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Ecosystems

Total questions: 74

Worksheet time: 1hrs 27mins

Name
Class
Date
1.
Which of the following is the correct order of organization in living things from most basic (simple) to most complex?
a)
a.  Organism, cell, tissue, organ, organ system
b)
a.  Organ system, organ, tissue, cell, organism
c)
a.  Cell, tissue, organ, organ system, organism
d)
a.  Cell, organ, tissue, organ, organism, organ system
2.

Groups of cells with similar functions.

a)

Organs

b)

Molecules

c)

Tissues

d)

Organelles

3.

Group of tissues with similar functions.

a)

Organelles

b)

Cells

c)

Tissues

d)

Organs

4.

Group of organs with similar functions.

a)

Organism

b)

Cell

c)

Organ

d)

System

5.
When a group of organs work together to perform a particular function they create a/an
a)
organ system
b)
organism
c)
tissue
d)
organ
6.

Plants and animals in the tundra must be able to adapt to the extremely ___________ weather

a)

small

b)

cold

c)

perennials

d)

shallow

7.

Many of the animals in the desert are ______________ to avoid the extreme heat during the day.

a)

cacti

b)

chia

c)

water

d)

nocturnal

8.
Which two biomes have the least precipitation?
a)
tropical rain forest and temperate grasslan
b)
savanna and tropical dry forest
c)
tundra and desert
d)
boreal forest and temperate woodland
9.
What is this biome?
a)
Coniferous Forest
b)
Desert
10.
What is this biome?
a)
Deciduous Forest
b)
Tropical Rainforest
11.
In an energy pyramid, energy_______ as you move up the pyramid.
a)
Increases
b)
Decreases
c)
Stays the same
d)
Changes up and down
12.

In this energy pyramid, which organisms have the most energy available?

a)

Producers

b)

Carnivores

c)

Herbivores

d)

Top Predator

13.
Which organism in this food chain is a producer?
a)
Fish
b)
Grass
c)
Grasshopper
d)
Hawk
14.

Suppose that a new predator of the rabbit migrated to this ecosystem. What is the most likely initial effect on the other organisms?

a)

More competition among the mice for food

b)

More competition among the hawks for food

c)

Less competition among snakes for food

d)

Less grass available for food

15.

What is a Cell?

a)

The smallest basic unit of structure and function in living things

b)

The smallest basic unit of structure of matter

c)

Groups of similar cells that have a common function

d)

A structure that is composed of different kinds of tissues that perform similar functions

e)

A structure that consists of different organs that work together closely to perform a vital function

16.

A body structure that is composed of different kinds of tissues that perform closely related functions

a)

Cell

b)

Tissue

c)

Organ

d)

Organ System

e)

Organism

17.

Level of organization: Reorder the following from smallest to largest

a)

Individual (Species)

b)

Population

c)

Community

d)

Ecosystem

e)

Biome

1)
2)
3)
4)
5)
18.

Match the following

a)

Species

1.

a group of organisms that are genetically related and can breed to produce fertile young

b)

Population

2.

a group of organisms of one species that interbreed and live together within a defined area.

c)

Communities

3.

groups of populations comprised of many species that live together in a defined area.

d)

ecosystem

4.

a combination of the communities and the physical (non-living) environment.

e)

Biome

5.

large area that has a particular climate, and particular species of plants and animals that

19.

A (a)   is a large group of many ecosystems.

20.

Match the following

a)

Abiotic Factor

1.

nonliving factors (soil, pollution, natural disasters, climate)

b)

Biotics Factor

2.

Living factors (plants and animals)

c)

Habitat

3.

is a place where a particular population lives (anthills, squirrel nests, beaver dams, etc)

21.

Match the following

a)

Primary Succession

1.

On land, succession that occurs where no soil previously existed is called _______.

b)

Pioneer Species

2.

The first species to populate the area are called _______.

c)

Secondary Succession

3.

______ occurs in areas where soil exists, but has been damaged or di

22.

Select all that are biotic

a)

Tall bluestem grass

b)

Post Oak Tree

c)

Red Tailed Hawk

d)

Average temperature 94 degrees

e)

6-8 inches of rainfall/year

23.

A carnivore eats

a)

Happy Meals

b)

Meat

c)

Plants

24.

Detritivores eat

a)

Plants Only

b)

Meat Onlt

c)

Dead organic matter

25.

Decomposer is responsible for

a)

eating all the meat.

b)

recycle nutrients in an ecosystem.

c)

eat only plants.

26.

Trophic Levels represent ...

a)

level of students at VOHS.

b)

levels of nourishment in a food chain.

c)

level of largest plants

27.

Models the complex network of feeding relationships

a)

trophic levels

b)

food webs

c)

food chains

28.

What is Biomass?

a)

the total mass of organisms in a given area

b)

all the compost

29.

Match the following

a)
1.

Predation

b)
2.

Symbiosis

c)
3.

Commensalism

d)
4.

Parasitism

30.

A condition that occurs when two or more organisms compete for the same resources

a)

competition

b)

predation

c)

parasitism

d)

mutualism

31.
Food, water, sunlight, shelter, and space are resources that are  __________.
a)
limiting factors
b)
wet
c)
messy
d)
found in rocks
32.

Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?

a)

Predator-Prey Relationships

b)

Competition

c)

Herbivory Effect

d)

Weather

33.

A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

a)

Predator-Prey Relationships

b)

Natural Disaster

c)

Herbivory Effect

d)

Competition

34.

