Unit B

Question 1

A Muskeg has *what* which keeps the soil from melting?

Answer 1

Permafrost.

Question 2

In a taiga, what is the difference between Canopy and the Forest floor?

Answer 2

Canopy has the most sunlight and the forest floor is dark.

Question 3

What part of a lake is the Limnetic Zone?

Answer 3

The middle zone between the Littoral Zone and the Profundal Zone. There is open water and enough sunlight for photosynthesis.

Question 4

What is the difference between Grassland and Deciduous Forest?

Answer 4

Deciduous Forest has more precipitation than Grasslands.

Question 5

What is a factor affecting aquatic systems?

Answer 5

Water pressure

Question 6

What affects temperature and sunlight?

Answer 6

Seasons, water depth, hydrothermal vents

Question 7

What’s the magic tempurature change number with the seasonal variations?

Answer 7

4*C

Question 8

Surface water cools to 4*C and then what happens to O2?

Answer 8

O2 sinks down to the bottom.

Question 9

BP-Birth potential, C-Capacity for survival, BF-Breeding frequency, M-Maturity

Larger mammals generally live longer than normal ones

Answer 9

C

Question 10

BP-Birth potential, C-Capacity for survival, BF-Breeding frequency, M-Maturity

Pregnant female elephants carry their young for nearly 18 months.

Answer 10

BF

Question 11

BP-Birth potential, C-Capacity for survival, BF-Breeding frequency, M-Maturity

Mice often produce litters of 6 or more

Answer 11

BP

Question 12

BP-Birth potential, C-Capacity for survival, BF-Breeding frequency, M-Maturity

After about 6 weeks, mice reach sexual maturity

Answer 12

M

Question 13

What is oligotrophic?

Answer 13

A deep, cold lake.

Question 14

What is eutrophic?

Answer 14

A shallow, warm lake.

Question 15

What is Taxonomy?

Answer 15

The science of classifying organisms.

Question 16

Name the seven levels of classification in order.

Answer 16

Kingdom

Phyla

Class

Order

Family

Genus

Species

Question 17

What is Phylogeny?

Answer 17

The hystory of the evolution of a species.

Question 18

What is a Dichotomous Key?

Answer 18

A two-part key used to identify living things.

Question 19

What is Paleontology?

Answer 19

The study of fossils.

Question 20

How does Radiometric dating tell scientists the age of rock or fossil?

Answer 20

It changes a particular atom into a daughter isotope of the same or a different element

Question 21

What is an endemic?

Answer 21

A species found in one location only.

Question 22

What is a homologous feature?

Answer 22

Feature with a similar structure, but a different funtion

Question 23

What is a vestigial feature?

Answer 23

May have served a useful funtion once but not anymore.

Question 24

What was Buffon’s theory about evolution?

Answer 24

Species could change over time and these changes could lead to new organisms

Question 25

What was Linnaeus's theory about evolution?

Answer 25

Thought that only a few species could reproduce

Question 26

What was Erasmus Darwin's theory about evolution?

Answer 26

All life developed from a single source

Question 27

What was Lamarck's theory?

Answer 27

Believed in Spontaneous generation, and inheritance of aquired traits. (That if a mother lost her arm, the baby would be born without an arm)

Question 28

What was Darwin's Theory of Natural Selection?

Answer 28

Stronger individuals are better adapted to survive than weaker ones, over time species inherit traits that gives that species a survival advantage

Question 29

What is a similarity between Lamarck and Darwin's theory?

Answer 29

They both knew that the encironment played an important role in evolution

Question 30

What is the two theories for Rate of Evolution?

Answer 30

Theory of Gradualism: Idea that speciation takes place slowly Theory of Puntuated Equilibrium: Idea that species evolves rapidly, followed by a period of little or no change