Biology Unit #1 Assessment

Last updated over 6 years ago

26 questions

Note from the author:

Ecology 

Library

Biology Unit #1 Assessment

Last updated over 6 years ago

26 questions

Note from the author:

Ecology 

Question 1

Rabbit 

Spider

Grass

Hawk

Question 2

If there are more prdators.

as it transfers up trophic levels

when decomposers dominate.

if there are more producers

Question 3

climate change leads to prolonged growing season for pond plants.

heavy rains lead to higher water levels in the pond year-round

changes in water pH lead to fewer species of fish in the pond

Soil around the pond softens and sinks to greater depths.

Question 4

A high level of diodiversity in the organism's ecosystem

Access to multiple sources of fresh water

Barriers restricting access to resources

Reduction in the populations of competing species

Question 5

Grasses

Impala

Termite

Eagle

Question 6

a shift of environmental conditions favoring prairie grass.

a reduction of organisms that rely on the trees for protection

an influx of bird species that will occupy the trees.

an increase in field mice, as they will camouflage easier.

Question 7

Mutualism

parasitism

predation

commensalism

Question 8

Height above sea level

Presence of insects

Amount of available sunlight

pH of surrounding soil

Question 9

The bacteria obtain carbohydrates from the plant, and provide nitrogen in a usable form for the plant.

The bacteria provisde nitrogen in a usable form for the plant, and receive no benefit from the plant.

The bacteria use nutrients provided by the plant for food, eventually leading to the death of the plant.

The bacteria and the plant both require the same limited resources of water and soil to survive. 

Question 10

10.

When fossil fuels are burned, carbon enters the atmosphere as carbon dioxide.

The denitrifying bacteria turns the fossil fuel into carbon dioxide gas.

Decomposers convert the fossil fuels into greenhouse gasses like carbon dioxide.

The fossil fuels react with the soil to produce carbonates and carbon dioxide.

Question 11

11.

Lightning

Fertilizers

Dead plants

Atmosphere

Question 12

12.

Organisms compete when sufficient resources are not available.

Organisms can only compete for food and water.

Only organisms of different species can compete

Plants are not capable of competing for resources.

Question 13

13.

Car A

Car B

Car C

Car D

Question 14

14.

tissues that comprise organisms of that species

size of that species' population.

success of other populations in the community.

competition within other communities in the biosphere.

Question 15

15.

They produce antibiotics which destroy other microorganisms.

They metabolize substances and break down food during digestion

They decrease the amount of vitamins in the large intestine.

They purify food as it travels through the digestive system and remove contaminants. 

Question 16

16.

The bacteria converts sunlight into usable nutrients for the plant. 

The bacteria convert inorganic nitrogen into usable nitrogen for the plant.

The bacteria helps the roots absorb more water from the surrounding soil.

The bacteria helps the plant defend itself against predators.

Question 17

17.

Biodiversity reaches its lowest point.

Lichens and mosses dominate.

Animals begin to use plant resources.

Trees have replaced shrubs and grasses.

Question 18

18.

They can produce antibiotics.

They can release harmful toxins

They can release vitamins.

They can only infect viruses.

Question 19

19.

An increase in species diversity.

An increase in annual precipitation.

A decrease in soil complexity.

A decrease in temperature. 

Question 20

20.

Ecosystems include both biotic and abiotic factors. Which of the following is an abiotic factor?

Population 

Soil

Community

Organism

Question 21

21.

The long-term survival of a species is dependent on resources. The survival of the species is less likely to survive if these resources are

Limited

Not used by other species

Plentiful

Renewable as a result of natural processes

Question 22

22.

The environment can be arranged into different levels of organization. Which of the following shows a correct sequence that proceeds from a smaller specific level of organization to a larger less specific level?

biome.....habitat

population....species

community....population

ecosystem.....biome

Question 23

23.

Succession involves one community replacing another. What must be true of each community that appears?

The populations are adapted to their environment

the populations contain very simple life forms

the populations move to a different area to reestablish themselves

the new population will change from sexual reproduction to asexual reproduction of offspring. 

Question 24

24.

Only 10% of energy is passed from one trophic level to the next. What happens to the energy that is not passed on?

It is given off as heat or used in cellular processes.

it is consumed by decomposers.

it is transferred to the next trophic level.

It is used in bio-magnification.

Question 25

25.

Use the image above. Which of the following correctly illustrates the flow of energy through an ecosystem?

a

b

c

d

Question 26

26.

Ultimately, what is the source of all energy for life on Earth?

cellular respiration

water cycle

denitrification

the sun