quiz #1 ecology

Question 1

define sustainable ecosystem?

Answer 1

an ecosystem that can survive and function over time

Question 2

define ecosystem

Answer 2

the living and non-living parts of an environment

Question 3

define community

Answer 3

all of the organisms in an ecosystem

Question 4

define population

Answer 4

all of the members of a species living in the same ecosystem

Question 5

define organism

Answer 5

an individual living being

Question 6

define habitat

Answer 6

place where an organism lives

Question 7

define niche

Answer 7

an organism’s role, or job, in its environment

Question 8

define ecology

Answer 8

the study of how organisms interact with one another and their environment

Question 9

Define biotic factors

Answer 9

Living organisms Examples: trees, animals, humans

Question 10

Define abiotic factors

Answer 10

Non-living organisms Examples: sunlight,rock, water

Question 11

Define Photosynthesis

Answer 11

The process plants use to produce carbohydrates from carbon dioxide,water, and sunlight

Question 12

Where is the energy after the process of photosynthesis has taken place?

Answer 12

The energy is stored in the chemical bonds of the glucose molecule

Question 13

How does this energy flow through the rest of the ecosystem?

Answer 13

The stored energy in the glucose molecule gets released when an animal consumes the plant

Question 14

Define cellular respiration?

Answer 14

Process organisms use to obtain energy from glucose and other carbohydrates

Question 15

Cellular respiration and photosynthesis?

Answer 15

photosynthesis and cellular respiration use the same chemicals but in reverse order

Question 16

Define energy

Answer 16

Energy flows in one direction,it is the movement of energy, which originally comes from the sun, from one organism to another.

Question 17

Define matter

Answer 17

Matter is re-used continuously passes through food chain and returned to the soil.

Question 18

What would happen to the ecosystem if it did not have any decomposers or scavengers?

Answer 18

Matter is not being cycle, if not returned to soil, plants wouldn’t grow and it would affect the food chain

Question 19

When a lit candle is put in a jar why did it go out?

Answer 19

The candle went out because of lack oxygen and combustion cannot occur

Question 20

Why does a mouse die in the jar?

Answer 20

Lack of oxygen, cell respiration cannot occur and each cell cannot make energy

Question 21

Why did the plant live when placed in a jar?

Answer 21

Oxygen in the jar is used for photosynthesis and it also produces its own oxygen to carry out

Question 22

Why did the mouse live when placed in the jar with the plant?

Answer 22

The oxygen for cellular respiration that was provided by the plant which is photosynthesis

Question 23

Autotroph

Answer 23

An organism that makes its own food by using the sun’s energy Example: plants( berries)

Question 24

Heterotroph

Answer 24

An organism that cannot produce its own food so it must consume other organisms for energy Example: mouse

Question 25

Herbivore

Answer 25

An organism that eats only plants Example: moose

Question 26

Carnivore

Answer 26

An organism that eats only animals Example: eagle

Question 27

Ommivore

Answer 27

An organism that eats both plants and animals Example: frog

Question 28

Producer

Answer 28

An organism that makes its own food by using the sun's energy Example: lily pads

Question 29

Consumer

Answer 29

Obtains energy by eating other organisms

Question 30

Primary consumer

Answer 30

An organism that only eats producers Example: grasshopper

Question 31

Secondary consumer

Answer 31

An organism that eats primary consumers Example: frog

Question 32

Scavenger

Answer 32

An organism that feeds on animals that have been killed by other animals Example: crow

Question 33

Decomposer

Answer 33

An organism that breaks down waste materials or dead remains and return nutrients to the soil

Question 34

Detritus

Answer 34

Plant and animal waste and remain

Question 35

Trophic level

Answer 35

Any class of organisms that occupy the same position in a food chain

Question 36

Food chains

Answer 36

A step-by- step sequence linking organisms that feed on each other

Question 37

Example of a food chain

Answer 37

Grass ----\> vole -----\> barn owl

Question 38

Trophic level names

Answer 38

First trophic level, second trophic level, third trophic level, fourth trophic level

Question 39

Consumer names

Answer 39

Primary consumer, secondary consumer, tertiary consumer

Question 40

Food chains have different feeding levels, or ....

Answer 40

Or trophic level

Question 41

10% rule

Answer 41

Only 10% of the energy in an organism is passed on to the next trophic level

Question 42

Food webs

Answer 42

Food webs are interlocking food chains. They illustrate how individual organisms are involved in many food chains

Question 43

What would be the effect on grasshoppers if there were fewer leaves?

Answer 43

Fewer leaves --\> less voles --\> less bobcats --\> more frogs = less grasshoppers

Question 44

What would be the effect on voles if fewer hawks?

Answer 44

Fewer hawks --\> more weasels --\> less grasshoppers --\> more grass = more vole

Question 45

What percent of the energy gets passed along at each stage

Answer 45

10% gets passed on to the organism in the next trophic level 30% gets used up and converted to heat by the daily activities of the organism 60% gets passed along to decomposers and scavengers

Question 46

CHEMICAL EQUATION FOR PHOTOSYNTHESIS

Answer 46

Question 47

CHEMICAL EQUATION FOR CELLULAR RESPIRATION

Answer 47

Question 48

Answer 48

Question 49

Water nautral source and how do organisms use water?

Answer 49

* lakes * ponds * oceans * rivers * snow organisms use water to clean, move salt and vitamin through the body and digestion

Question 50

Nitrogen nautral resource and how do organism use nitrogen?

Answer 50

* air * soil * 78 % of the atmosphere To make DNA,cells. and tissues

Question 51

carbon nautral sources and how do organisms use carbon?

Answer 51

* ocean release * respiration * decomposition Use for protein and DNA