Plants Poisonous To Your Boxer Dogs

Photosynthesis ... Eventually, no later than a billion years ago, one of these protists formed a symbiotic relationship with a cyanobacterium, producing the ancestor of many plants and algae...

Phytochemistry ... Constituent elements The list of simple elements of which plants are primarily constructed—carbon, oxygen, hydrogen, calcium, phosphorus, etc.—is not different from similar lists for animals, fungi, or even bacteria... The fundamental atomic components of plants are the same as for all life; only the details of the way in which they are assembled differs...

Spermatophyte ... A middle Devonian precursor to seed plants from Belgium has been identified predating the earliest seed plants by about 20 million years... Runcaria has all of the qualities of seed plants except for a solid seed coat and a system to guide the pollen to the seed... Relationships and nomenclature Further information: Gnetophyta#Classification Seed-bearing plants were traditionally divided into angiosperms, or flowering plants, and gymnosperms, which includes the gnetophytes, cycads, ginkgo, and conifers...

Gardening ... Gardening ranges in scale from fruit orchards, to long boulevard plantings with one or more different types of shrubs, trees and herbaceous plants, to residential yards including lawns and foundation plantings, to plants in large or small containers grown inside or outside... Gardening may be very specialized, with only one type of plant grown, or involve a large number of different plants in mixed plantings...

Biological Dispersal ... Biological dispersal may be contrasted with geodispersal, which is the mixing of previously isolated populations (or whole biotas) following the erosion of geographic barriers to dispersal or gene flow (Lieberman, 2005; Albert and Reis, 2011). Types of dispersal At some time during its life, an organism, whether animal or plant, moves, or is moved, so that it or its offspring do not die exactly where they were born...

Lycopodiophyta ... Fossils ascribed to the Lycopodiophyta first appear in the Silurian period, along with a number of other vascular plants...

Hedge ... Many hedgerows separating fields from lanes in the United Kingdom, Ireland and the Low Countries are estimated to have been in existence for more than seven hundred years, originating in the medieval period. The root word of 'hedge' is much older: it appears in the Old English language, in German (Hecke), and Dutch (haag) to mean 'enclosure', as in the name of the Dutch city The Hague, or more formally 's Gravenhage, meaning The Count's hedge...

Medieval Gardening ... For the purposes of this article, the European medieval era will be considered to span from 400 to 1400 CE, though appropriate references may be made to earlier and later times. Gardening is the deliberate cultivation of plants herbs, fruits, flowers, or vegetables...

Pollination ... In spite of a common perception that pollen grains are gametes, like the sperm cells of animals, this is incorrect; pollination is a phase in the alternation of generations: each pollen grain is a male haploid plant, a gametophyte, adapted to being transported to the female gametophyte, where it can achieve fertilization by producing the male gamete (or gametes, in the process of double fertilization). As such the Angiosperm successful pollen grain (gametophyte) containing the male gametes (sperm) gets transported to the stigma, where it germinates and its pollen tube grows down the style to the ovary...

Plant ... Precise numbers are difficult to determine, but as of 2010, there are thought to be 300–315 thousand species of plants, of which the great majority, some 260–290 thousand, are seed plants (see the table below)... Definition Plants are one of the two groups into which all living things have been traditionally divided; the other is animals... The division goes back at least as far as Aristotle (384 BC – 322 BC) who distinguished between plants which generally do not move, and animals which often are mobile to catch their food...

Shrub ... Shrubs as a botanical structural form In botany and ecology a shrub is more specifically used to describe the particular physical structural or plant life-form of woody plants which are less than 8 metres (26 ft) high and usually have many stems arising at or near the base...

History Of Gardening ... After the emergence of the first civilizations, wealthy individuals began to create gardens for purely aesthetic purposes. Egyptian tomb paintings of the 1500s BC are some of the earliest physical evidence of ornamental horticulture and landscape design; they depict lotus ponds surrounded by symmetrical rows of acacias and palms...

French Formal Garden ... Following his campaign in Italy in 1495, where he saw the gardens and castles of Naples, King Charles VIII brought Italian craftsmen and garden designers, such as Pacello da Mercogliano, from Naples and ordered the construction of Italian-style gardens at his residence at the Chateau d'Amboise. His successor Henry II, who had also traveled to Italy and had met Leonardo DaVinci, created an Italian nearby at the Chateau de Blois...

Tree Worship ... The image of the Tree of life is also a favourite in many mythologies. Various forms of trees of life also appear in folklore, culture and fiction, often relating to immortality or fertility...

Species Distribution ... Biogeography is the study of the distribution of biodiversity over space and time. It is very useful in understanding species distribution through factors such as speciation, extinction, continental drift, glaciation, variation of sea levels, river capture and available resources...