Thursday 2/6/14Get out your study guides!!!

UNIT 6 & 7 REVIEW

Which species is the most closely related

to the sea lion?

seals

Which two species share the least characteristics?

A. raccoons and weasels

B. otters and FelidsOtters & Felids

Which animals have hair?

leopard

Which animals have a vertebral column?

Lamprey, tuna, salamander, turtle & leopard

Which organism(s) can be both a 2nd & 3rd level consumer?Coyote, Hawk, Roadrunner

Which organism would be on the bottom of the energy pyramid?

Grass & cactus

In the nitrogen cycle, what organisms that live in soil and on roots fix or make usable by plants the greatest amount of nitrogen?

Bacteria fix the most nitrogen.

Are bacteria biotic or abiotic?Biotic (living)

What would happen if decomposers like earthworms or microorganisms were

removed from an ecosystem?

The cycle will be disrupted and slowed

If a bee eats nectar from flowers and pollinates the flowers at the same

time, what type of relationship would it be?

Mutualism, they both get something

good.

How is a tick feeding on a dog considered to be

parasitic?

The tick takes away nutrients from the dog.

Write in the percentage of energy at each level in the

food chain.

100%

BirdGrass Grasshopper Snake

10% 1% .1%

What would happen if the bird population increased?

The grasshoppers would decrease and the grass and

snakes would increase

BirdGrass Grasshopper Snake

What is the role of the bird?

BirdGrass Grasshopper Snake

Producer

1o Consumer

2o Consumer

3o Consumer

Which level provides the most energy?

Grass

Grasshopper

Raccoon

Wolf

Producers

1st Consumer

2nd Consumer

3rd Consumer

100%

If there are 50 kilocalories of energy at the tertiary consumer level in a

habitat, how many kilocalories would be at the producer level?

50 tertiary500 secondary5,000 primary

50,000 producer

How much energy is passed to the next level?

10%

What happens to the other 90%?

Used by the organisms at that level & given off as heat

How does species diversity change over time as a result of succession?

Diversity INCREASES

Which taxon is more specific?

Familyspecies

classgenus species

What is the difference between primary &

secondary succession?

Primary succession begins with pioneer species (lichens) & occurs on

barren, uninhabited land.

Describe the order of how primary succession would

occur.

Barren landLichens & mosses appear

Grasses & small plants appearSmall trees appear

What is the benefit of having a classification system?

Common understanding of how to classify & name

organisms

If an organism has genes that improve their ability to survive & reproduce, then what will most

likely increase?

The frequency of genes in the population

Why does a pesticide used to kill insects lose its effectiveness over

time?

Insects become resistant to the pesticide & the frequency of that

allele increase

Why is overfishing detrimental to the

overgrowth of plant life?

Reduces the number of organisms that feed on the

producers.

If a native species & a non-native species are competitors for

resources, why is the non-native species more likely to survive

than the native species?.

The non-native species doesn’t have any natural

predators in the ecosystem

In a particular ecosystem, a population of red foxes has increased

while the coyote population has decreased. What kind of relationship

exists between the foxes & the coyotes?

The coyotes are predators of the foxes.

Present day whales evolved from ancestors that had four legs. What

would the fossils look like to support this theory?

The oldest fossils had four limbs & the most recent had flipper-like limbs

The carbon cycle includes carbon output to the atmosphere and carbon

reservoirs. These reservoirs help to maintain atmospheric carbon. What would happen to cause atmospheric

carbon to increase?

Destruction of any of the carbon reservoirs

True or False: Crocodiles have more traits in common with mammals

than they do with birds?False; birds & crocodiles are on the

same evolutionary branch

What type of organism did the pine cone & leaf come from?

Loblolly pine

According to the table, which 2 organisms are more closely

related?Mouse & baleen whale

Animal Sequence of Bases in Section of Hoxc8

Mouse C A G A A A T G C C A C T T T T A T G G C C C T

Baleen whale C C G A A A T G C C T C T T T T A A G G C G C T

Chicken A A A A A A T G C C G C T T T T A C A G C T C T