Science Quizlet

A symbiotic relationship in which one species benefits and the other is not affected is called

Commensalism

Both owls and snakes preying on mice in a forest is an example of

Competition

Ecological succession can begin when seeds are carried to bare areas by birds or the wind. True False

True

Water is a product of cellular respiration. True False

True

Compare and contrast a community and an ecosystem.

A community and an ecosystem are similar because both involve more than one species. They differ because an ecosystem includes nonliving things.

Describe the water cycle

1. Evaporation: water evaporates from the surface of land and bodies of water 2. Transpiration: loss of water vapour from plants directly into the atmosphere 3. Respiration: loss of water vapour from animals directly into the atmosphere 4. Condensation: it rises into the air and condenses to form clouds 5. Precipitation: water droplets in clouds get heavier and fall as rain, snow or hail

Compare and contrast a population and a community.

A population refers to a group of interbreeding individuals of the same species, isolated from other groups, while a community refers to a group or association of populations of two or more different species occupying the same geographical area and in a particular time.

Which of the following steps in the nitrogen cycle takes place after animals eat plants? A)Decaying waste returns nitrogen to the soil. B)Bacteria on plant roots fix nitrogen to make it usable. C)Plants use nitrogen from the soil. D)Lightning changes nitrogen gas into nitrogen compounds.

A)Decaying waste returns nitrogen to the soil.

As you move upward, from level to level, in an energy pyramid, available energy ____. A)decreases B)increases C)stays at the same level D)is destroyed

A)Decreases

Which of the following organisms would NOT be in the first trophic level of an energy pyramid? A)dog B)tree C)grass D)algae

A)Dog

Cellular respiration is the process in which organisms break down food to release _____. A)energy B)nutrients C)sugar D)oxygen

A)Energy

Which of the following is NOT part of the water cycle? A)nitrogen fixation B)evaporation C)condensation D)precipitation

A)Nitrogen Fixation

As eutrophication occurs, populations of algae grow. How does this speed up succession? A)The algae use so much of the oxygen in the water that fish die, decay and add to the build up of soil. B)The algae become soil. C)The growth of the algae causes pollution to increase. D)The presence of the algae encourages sediment to drop out of streams into the pond.

A)The algae use so much of the oxygen in the water that fish die, decay and add to the build up of soil.

Which of the following is NOT a way that carbon is stored in the environment as a fossil fuel? A)water B)coal C)oil D)natural gas

A)Water

Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get enough resources to survive, while the flowers had not. This is an example of _____. Multiple choice question. A)competition B)population size C)habitat D)community

A)competition

What is the effect of the growth of a population in an ecosystem? Multiple choice question. A)fewer resources for each individual in the population B)a greater amount of resources in the ecosystem C)a decrease in the amount of resources needed by each individual D)an increase in the size of the ecosystem

A)fewer resources for each individual in the population

All the meerkats that live in a wildlife refuge make up which of the following? Multiple choice question. A)population B)community C)biosphere D)niche

A)population

In a predator-prey relationship, _____. Multiple choice question. A)the predator hunts the prey for food B)the prey hunts the predator for food C)the prey keeps the predator population from growing too large D)the prey are producers

A)the predator hunts the prey for food

What is the difference between a population and a community? Multiple choice question. A)A population is made up of all species in an area. A community is made up only of one species. B)A population is made up of only one species. A community is made up of all species in an area. C)A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area. D)The words mean the same thing.

B)A population is made up of only one species. A community is made up of all species in an area.

Which of the following does NOT move continuously through ecosystems? A)water B)aluminum C)energy D)nitrogen

B)Aluminum

What is the difference between a community and an ecosystem? Multiple choice question. A)An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area. B)An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area. C)An ecosystem consists of nonliving things in an area. A community is all the living things in the area. D)An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.

B)An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.

Photosynthesis uses all of the following except _____ to make food. A)carbon dioxide B)chemical energy C)light energy D)water

B)Chemical Energy

Which process can release carbon to the air and into the soil? Multiple choice question. A)photosynthesis B)decomposition C)combustion D)cellular respiration

B)Decomposition

Which of the following would eat a dead rabbit? A)carnivore B)detritivore C)herbivore D)omnivore

B)Detritivore

Which is a model of feeding relationships? A)protein building B)food map C)food web D)sugar molecules

B)Food Web

If an existing ecosystem is destroyed, ________. A)primary succession occurs B)secondary succession occurs C)a climax community comes into existence D)a different type of biome emerges

B)secondary succession occurs

Photosynthesis is the process in which plants use energy from light to produce _____. A)new cells B)organelles C)food D)none of the above

C)Food

Which of the following eats only eucalyptus leaves? A)carnivore B)detritivore C)herbivore D)omnivore

C)Herbivore

A male and female rabbit hop into a new area where there are no other rabbits. Before they can even find shelter, they are killed by a coyote. The existence of a predator is a _____ factor on the population of rabbits in the area. A)community B)ecosystem C)limiting D)negative

C)Limiting

Which is most likely the first step in a basic food chain? A)The snake obtains energy by eating the mouse. B)Plants make energy-rich food using sunlight. C)The Sun emits energy. D)The hawk obtains energy by eating the snake.

