Ecosystems and populations Flashcards
do good
Define Biotic.
Living Factors/ Organisms
Define Abiotic.
Non Living Factor/ Organism
In evolutionary terms, animals which are the “Best adapted” are those which______________.
Have the most Variation
Which Bird is most evolutionarily successful?
A) Lays 7 eggs, 5 hatch and 4 reproduce
B) Lays 9 eggs, 8 hatch and 2 reproduce
C) Lays 2 eggs, 3 hatch and 2 reproduce
D) Lays 5 eggs, 5 hatch and 3 reproduce
A
What is a genetic change that increases an organism’ s chance of survival?
A Mutation
In order for genes to stay in a population, the organisms with those genes must___________.
Migrate and Reproduce
The continuing increase in the numbers of insect species is an example of`_____________.
Divergent Evolution
Populations are most likely to evolve differently if what occurs?
Geographical Isolation
Female Birds are less colourful because__________.
Camouflage aids in survival and male colour is necessary in courtship (Flirting) EX. Peacocks!
In the process of evolution do fossils, an individual, the population or only extinct organisms change over time?
The population
In the case of convergent limbs would the fins of a shark and porpoises be an ideal example?
Yes
Define and give an example of Homologous.
It means to have similar function. (Hypothetical example) The hind leg of a horse and the leg of a human.
What are structures that are present within the animal but no longer function in the organism?
Vestigial
What is an example of Convergent evolution?
Possible: a bat and a bird
What is the process of natural selection?
- Overproduction
- Struggle for survival
- Variation
- Survival of the fittest
- Speciation
Who theorized the inheritance of acquired traits?
Lamark
Why are acquired characteristics not inherited?
Because the genes are not altered
BONUS!!! What does DDT stand for?
dichloro-diphenyl-trichloro-ethane
Did you get it? ;) if you didn’t just put a 5 in anyways!
What are the 3 zones in aquatic systems? In order.
Littoral Zone
Limnetic Zone
Profundal Zone
What are the different kinds of Biotic potential? What does it mean?
Birth Potential- Max number of Births
Capacity for survival- The number to reach reproductive age.
Breeding frequency/ Length of reproductive life- Age of sexual maturity and number of fertile years
Carrying Capacity- Max number of individuals that can be supported by an ecosystem.
