Ch 7 Vosough Science

Question 1

What is an ecosystem?

Answer 1

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

Question 2

What is a population?

Answer 2

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

Question 3

What does biotic mean?

Answer 3

alive

Question 4

What does abiotic mean?

Answer 4

nonliving/never alive

Question 5

What is energy?

Answer 5

The ability to move or change things

Question 6

What is the definition of change?

Answer 6

when something becomes different overtime

Question 7

What is the largest ecosystem on Earth?

Answer 7

Ocean

Question 8

What does an ecologist do?

Answer 8

studies the interactions of organisms with each other and their environment

Question 9

What is the definition of biodiversity?

Answer 9

how many different species are in an ecosystem

Question 10

What is biodiversity’s role in an ecosystem?

Answer 10

Biodiversity helps making an ecosystem stronger

Question 11

What do ecosystems do for us (multiple things)?

Answer 11

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

Question 12

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

Answer 12

forests, wetlands, and oceans

Question 13

What is a consumer population?

Answer 13

any population that eats other organisms

Question 14

What is the definition of a sample?

Answer 14

a small portion that represents the whole

Question 15

What is a resource population?

Answer 15

any population that is food for other organisms

Question 16

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

Answer 16

indirect effect

Question 17

What does stable mean in reference to a population?

Answer 17

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

Question 18

What is reproduction?

Answer 18

the process of creating offspring

Question 19

How do producers get energy storage molecules?

Answer 19

photosynthesis

Question 20

What is glucose?

Answer 20

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

Question 21

What can make reproduction require more energy than usual?

Answer 21

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

Question 22

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

Answer 22

Eat their resource population

Question 23

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

Answer 23

Protein, glucose, fat, and starch

Question 24

What is a molecule?

Answer 24

a group of atoms joined together in a particular way

Question 25

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

Answer 25

More space, more food, less predators in the environment

Question 26

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

Answer 26

Less space, less food, more predators in the environment

Question 27

What is competition in an ecosystem?

Answer 27

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

Question 28

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

Answer 28

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 :/ )

Question 29

Biodiversity stays the same when the ecosystem is ____________?

Answer 29

stable

Question 30

What is the definition of an indirect effect?

Answer 30

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

Question 31

Name 3 main resources that organisms will compete for.

Answer 31

food, water, shelter

Question 32

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

Answer 32

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).

Question 33

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

Answer 33

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.

Question 34

What does carrying capacity mean?

Answer 34

The maximum population that can be sustained indefinitely in an ecosystem

Question 35

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

Answer 35

reducing the population to keep it stable

Question 36

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

Answer 36

To find out the carry capacity for the population

Question 37

What is photosynthesis?

Answer 37

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

Question 38

What is symbiosis?

Answer 38

an interaction between two organisms in the same area

Question 39

What is predation?

Answer 39

when one organism hunts another for food

Question 40

What is mutualism?

Answer 40

when two species/organisms have a relationship that benefits both

Question 41

What is parasitism?

Answer 41

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

Question 42

What is commensalism?

Answer 42

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

Question 43

What happens when a species goes over its carrying capacity?

Answer 43

Environment can’t hold enough of the population

Question 44

What makes up a scientific name?

Answer 44

genus & species

Question 45

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

Answer 45

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