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BIO1108 FINAL

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Biology

University/Undergrad

121 Terms

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exponential population growth

population increase under idealized conditions

- cannot be sustained for long in most populations

-under these conditions, the rate of reproduction is at its maximum
*called the intrinsic rate of increase (r-max)

-this graph is usually a j-shaped curve

- the equation is dN/dt=r-maxN
*N=population size
* the result is the change in population over time

Logistic Population Growth

A more realistic population model limits growth by incorporating a carrying capacity

- carrying capacity (K) is the maximum population size the environment can support

-the equation is dN/dt=r-maxN (K-N)/K
* (=exponential growth x % of carrying capacity remaining)

A grouping of species A, B, D, and E based on a trait that was present in the ancestor at node 2 would be considered:

Paraphyletic

Which of these characteristics evolved at node E?

Skull

Match the letters to the organism that belongs in that place on the phylogenetic tree

A - Turtle
B - Frog
C - Shark
D - Earthworm
E - Coral

Match the following organisms to their correct phylogenetic placement