C)The Sun Emits Energy

As plants in an area undergoing ecological succession die, ________. Multiple choice question. A)they are replaced by plants of the same species B)they are replaced by plants of a different species C)either a or b could occur D)no plants grow in their place

C)either a or b could occur

A climax community is a community that ________. Multiple choice question. A)is about to experience a major change B)has just been radically altered by a natural disaster C)is a stable community that no longer goes through major ecological change D)is always characterized by large trees

C)is a stable community that no longer goes through major ecological change

Some populations have cooperative relationships. This is where _____. Multiple choice question. A)members of the same species compete for resources B)members of different species compete for resources C)members of the same species work together for survival D)members of different species work together for survival

C)members of the same species work together for survival

A population cannot exceed the_______________ of its environment, which is the largest number of individuals that an ecosystem can support.

Carrying Capacity

Explain how competition can limit population size.

Competition can affect the amount of resources any individual can get.

Which organisms use cellular respiration as a way to convert energy into usable form? A)seedless plants only B)only photosynthetic organisms C)only mammals D)all organisms

D)All Organisms

Which of these is a limiting factor? Multiple choice question. A)food supply B)shelter C)existence of predators D)all of the above

D)All of the Above

If there are no limiting factors, a population can reach its _____. Multiple choice question. A)competition level B)population potential C)population density D)biotic potential

D)Biotic Potential

Which of the following is NOT an example of how bacteria aid in the nitrogen cycle? A)nitrogen fixation B)breaking down the tissue of dead organisms C)changing nitrogen compounds into atmospheric nitrogen D)infecting tissue

D)Infecting Tissue

Which of the following would eat a hamburger with lettuce on it? A)carnivore B)detritivore C)herbivore D)omnivore

D)Omnivore

Which change in the ecosystem increases the carrying capacity for a particular species? Multiple choice question. A)drought B)flood C)appearance of a competing species D)disappearance of a competing species

D)disappearance of a competing species

Phytoplankton are said to release how much of the oxygen in Earth's atmosphere? A)between 5% and 10% B)between 15% and 20% C)less than 5% D)more than 50%

D)more than 50%

Which describes how the atoms in living things cycle? A)through living parts of ecosystems only B)in one direction from living to nonliving parts of the ecosystem C)in one direction from nonliving to living parts of the ecosystem D)repeatedly back and forth through living and nonliving parts of the ecosystem

D)repeatedly back and forth through living and nonliving parts of the ecosystem

Chloroplasts are the location of photosynthesis. True False

True

Living and nonliving parts of an environment together are referred to as a(n)

Ecosystem

What Flows Through Ecosystems in one Direction? A)carbon B)energy C)nitrogen D)water

Energy

A community consists of all the organisms in an ecosystem that belong to the same species. True false question. True False

False

A symbiotic relationship that benefits both species is referred to as commensalism. True False

False

Available energy increases as it is transferred from one organism to another in a food chain. True False

False

Consumers produce their own food. True False

False

Ecological succession in new areas of land with little or no soil is secondary succession. True False

False

Elements such as oxygen, nitrogen, and carbon cycle through a system once. True False

False

Energy cycles through ecosystems because it returns to the Sun. True False

False

Mutualism is any close relationship between different species. True False

False

Nitrogen, as it is found in the atmosphere, can be used by plants and animals. True False

False

Succession continues until it reaches a pine forest community. True or False

False

Sucrose molecules break down during cellular respiration. True False

False

The largest number of individuals of one species that an ecosystem can support over time is its biotic potential. True False

False

Why are food webs better representations of how energy moves through an ecosystem than food chains? A)light energy B)sound energy C)thermal energy D)chemical energy

Food webs include how energy enters an ecosystem, and food chains don't.

List three things that are limiting factors on the growth of a population.

Food, Sunlight, Water

The end product of aquatic succession is a new____________ecosystem.

Land

A symbiotic relationship in which both partners benefit is called

Mutualism

What is sea anemones help crabs fight off predators, and eat leftovers from the crabs' meals

Mutualism

A symbiotic relationship in which one species benefits and the other is harmed is_______________relationship.

Parasitic

What is Heartworm in a dog?

Parasitism

Hawks hunt and eat mice. Hawks and mice have a_________________________ relationship.

Predator-Prey

A pasture gradually returns to a forested state. This is________________ succession.

Secondary

After lava covers the land,________________ succession occurs.

Secondary

What is the source of the carbon atoms in a plant's cells? A)they were created as the plant grew B)the Sun C)water molecules D)the environment

The environment

In What Form is energy that is NOT Used for life processes released from living things? A)light energy B)sound energy C)thermal energy D)chemical energy

Thermal Energy

Name three factors that can result in a decrease in the size of a population.

a decrease in available food, a decrease in available water, a decrease in available space

Runoff fertilizer and livestock waste from farms can add to the_______________ of a pond.

eutrophication

Carbon dioxide is used by plants for

photosynthesis