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Ginkgo is a tree. Often misspelled Ginko
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∙ 15y ago
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What is the clases of gymnosprem?
The three main classes of gymnosperms that I was mainly taught are Conifers, Cycads, and Ginkos. I've also heard Gnetophytes (Gnetales) included in there too sometimes.
What would you see if you went to the Jurassic period in time?
you would see... 1.dinosaurs 2.archaeopteryx(first known bird) 3.cycados, cycads, conifiers, ginkos, and gymnosperms
What is the difference in an angiosperm and a gymnosperm?
Definitions:sperm: seedgymno- : nakedangio- : vesselSo, gymnosperms produce naked seeds whereas angiosperms produce enclosed seeds.Gymnosperms include the cycads, conifers and ginkos - all other plants are angiosperms.Extra CreditThe Gymnosperms evolved first, before there were any land animals, seed dispersal was geophysical (e.g. wind, water, rolling down a hill) - when animals colonised the land plants evolved more complex ways of dispersing their seeds, enclosing them in burred shells, fleshy fruit, etc.
What did the earth look like during the Permian period?
During the Permian, all the Earth's major land masses except portions of East Asia were collected into a single supercontinent known as Panjacket. Panjacket straddled the equator and extended toward the poles, with a corresponding effect on ocean currents in the single great ocean ("Panthalassa", the "universal sea"), and the Paleo-Tethys Ocean, a large ocean that was between Asia and Gondwana. The Climmeria continent rifed away from Gondwana and drifted north to Laurasia, causing the Paleo-Tethys to shrink. A new ocean was growing on its southern end, the Tethys Ocean, an ocean that would dominate much of the Mesozoic Era. Large continental landmasses create climates with extreme variations of heat and cold ("contiental climate") and monsoon conditions with highly seasonal rainfall patterns. Deserts seem to have been widespread on Pangaea. Such dry conditions favored gymnosperms, plants with seeds enclosed in a protective cover, over plants such as ferns that disperse spores. The first modern trees (conifers, ginkos, and cycads) appeared in the Permian. Three general areas are especially noted for their Permian deposits- the Ural Mountains (where Perm itself is located), China, and the southwest of North America, where the Permian Basin in the U.S. state of Texas is so named because it has one of the thickest deposits of Permian rocks in the world.
What are the three main groups of plants?
Vascular plants are broken down into three groups:1) In seedless vascular plants (ferns, horsetails and clubmosses) the sporophyte\ (diploid) dominates and is separate from the gametophyte. The gametophyte makes sperm that travel in water to reach the egg. A new plant results.2) Naked seed vascular plants (conifers, cycads, ginkos) are also called gymnosperms. Gymnosperm seeds are not completely covered by the parent plant when they are formed. They are inside dangling cones. Here are some of their traits:a. In conifers (pine, spruce, fir, redwoods and cedars) the tree is the sporophyte generation (diploid).b. The gametophyte generation is too small to see.c. Males and female cones have haploid spores. Male cones release pollen in the spring, which is spread by the wind. Some reach female cones, which release a sticky fluid that traps the blowing pollen. The pollen, over time, will burrow into the female cone's ovule to reach and fertilize the egg. Eventually the cone will fall and in the right conditions grow into a conifer tree.3) Protected seed vascular plants (flowering plants, grasses and deciduous trees) are also called angiosperms. Their seeds are protected inside a fruit. The flower grows to attract pollinators and house the ovule with eggs inside. It also holds the sperm that will be released as pollen.
What is the differences between coniferous and deciduos trees?
They both give us oxygen, provide us with jobs and materials (e.g. paper, lumber), photosynthesize etc.
What are some giant reptiles that lived during the Mesozoic era?
In the water: many of the same types of animals we see today in the waters (though not the same species): fish, shellfish, corals, etc. On land: archosaurs (reptile ancestors of dinosaurs), synapsid reptiles (reptile ancestors of mammals), lizards, crocodiles, and eventually dinosaurs, pterosaurs and mammals.Plant life included cycads, ferns, ginkos and conifers. (There were no deciduous trees, grass, or flowering plants.)
