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Life Sci - Chap 20

study guide

List the seven land biomes. Temperate Deciduous forest, coniferous forest, tropical rain forest, temperate grasslands, savanna, desert, tundra
What is a biome? large area characterized by its climate and the plants and animals that live there
Distinguish between abiotic and biotic factors. abiotic factors are nonliving factors of the environment (ex: rocks, soil, temperature); biotic factors are the living factors of the environment (ex: plants and animals)
What is the temperature and rainfall of a deciduous forest? Ave temps - 82 (summer), 43 (winter); rainfall - 30 to 50 inches per year
Explain the word deciduous. deciduous trees shed their leaves each winter to save water.
How many seasons are in a deciduous forest? 4 seasons
What is the temperature and rainfall of a coniferous forest? Ave temp: 57 (summer), 14 (winter); rainfall: 14 to 30 inches yearly
Explain the word coniferous. trees that produce seeds in cones - also called evergreen trees.
How many seasons are in a coniferous forest? 4 seasons
What is the temperature and rainfall of a tropical rain forest? Ave temp: 93 (daytime), 68 (nighttime); rainfall: 160 inches yearly
What is the main characteristic of a rainforest? (highest biological diversity in the world)
How many seasons are in a tropical rainforest? 2 seasons
List the two types of grasslands. temperate and savanna
Explain the differences between the two types of grasslands. Temperate - includes grasses and other flowering plants-found mostly in North Am and Russia; Savanna - grassland - scattered clumps of trees & very seasonal rain-found in Africa, India & South Am.
How many seasons are in a temperate grassland? 4 seasons
How many seasons are in a savanna? 2 seasons, wet season and dry season - dry season is more predominate
What is the temperature and rainfall of a temperate grassland? Ave temp: 86 (summer), 32 (winter); rainfall: 10 to 30 inches per year
What is the temperature and rainfall of a savanna? Ave temp: 93 (dry season) and 61 (wet season); rainfall - 39 inches
Define a desert. region that has little or no plant life, long periods without rain, and extreme temperature - usu found in hot climates
How many seasons are in a desert? 4 seasons - summer most predominant; (temperatures vary the most in this biome in a 24 hour period)
What is the temperature and rainfall of a desert? ave temp: 100 (summer), 45 (winter);rainfall - 10 inches or less
Explain the differences between a polar and alpine tundra. polar tundra is found near the N & S poles - it develops permafrost; alpine tundra also has permafrost but is found on the tops of tall mountains - it is above the tree line
Define the term permafrost? layer of soil beneath the surface soil that stays frozen all the time
Define the term tree line. it describes an elevation - it is the highest elevation that trees will grow at
The microscopic free-swimming organism in freshwater and marine. plankton (producer)
List the three abiotic factors that shape marine ecosystems. water temperature, water depth and amount of sunlight, salt content of water
Describe the four major ocean zones. intertidal, neritic, oceanic and benthic
Explain what intertidal areas are defined as. they are found near the shore; includes mudflats, sandy beaches and rocky shores - organisms that live in this area must be able to live in or out of water
Explain what the coral reefs are defined as. found in warm, shallow water (neritic zone) - it is living - small stationary animals
Explain what estuaries are defined as. where fresh and salt water meet and mix; swamps and marshes
Define what polar ice is. icy water that contains lots of nutrients (since it is frozen it is fresh water
What are the differences between a stream and river. streams are small, slower flowing - as more streams come together they join to form a river (a strong, wide stream)
Define the littoral zone of a pond or lake. shallow zone of a lake or pond where light reaches the bottom and nutures plants
Define an open-water zone of a pond or lake. sone of the pond or lake that extends from the littoral zone and that is only as deep as light can reach
Define deep-water zone of a pond or lake. zone of a lake or pond below the open-water zone, where no light reaches
Explain the ecosystem of a marsh. Contains fresh & salt water - grasses but no trees
Explain the ecosystem of a swamp. fresh & salt water - trees and shrubs grow there.
Created by: msparks