Which Biome?
has 4 distinct seasons
rich soil
deciduous forest
lichens, anemones, turtles, crabs
ocean
The biggest factor in determining what kind of biome exists in an area is its climate.
True
List the seven biomes of the world.
tundra, coniferous forests, deciduous forests, rain forests, grasslands, deserts, and oceans
A plant that does not grow in the deciduous forest is
a a palm tree. c an elm tree.
b a maple tree. d a wildflower
A
gets up to 1000cm of rain
at least half of earth's species
rain forest
bison, giraffe, prairie dogs
grassland
Organisms live in any biome they want to.
False. The region’s climate—the temperature, humidity, wind speed, cloud cover, and precipitation—variations in sunlight, Earth’s rotation and revolution, distance from an ocean, and the elevation of the land all determine where an organism will live.
Explain why some species are endangered or extinct.
Habitat destruction, poaching and overhunting, pollution, the introduction of exotic species, and the collection of wild animals for pets cause many species to become endangered or become extinct.
A plant that does not grow in the tropical rain forest is
a an orchid. c a banana tree.
b a pine tree. d a coffee bush.
B
hot summers, cold winters
dust storms casued by overgrazing
prairies, pampas, steppes, savanna
grassland
reindeer, moose, lynx
squirrels, raccoons, opossums
coniferous forest
deciduous forest
Humans have no control over when an organism goes extinct.
More desert animals are active at night than during the day.
False. Humans can practice conservation by recycling, reducing pollution, and limiting the amount of habitat destroyed to help stop the rapid rate of extinction for many organisms.
True
List three things that can be done to help prevent the extinction of species.
Possible answers: eliminate poaching and overhunting; reduce pollution; avoid introducing exotic species to habitats; reduce the use of pesticides, harmful farming practices, and deforestation that destroy habitats
The biome that covers the largest area is
a the ocean. c the grasslands.
b the tundra. d the desert.
A
gets 25cm or less of rain
nocturnal animals
is increasing because of overgrazing
hot days and cold nights
desert
An animal that does not live in the tundra is
a a mosquito. c a snake.
b a caribou. d an Arctic tern.
An animal that does not live in the grasslands is
a an ostrich. c an elephant.
b a giraffe. d a penguin.
C
D
All ocean organisms are the same.
False. There are three types of organisms in the ocean. Plankton are microscopic organisms that live near the surface of the water in the photic zone. Nekton are the free-swimming animals such as sharks, whales, and sea turtles. Benthos are the organisms that live on or in the ocean floor. Examples are anemones, star fish, and kelp.
Choose four land biomes and identify the limiting factors.
Possible answers:
tundra—cold temperatures most of the year, short growing season, little sunlight part of the year, permafrost, little precipitation;
coniferous forests—cold weather, lack of rain, short growing season, trees block sunlight, pine needles on the forest floor inhibit seed germination;
deciduous forests—changing seasons mean many animals must store food for winter or hibernate; r
ain forests—canopy prevents most of the sunlight from reaching the forest floor, poor soil; grasslands— extreme temperatures and wind;
deserts—extreme heat, very dry
the ocean zone where photosynthesis can occur
the first ocean zone away from the shoreline
the zone that extends from the edge of the continental shelf and covers the entire open ocean
photic zone
neritic zone
oceanic zone
permafrost
10 months of frost
24hours of sunlight in summer
tundra
An animal that does not live in the desert is
a a gila monster. c a monkey.
b a scorpion. d a lizard.
C
Most ocean plants live at great depths, with their roots in the bottom of the ocean.
The four ocean zones are the photic, intertidal, neritic, and estuaries.
False. Most ocean plants live in the top 30 m of the ocean, where sunlight allows photosynthesis to take place
False. Estuaries are the transition areas between rivers and oceans. The oceanic zone is the fourth zone.
Choose four biomes and explain their basic characteristics.
Possible answers:
tundra—dry, cold climate, wet soil with few nutrients, short growing season;
coniferous forests—cold and snowy with frost about six months of the year, little rain, poor and acidic soil, conifers;
deciduous forests—temperate climate, four seasons, nutrient-rich soil, deciduous trees;
rain forests—stable temperatures, high annual rainfall, poor soil, greatest biodiversity;
grasslands—flat, rolling hills, moderate rain, changing seasons, plants with extensive root systems, few trees, grazing animal herds;
deserts—less than 25 cm of rain, hot day and cold night temperatures, sandy soil, few plants;
oceans—saltwater, tides, stable temperature, differing amounts of sunlight and water pressure, diverse organisms
European grasslands
African grasslands scattered with trees and shrubs
North American grasslands
steppes
savanna
prairie