In many desert ecosystems, days are hot and nights are cold. Water is scarce, so animals seek water wherever possible. The spines of a cactus are actually leaves adapted to conserve water. The cactus plants have also adapted to live in thin, sandy soil. Which of the following is a biotic component of a desert ecosystem?

a)

the thin, sandy soil

b)

the wide temperature range

c)

the scarcity of water

d)

the spiny cactus leaves

35.

What happens if a population grows past its carrying capacity?

a)

The population keeps growing

b)

The population starts to die off

c)

The entire species will go extinct

d)

The carrying capacity just increases

36.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
37.

a relationship between two species that benefits both of them

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

38.

a relationship between two species that benefits one of them, but the other is not harmed or helped

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

39.

a relationship between two species that benefits one of them, and the other is harmed

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

40.

This is ___

a)

mutualism

b)

commensalism

c)

parasitism

41.

This is the largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population crash

c)

lag phase

d)

mutualism

42.

Animal that gets its energy and nutrition from eating plants.

a)

Parasite

b)

Herbivore

c)

Carnivore

d)

Ominvore

43.

Animal that gets its energy and nutrition from eating meat.

a)

Detritivore

b)

Ominvore

c)

Carnivore

d)

Herbivore

44.

Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.

a)

Ominvore

b)

Detritivore

c)

Heterotroph

d)

Autotroph

45.

Organisms that get their energy and nutrition from other organisms (consumers).

a)

Heterotroph

b)

Autotroph

c)

Decomposer

d)

Detritivore

46.

Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products and recycle nutrients back to the ecosystem.

a)

Producer

b)

Trophic

c)

Decomposer

d)

Autotrooph

47.

Heterotrophs that “clean up” the ecosystem by eating dead and decaying organisms.

a)

Autotrophs

b)

Herbivores

c)

Ominvores

d)

Detritivores

48.

The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain.

a)

Trophic Levels

b)

Toxic Levels

c)

KeKe Levels

d)

Environmental Systems

49.
The arrows in a food chain or web represent ...
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show the direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
50.
The owl and weasel compete for which organism?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
51.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
52.

Why is some energy not passed on to the next trophic level?

a)

The organisms at each level use about 90% of the available energy to live.

b)

The statement is NOT true. All energy IS passed from one trophic level to the next.

c)

The organisms at each level use about 10% of the available energy to live.

d)

Most energy is absorbed by the soil instead.

53.

Analyze the positions of the hawk and the snake in the food web pictured above. Which of the following statements is correct?

a)

The hawk eats more types of organisms in the food web than the snake does.

b)

The eagle eats the same types of organisms as the snake does.

c)

The snake eats more types of organisms in the food web than the eagle does.

d)

The snake is eaten by the same types of organisms as the eagle is.

54.
What percentage of energy is passed on to each trophic level?
a)
10%
b)
50%
c)
90%
d)
100%
55.

Match the following

a)
1.

Primary succession

b)
2.

pioneer species

c)
3.

abiotic factor

d)
4.

secondary sucession

e)
5.

climax community

56.

Primary succession occurs in an area that has:

a)

Has Soil

b)

Has No Soil

c)

Has Some Soil

d)

none of these

57.
What is ecological succession?
a)
A slow change in an environment
b)
A change that takes days in an environment
c)
No change
d)
Abiotic change
58.
What are examples of pioneer species in a primary succession?
a)
Bushes and Shrubs
b)
Oak trees
c)
Mossess and Lichens 
d)
A rose Bush
59.

After a volcanic eruption, volcanic rock is present (but no soil). Which of the following states the most likely order of succession that would be seen?

a)

Lichens → Shrubs → Grasses → Trees

b)

Lichens → tree → shrubs→Grasses

c)

Grasses → Lichens → Shrubs → Trees

d)

Lichens → Grasses → Shrubs → Trees

60.
What is the correct order from oldest (happened first) to youngest (happened last) in this pond succession?
a)
A, B, C, D
b)
D, C, B, A
c)
B, A, D, C
d)
C, D, A, B
61.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
62.
Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?
a)
A tornado
b)
A volcanic eruption
c)
A flood
d)
A drought
63.
How animals get the nitrogen they need
a)
from the air they breathe
b)
from the water they drink
c)
from the food they eat
d)
from the Sun
64.
How plants get the nitrogen they need
a)
from the air
b)
from the soil or water in which they live
c)
from the Sun
d)
from broken down rocks
65.

Which is NOT a process of the water cycle?

a)

precipitation

b)

freezing

c)

transpiration

d)

evaporation

66.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
67.
What converts nitrogen into a useable form for plants and animals?
a)
bacteria
b)
fungi
c)
rain
68.
In this energy pyramid, what is the proper name for ANY ORGANISM ABOVE THE PRODUCER LEVEL?
a)
decomposers
b)
consumers
c)
producers
d)
omnivores
69.

Biomes are mainly determined by _____ and ____.

a)

temperature

b)

weather

c)

precipitation

d)

soil

e)

rocks

70.

What are some characteristics of tundra?

a)

permafrost

b)

very cold, low average temperatures

c)

lots of trees

d)

small amount of plants

e)

high amount of rainfall

71.

What are some characteristics of a tropical grassland/savanna?

a)

warm temperatures

b)

seasonal rainfall

c)

lots of trees

d)

grassland

e)

low average temperature

72.

Which biome consists of lakes, rivers, and streams and only includes 3% of the Earth’s water?

a)

Marine open ocean

b)

Marine coastal

c)

Tundra

d)

Freshwater

73.
Which biome, because of its climate, has the largest number of species of plants and animals?
a)
tundra
b)
desert
c)
tropical rainforest
d)
pine forest
74.
Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?
a)
taiga
b)
tundra
c)
deciduous forest
d)
grassland

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