorus is relatively immobile in most soils and is less likely to move into soil solution and leach than N-containing nitrate. Seedling plants, with limited root syste ...
Chapter 12
Chapter 12

... • Leaf Adaptations Some leaves have functions other than photosynthesis. •The leaves of many cactuses are modified as spines. These spines keep animals from eating the cactuses. • The leaves of sundews are modified to catch insects, which the sundew digests. ...
phylogeny/classification of the families of vascular plants of north
phylogeny/classification of the families of vascular plants of north

... DD APPENDIX THREE ...
“HPTLC METHOD DEVELOPMENT OF EXTRACT OF LEAVES OF
“HPTLC METHOD DEVELOPMENT OF EXTRACT OF LEAVES OF

... hilly areas of Chittagong Hill Tracts, Sylhet and throughout Bangladesh. Cassia sophera Linn. is a shrub or under shrub (2.9-3.0 m) annual or perennial and it is an important medicinal plant and considered to have expectorant properties. The bark in the form of infusion and the powdered seeds, mixed ...
< 1 ... 45 46 47 48 49 50 51 52 53 ... 347 >

History of botany



The history of botany examines the human effort to understand life on Earth by tracing the historical development of the discipline of botany—that part of natural science dealing with organisms traditionally treated as plants.Rudimentary botanical science began with empirically-based plant lore passed from generation to generation in the oral traditions of paleolithic hunter-gatherers. The first written records of plants were made in the Neolithic Revolution about 10,000 years ago as writing was developed in the settled agricultural communities where plants and animals were first domesticated. The first writings that show human curiosity about plants themselves, rather than the uses that could be made of them, appears in the teachings of Aristotle's student Theophrastus at the Lyceum in ancient Athens in about 350 BC; this is considered the starting point for modern botany. In Europe, this early botanical science was soon overshadowed by a medieval preoccupation with the medicinal properties of plants that lasted more than 1000 years. During this time, the medicinal works of classical antiquity were reproduced in manuscripts and books called herbals. In China and the Arab world, the Greco-Roman work on medicinal plants was preserved and extended.In Europe the Renaissance of the 14th–17th centuries heralded a scientific revival during which botany gradually emerged from natural history as an independent science, distinct from medicine and agriculture. Herbals were replaced by floras: books that described the native plants of local regions. The invention of the microscope stimulated the study of plant anatomy, and the first carefully designed experiments in plant physiology were performed. With the expansion of trade and exploration beyond Europe, the many new plants being discovered were subjected to an increasingly rigorous process of naming, description, and classification.Progressively more sophisticated scientific technology has aided the development of contemporary botanical offshoots in the plant sciences, ranging from the applied fields of economic botany (notably agriculture, horticulture and forestry), to the detailed examination of the structure and function of plants and their interaction with the environment over many scales from the large-scale global significance of vegetation and plant communities (biogeography and ecology) through to the small scale of subjects like cell theory, molecular biology and plant biochemistry.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report