Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Arctic Tundra Biome
Ecology Exam 3
| Question | Answer |
|---|---|
| Permafrost | below the soil, permanently frozen layer of ice. Active layer (above perma) only way animals can survive b/c melts during the summer |
| Why don't trees grow in the Tundra? | because of the permafrost- trees can't get established because no root space since frozen- impenetrable |
| Dominant Plants in Tundra? | Sedges (grasslike plants), Grasses, and Lichens (crustlike organism that are both fungus and algae) |
| What kind of Trees are seen in the Tundra? | Gallery Forest- trees that grow along streams (not much permafrost)- act. small (pine trees) b/c Arctic Tundra very severe winters (high wind, ice blasting) |
| Why receive 2 months of darkness and light? | Depending on the season- due to earth's tilt on axis- angle sun hits earth is so slight doesn't warm up tundra. People that live here have sleeping problems- use special lamps |
| Number of Plant species? | 1700 species- roots have to be fairly shallow b/c of permafrost. Dominant by Lichens, mosses, shrubs, and grasses |
| Tundra means? | Treeless |
| Adaptation of Dryas flowers to attract insects | like a parabolic oven, orient towards sun- capture rays- builds up heat- uses that heat to attract insects which land on it to get warm- pick up pollen |
| Arctic Animal Adaptations | Migration, Hibernation, Bergman, Allen's rules, Cryptic coloration, Insulation, Artery/vein positioning |
| Bergman's Rule | as go from equator (warm/moist) to Arctic- the species w/i the environmental gradient gets larger (approach sphere shape- good to preserve heat- least surface area exposed) as go to Arctic Tundra |
| Allen's Rule | as go from Tropic to Arctic- become shorter appendages (ears, nose, legs)- gives less exposure to cold environment- large body, short legs, noses, ears |
| Counter Current Adaptation | positioning of arteries and veins- process of warming blood between vein and artery- prevents body from becoming too cold. |
| Adaptation of Musk Ox | uses insulation to beat the cold, grows layers of fur, one short, one long. The short layer of fur traps air then warms it with body heat- warm trapped air= insultation of the Ox. Has thick hooves- break ice, and drink water found underneath the ice |
| Adaptation of Arctic Hare | Hares are white, which camou them from predators. Have powerful legs and strong claws to help them get food. Use strong legs to thump the ice and break open. Huddle together 100-300 mem in the winter to stay warm. |
Created by:
Jahazania
Popular Biology sets