Ecology 02.24.15 Flashcards

(32 cards)

0
Q

What is a biosphere?

A

The portion of the earth that supports life

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1
Q

What is ecology?

A

The study of the interactions of organisms and their environment

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2
Q

What are biotic factors?

A

All the living organisms that inhabit an environment

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3
Q

What are abiotic factors?

A

All the non living parts of the environment

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4
Q

What is a population?

A

A group of organisms of one species that interbreed and live in the same area

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5
Q

What is a community?

A

A collection of populations that interact with one another

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6
Q

What is an ecosystem?

A

Interactions of a community and its abiotic factors

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7
Q

Niche vs habitat

A

Every species had s particular function in its community

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8
Q

What is a niche?

A

The role a species plays in a community

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9
Q

What is a habitat?

A

The place where the organism lives

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10
Q

What are autotrophs?

A

Organisms that use solar energy to make their own food

Also called producers

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11
Q

What’re heterotrophs?

A

Organisms that depend on other organisms for food and energy

Also called consumers

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12
Q

What are herbivores?

A

Eat only plants

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13
Q

What’re carnivores?

A

Eat other heterotrophs

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14
Q

What are scavengers?

A

Eat dead organisms

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15
Q

What are omnivores?

A

Eat both animals and plants

16
Q

What are decomposers?

A

Absorb nutrients from dead organisms

17
Q

What is symbiosis?

A

Relationships between organisms

18
Q

What is it when one species benefits and the other is not harmed or benefited?

19
Q

What is a symbolic relationship in which both species benefit?

20
Q

What is it when a symbiotic relationship in which one species benefits and the other is harmed?

21
Q

Who made the periodic table

A

Dmitri Mendeleev

22
Q

What does the periodic table show

A

All known elements in the universe

23
Q

What does the periodic table organize

A

The elements by chemical properties

24
What is the atomic number
The number of protons found in the nucleus of an atom or the number of electrons surrounding the nucleus of an atom
25
What is the symbol
An abbreviation of the element name
26
What is the atomic weight
The number of protons and neutrons in the nucleus of an atom
27
How do I find the number of protons electrons and neutrons in an element using the periodic table
* # of protons = atomic number * # of electrons= atomic number * # of neutrons= atomic weight - atomic number
28
What are the rows or periods of the periodic table labeled
1-7
29
What are the alkali metals
Highly reactive metals that you not occur freely in nature
30
Where are alkaline metals found
Angry flight of the periodic table
31
How many electrons are in the alkali metals outershell
One