Five hundred million years ago‚ the invasion of land was under way. Why then? Astronomical numbers of photosynthetic cells had come and gone‚ and oxygen-producing types had changed the atmosphere. High above Earth‚ the sun’s energy had converted much of the oxygen into a dense ozone layer‚ a shield against lethal doses of ultraviolet radiation. Until then‚ life had not ventured above the surface of water and mud. Algae were evolving at the water’s edge‚ and one group – probably the charophytes
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CODE-Y NEET-UG – 2013 TEST PAPER WITH ANSWER (HELD ON SUNDAY 05th MAY‚ 2013) 1. The eye of octopus and eye of cat show different patterns of structure‚ yet they perform similar function. This is an example of : (1) Analogous organs that have evolved due to divergent evolution (2) Homologous organs that have evolved due to convergent evolution (3) Homologous organs that have evolved due to divergent evolution (4) Analogous organs that have evolved due to convergent evolution (4) Select the correct
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Biology exam review 2.1 Kingdom King Phylum Philip Class Came Order Over Genus Germany Species South Domain Bacteria Archea Eukarya Kingdom Eubacteria Archeabacteria Protista‚ Fungi‚ Plantae‚ Animalia. # of cells Prokaryote Prokaryote Eukaryote Cell structure Cell walls made of peptidolglycan (coat of sugars) Cell walls without peptidoglycan Fungi-cell walls with chitin. Protista-cell walls of cellulose in some‚ and in others chloroplasts. Plantae-cell walls
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A Survey of Eukaryotic Cells and Microorganisms HISTORY OF EUKARYOTES: 1. Evidence indicates that the first Eukaryotic cells first appeared on the earth approximately 2 billion years ago. Fossilized cells appear in shale sediments from China‚ Russia and Australia the date from 850-950 million years ago. 2. Biologists have discovered evidence to suggest that the eukaryotic cell evolved from prokaryotic organisms by a process of intracellular symbiosis. 3. Some of the organelles that
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Melinda soon arrives at the mall‚ which is just opening. Store managers hold keys and large cups of coffee‚ opening the cage-like gates in front of the stores. The mall lights turn on‚ the fountains start‚ and music turns on behind giant potted ferns. The air smells like fast food and floor cleaner. Seniors “powerwalk” by‚ taking no notice of the window displays in front of the shops. Melinda sits by the central elevator‚ where Santa’s Workshop
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a cedar log‚ resting absentmindedly plucking pieces from its thick layer of moss. It told us about about the geographical location also with the waterfall above the narrow bridge with the creek that flowed under it. The ground was a tangle of sword fern‚ salal‚ and Oregon grape. In a bit of an open space‚ an arbutus tree (that only grew on the west coast line) twisted towards the sun. Also with the location that had a land mass of rough black rock that turned into sixty feet of smooth slab. This tells
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grow angry with Mr. Edwards. When this occured‚ she would act sweet like nothing was wrong to prevent him from sensing it. The irony in this pasage stood out because it shows how an evil person can appear innocent. 3. "I remember the five-fingered ferns growing under little waterfalls...And I remember the smell of the hills... I remember the sweeping loveky dance of high buzzards... I remember holding the bite of a line....(279-280) The style in this passage made me read it many times over. The anaphora
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evidence such as: the occurrence of tillites (glacial deposits) of 286 million years ago (the Permo-Carboniferous) similar plants and animal fossils are found in them but not in the Northern Hemisphere‚ in particular the widely distributed seed fern Glossopteris The rocks that contain this evidence are called the Karoo (Karroo) System in South Africa‚ the Gondwana System in India‚ and the Santa Catharina System in South America. The official definition of ’Gondwanaland’ is found on the www.thefreedictionary
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abrupt move till they stood in a dimly lit clearing‚ the overhang so impenetrable that there were no shadows. Blackthorn stood in silence‚ his eyes could barely discern the outline of a small‚ narrow building peeking out from under clusters of tall ferns obviously thriving from the swampy terrain. Suddenly‚ he let out a gasp as the horror hit him. The building was strapped in chains. The next day the troops were called back. There was nothing to loot. Blackthorn knew‚ it was just a wasteland. Walking
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Jane Eyre can be described as a free soul. Her character is developed through her journey. Jane lives in five different places including Gateshead‚ Lowood‚ Thornsfield‚ Moorhouse‚ and Ferndean. Each place is very symbolic and every characteristic of the place contributes symbolically to Jane’s life. In Gateshead‚ Jane is being abused by Mrs. Reed and her three children .In Lowood‚ Jane finds friendship and she reinforces her character‚ in Thornfield she finds love and responsibility. In Moorhouse
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