HoMe PaGe

Plant

Loading...

Wiki info

An algal scum formed on the land 1,200 million years ago, but it was not until the Ordovician Period, around 450 million years ago, that land plants appeared. However, new evidence from the study of carbon isotope ratios in Precambrian rocks has suggested that complex photosynthetic plants developed on the earth over 1000 m. y. a. For more than a century it has been assumed that the ancestors of land plants evolved in aquatic environments and then adapted to a life on land, an idea usually credited to botanist Frederick Orpen Bower in his 1908 book "The Origin of a Land Flora". A recent alternative view, supported by genetic evidence, is that they evolved from terrestrial single-celled algae, and that even the common ancestor of red and green algae, and the unicellular freshwater algae glaucophytes, originated in a terrestrial environment in freshwater biofilms or microbial mats. Primitive land plants began to diversify in the late Silurian Period, around 420 million years ago, and the results of their diversification are displayed in remarkable detail in an early Devonian fossil assemblage from the Rhynie chert. This chert preserved early plants in cellular detail, petrified in volcanic springs. By the middle of the Devonian Period most of the features recognised in plants today are present, including roots, leaves and secondary wood, and by late Devonian times seeds had evolved. Late Devonian plants had thereby reached a degree of sophistication that allowed them to form forests of tall trees. Evolutionary innovation continued in the Carboniferous and later geological periods and is ongoing today. Most plant groups were relatively unscathed by the Permo-Triassic extinction event, although the structures of communities changed. This may have set the scene for the evolution of flowering plants in the Triassic (~200 million years ago), which exploded in the Cretaceous and Tertiary. The latest major group of plants to evolve were the grasses, which became important in the mid Tertiary, from around 40 million years ago. The grasses, as well as many other groups, evolved new mechanisms of metabolism to survive the low CO2 and warm, dry conditions of the tropics over the last 10 million years.

Use our keyword tool to find new keywords & suggestions for the search term Plant. Use the keywords and images as guidance and inspiration for your articles, blog posts or advertising campaigns with various online compaines. The results we show for the keyword Plant will change over time as new keyword trends develop in the associated keyword catoegory and market. For optimum results we recommend just searching for one keyword.

