Ch 7 Vosough Science Flashcards

1
Q

What is an ecosystem?

A

all the living (biotic) and nonliving (abiotic) things interacting in a particular area

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2
Q

What is a population?

A

a group of the same type of organisms living in the same area

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3
Q

What does biotic mean?

A

alive

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4
Q

What does abiotic mean?

A

nonliving/never alive

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5
Q

What is energy?

A

The ability to move or change things

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6
Q

What is the definition of change?

A

when something becomes different overtime

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7
Q

What is the largest ecosystem on Earth?

A

Ocean

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8
Q

What does an ecologist do?

A

studies the interactions of organisms with each other and their environment

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9
Q

What is the definition of biodiversity?

A

how many different species are in an ecosystem

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10
Q

What is biodiversity’s role in an ecosystem?

A

Biodiversity helps making an ecosystem stronger

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11
Q

What do ecosystems do for us (multiple things)?

A

Ecosystems have food, clean air, clean water, move nutrients, and other essentials

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12
Q

What are the 3 types of ecosystems we’ve talked about specifically? (there are many more)

A

forests, wetlands, and oceans

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13
Q

What is a consumer population?

A

any population that eats other organisms

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14
Q

What is the definition of a sample?

A

a small portion that represents the whole

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15
Q

What is a resource population?

A

any population that is food for other organisms

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16
Q

How can a population that is not a consumer or resource for dolphins affect its
birth/death rate?

A

indirect effect

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17
Q

What does stable mean in reference to a population?

A

a population’s amount of births and deaths are relatively the same

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18
Q

What is reproduction?

A

the process of creating offspring

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19
Q

How do producers get energy storage molecules?

A

photosynthesis

20
Q

What is glucose?

A

a molecule that organisms use to release energy and that is made of carbon, hydrogen, and oxygen atoms

21
Q

What can make reproduction require more energy than usual?

A

If the environment the species lives in also requires lots of energy

22
Q

How do organisms that aren’t producers get their energy storage molecules?

A

Eat their resource population

23
Q

What are the main types of energy storage molecules (3-4)?

A

Protein, glucose, fat, and starch

24
Q

What is a molecule?

A

a group of atoms joined together in a particular way

25
Q

What could cause the number of births to increase in a population? (more than 1)

A

More space, more food, less predators in the environment

26
Q

What could cause the number of deaths to increase in a population? (more than 1)

A

Less space, less food, more predators in the environment

27
Q

What is competition in an ecosystem?

A

when two or more populations use the same resources, such as the same food source

28
Q

What is the difference between a food web and a food chain?

A

food web contains multiple resource/consumer populations to one organisms but a food chain is one continuous line of organisms. (idk if this makes sense or not :/ )

29
Q

Biodiversity stays the same when the ecosystem is ____________?

A

stable

30
Q

What is the definition of an indirect effect?

A

the result of one cause leading to an effect that causes one or more other effects

31
Q

Name 3 main resources that organisms will compete for.

A

food, water, shelter

32
Q

What’s the difference between predation (predators) and consuming (consumer populations?)

A

Predation is when a predator has to hunt the prey down (fox hunting rabbit). Consuming is more vague and includes any organism eating another organism (cow eating grass).

33
Q

What happened in cups B and C of our yeast experiment and why did it not occur in cup A?

A

In cups B & C, they both puffed up, due to the mixture of glucose and yeast which created energy. In cup A, it only had yeast and needed glucose to rise.

34
Q

What does carrying capacity mean?

A

The maximum population that can be sustained indefinitely in an ecosystem

35
Q

When we cull something, what are we doing AND why?

A

reducing the population
to keep it stable

36
Q

Why is it important to collect as much previous and current population data for a species as possible?

A

To find out the carry capacity for the population

37
Q

What is photosynthesis?

A

a chemical process that takes in carbon dioxide, water, and sunlight, and converts it to oxygen and glucose

38
Q

What is symbiosis?

A

an interaction between two organisms in the same area

39
Q

What is predation?

A

when one organism hunts another for food

40
Q

What is mutualism?

A

when two species/organisms have a relationship that benefits both

41
Q

What is parasitism?

A

when one species lives in/off of another, and in doing so harms the host

42
Q

What is commensalism?

A

when one species is being helped by another, but the other species is not receiving harm/health

43
Q

What happens when a species goes over its carrying capacity?

A

Environment can’t hold enough of the population

44
Q

What makes up a scientific name?

A

genus & species

45
Q

What are the taxonomic levels of classification in order from broadest to most specific?

A

Domain, kingdom, phylum, class, order, family, genus, species.

46
Q
A