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Bio 20: study guide
Chapters 1 2 3
21
Biology
11th Grade
02/06/2015

Additional Biology Flashcards

 


 

Cards

Term

 

 

 

Dynamic Equilibrium

Definition

 

 

A constant change in the ecosystem to which animals can adjust.

Term

 

 

 

Bioshpere

Definition

 

 

 

The part of the Earth that has life

Term

 

 

 

Biotic

Definition

 

 

 

 The living part of the ecosystem

Term

 

 

 

Abiotic

Definition

 

 

 

The non-living part of the ecosystem

Term

 

population

 

community

 

ecosystem 

Definition

 

A group of the same species living together

 

different populations of species living together

 

the living and non living parts together as a whole

Term

 

 

 

Biodiversity

Definition

 

 

 

The total number of species in an ecosystem

Term

 

 

 

Food chain

Definition

 

 

 

a sequence linking organisms that feed on each other 

Term

 

Producer

 

 

 

Consumer

Definition

 

A producer is an is an organism that produces it's own food

 

A consumer is an organism that eats producers and or other consumers to survive

Term

 

 

 

Indicator species

Definition

 

 

An indicator species is an organism that is sensitive to changes in the environment and is therefore used to monitor changes in an ecosystem 

Term

 

 

detritus

 

decomposer

Definition

 

 

detritus is waste  from plants

 

a decomposer is an organism that eats detritus

Term

 

 

 

Habitat

Definition

 

 

 

a place where an qqan organism lives because it has suitable coniditions 

Term

 

 

Ultraviolet radiation 

 

ozone

Definition

 

 

ultraviolet radiation is radiation from the sun that burns skin

 

ozone is a layer around the earth that protects it and screens out some of the radiation

Term

 

 

 

Three of the structural zones and components of the biosphere

Definition

 

atmosphere- air part of the earth

 

lithosphere- rock part or solid part of the biosphere

 

hydrosphere- water part of the biosphere

Term

 

 

Trophic level

 

autotroph

 

 

Definition

 

A trophic level describes how organisms get their energy

 

 

an autotroph is a producer and it is the first trophic level 

Term

 

Primary consumer

 

secondary consumer

 

heterotroph

Definition

 

a primary consumer relies on the autotroph, second trophic level

 

secondary consumer relies on primary consumer, third trophic level

 

heterotroph is an organism incapable of making its own food

Term

Photosynthesis

 

cellular respiration 

 

chemosynthesis

 

chemoautotroph

 

Definition

photosynthesis is the process of turning the Suns energy into glucose

cellular respiration is how all organisms break down glucose and release energy

Organisms convert simple molecules into complex ones without the Suns energy

a chemoautotroph is a producer that doesn't need the Suns energy to produce energy

Term

 

 

What at are the two laws of thermodynamics?

Definition

 

energy can be transformed from one form to another 

cannot be created or destroyed

 

during any energy transfer energy is lost

Term

 

 

 

Which of the three pyramids is most effective at showing energy transfer in the food chain? Explain

Definition

 

The pyramid of energy because it measures the amount of Energy available at each energy level so you ca. Calculate how much energy animals at each tropic level can receive 

Term

 

 

 

 

 

Why are frogs good indicator species? 

Definition

 

 

 

They live in two different ecosystems so you can use one animal to monitor two different ecosystems. Also frogs are sensitive to changes in the environment so by monitoring their population you can see what changes are happening to the ecosystem. 

Term

 

 

 

Why might the pyramid of numbers and biomass of the same ecosystem be different shapes? 

Definition

 

 

They may be different shapes because biomass measures the dry mass of species in an ecosystem however pyramid of numbers is drawn by counting animals. Or plant species. 

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