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Topic 5 - Ecology and Evolution
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What best describes the mode of nutrition for a heterotroph?
It obtains organic molecules from other organisms
What is the secondary consumer?
The turtle
If 14000kJ m
-2
year
-1
of energy is transferred from plant to worm, how much is passed from turtle to eagle?
Approximately only 10% of energy passes up the food chain, so ~140kJ moves up to the eagle.
What is an
autotroph
?
HELP:
Auto = self
Troph = feeding
Organisms that synthesize their own organic molecules (food) from simple inorganic substances. e.g. plants. These are also called
producers
What is a
detritivore?
Ingesdt dead organic matter.
What is a
saprotroph?
Live on dead OR
in
dead organic matter. they secrete enzymes into and absorb the products of digestion. e.g. bread mould and mushrooms.
List, in order the groups from Kingdom to Species
KINGDOM = King
PHYLUM = Philip
CLASS = Came
ORDER = Over
FAMILY = For
GENUS = Good
SPECIES = Sushi
What is the 2 name system of naming species called?
Binomial system of nomenclature
How can a population grow?
When offspring are added by being born =
natality
When individuals move to the area =
immigration
How can a population decrease in size?
When individuals die =
mortality
When individuals move out of the area to live elsewhere =
emigration
on the growth curve....what are A, B and C?
A=
lag
phase
B =
exponential
phase
(sometimes called
log
phase)
(individuals being born are more than individuals dying)
Between B and C =
transitional
phase
C =
Plateau
phase (individuals being born is equal to individuals dying). Something has limited the population
Author
ENason
ID
155628
Card Set
Topic 5 - Ecology and Evolution
Description
IB DP BIOLOGY Topic 5
Updated
2012-05-24T11:22:57Z
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