A-Z Keywords

Keyword Suggestions

Interesting pages

Linked Keywords

Keyword Images

Article: The Intelligent Plant – awkward botany
Article: The Intellige...
Sprouting Plant Advocates | Laura Grace Weldon
Sprouting Plant Advoca...
Delosperma echinatum (Pickle Plant) | World of Succulents
Delosperma echinatum (...
Cyanea (plant) - Wikipedia
Cyanea (plant) - Wikip...
Calea (plant) - Wikipedia
Calea (plant) - Wikipe...
Passerina (plant) - Wikipedia
Passerina (plant) - Wi...
Quiz | New York Flora Association Blog
Quiz | New York Flora ...
Scorpiurus (plant) - Wikipedia
Scorpiurus (plant) - W...
What Is A Woad Plant – How To Grow Woad Plant In The Garden
What Is A Woad Plant ...
Prairie Rose's Garden: Wildflower Wednesday: Holiday ...
Prairie Rose's Gar...
foliage plants | smallhomegardens2012
foliage plants | small...
Lunaria rediviva - Wikipedia
Lunaria rediviva - Wik...
Dieffenbachia Picta Plant 3D Model .max .obj .fbx .c4d ...
Dieffenbachia Picta Pl...
Zenobia (plant) - Simple English Wikipedia, the free ...
Zenobia (plant) - Simp...
How glow-in-the-dark jellyfish revolutionised plant biology
How glow-in-the-dark j...
301 Moved Permanently
301 Moved Permanently ...
Calpurnia (plant) - Wikipedia
Calpurnia (plant) - Wi...
Five bulbs to plant in February | gardenersworld.com
Five bulbs to plant in...
Corybas (plant) - Wikipedia
Corybas (plant) - Wiki...
Yacon Apple of the Earth - Smallanthus sonchifolius
Yacon Apple of the Ear...
MY PLANT FINDER | Plant Guide: Serissa foetida
MY PLANT FINDER | Plan...
PlantPostings: Plant of the month: Hellebore
PlantPostings: Plant o...
Photo Library | Proven Winners
Photo Library | Proven...
Exotic 23" ZZ Silk Plant for the Distinctive Home and ...
Exotic 23" ZZ Sil...
600w 8 Plant Perpetual Harvest System (Closet) - Grow ...
600w 8 Plant Perpetual...
Parasitic plants - search in pictures
Parasitic plants - sea...
Small Glaze Faux Plant | Kmart
Small Glaze Faux Plant...
Parts of a Plant | Functions of Plant Parts | DK Find Out
Parts of a Plant | Fun...
Wild Senna | The Natural Web
Wild Senna | The Natur...
Bloodroot Flowers, plant associations, and other pleasures ...
Bloodroot Flowers, pla...
Showing items 1 to 249 of 17 Free Creative Commons ...
Showing items 1 to 249...
Erythronium - Wikipedia
Erythronium - Wikipedi...
Photo 1612-02: Ashwagandha plant (Withania somnifera ...
Photo 1612-02: Ashwaga...
welcome to:: Plants We Love- Double Orange Shrimp Plant
welcome to:: Plants We...
Goldilocks - Creeping Jenny - Lysimachia nummularia Images ...
Goldilocks - Creeping ...
Correa (plant) - Wikipedia
Correa (plant) - Wikip...
Tristania (plant) - Wikipedia
Tristania (plant) - Wi...
Crassula sarmentosa 'Comet' - Variegated Trailing Jade ...
Crassula sarmentosa &#...
My Little Potted Garden: How I Plant Sprouted Onions
My Little Potted Garde...
bixa orellana | Madang - Ples Bilong Mi
bixa orellana | Madang...
Zee-Zee Plant/Eternity Plant Indoor/Outdoor Shade Lover ...
Zee-Zee Plant/Eternity...
Excelsa Gardens, Inc. | plantANT.com
Excelsa Gardens, Inc. ...
Alocasia Micholitziana {Araceae} Elephant's Ear Plant
Alocasia Micholitziana...
Rhombophyllum dolabriforme - Elkhorn Plant | World of ...
Rhombophyllum dolabrif...
Euphorbia bupleurifolia (Pine Cone Plant) | World of ...
Euphorbia bupleurifoli...
Sizzling Indian Recipes.....: Images and video of female ...
Sizzling Indian Recipe...
Mystery plant 024 | Identify that Plant
Mystery plant 024 | Id...
Plant Answers
Plant Answers
Free Images : flower, produce, botany, pointed, back light ...
Free Images : flower, ...
EduPic Flower Images
EduPic Flower Images
Autograph Plant | An autograph plant (which shows marks ...
Autograph Plant | An a...
hanging pitcher plant | Drew Mackie | Flickr
hanging pitcher plant ...
Kartuz Greenhouses: Codonanthe devosiana
Kartuz Greenhouses: Co...
Osmorhiza claytonii (Sweet Cicely): Minnesota Wildflowers
Osmorhiza claytonii (S...
Coca-Cola Mini PET plant Bottle Mexico 200 ML AUG 2010 ...
Coca-Cola Mini PET pla...
Medicinal Plants-Dandelion
Medicinal Plants-Dande...
Castanopsis indica Images - Useful Tropical Plants
Castanopsis indica Ima...
Azara microphylla 'Variegata' | Variegated Boxleaf Azara ...
Azara microphylla 'Var...
Arcuate bush mallow | Flower of the arcuate bush mallow ...
Arcuate bush mallow | ...
Nepenthes jacquelineae
Nepenthes jacquelineae
Aglaonema modestum 廣東萬年青
Aglaonema modestum 廣...
长寿花(1)
长寿花(1)
油茶
油茶
芋頭
芋頭