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Unit 1 Practice Test

Total questions: 67

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

What characteristic is shown: A bacteria cell divides itself in two.

a)

Reproduce

b)

Respond to a Stimulus

c)

Homeostasis

d)

Grow and Develop

2.

Which characteristic is shown: An American alligator kills and eats a fish.

a)

Change Over Time

b)

Acquire and Use Energy

c)

Grow and Develop

d)

Made of Cells

3.

Which characteristic is shown: A corn field absorbs sunlight to produce food.

a)

Made of Cells

b)

Respond to a Stimulus

c)

Acquire and Use Energy

d)

Genetic Code

4.

Which characteristic is shown: A chocolate lab puppy becomes a fully grown dog.

a)

Respond to a Stimulus

b)

Grow and Develop

c)

Homeostasis

d)

Change Over Time

5.

Which characteristic is shown: A tadpole grows legs and becomes a fully grown frog.

a)

Homeostasis

b)

Grow and Develop

c)

Acquire and Use Energy

d)

Change Over Time

6.

Which characteristic is shown: Your body sweats to maintain body temperature.

a)

Respond to a Stimulus

b)

Homeostasis

c)

Made of Cells

d)

Change Over Time

7.

Which characteristic is shown: Carbon Dioxide is used in your blood to maintain the blood pH.

a)

Respond to a Stimulus

b)

Homeostasis

c)

Reproduce

d)

Grow and Develop

8.

Which characteristic is shown: A plant switches position and follows the sunlight throughout the day.

a)

Grow and Develop

b)

Respond to stimulus/environment

c)

Acquire and Use Energy

d)

Reproduce

9.

Which characteristic is shown: A deer runs from a dog after hearing barking.

a)

Made of Cells

b)

Respond to stimulus/environment

c)

Acquire and Use Energy

d)

Homeostasis

10.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
11.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
12.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
13.
How many variables do we want to be testing at one time?
a)
1
b)
2
c)
3
d)
4
14.
The independent variable is the ONE thing you _____.
a)
change
b)
keep the same
c)
experiment with
d)
investigate
15.
The measurable factor in an experiment is known as the: 
a)
Control
b)
Independent Variable
c)
Constant
d)
Dependent Variable
16.

All of the living and nonliving things in an environment

a)

ecosystem

b)

biome

17.

A cactus

a)

Biotic factor

b)

Abiotic factor

18.

Air

a)

Biotic factor

b)

Abiotic factor

19.

Soil or dirt

a)

Biotic factor

b)

Abiotic factor

20.

Precipitation (rain, snow, sleet, hail)

a)

Biotic factor

b)

Abiotic factor

21.
What term best describes this group of bison?
a)
Species
b)
Community
c)
Ecosystem
d)
Population
22.
What term best describes all the plants and animals in this image?
a)
Species
b)
Population
c)
Ecosystem
d)
Community
23.
How many different animal populations are in this image?
a)
1
b)
6
c)
17
d)
26
24.
This image shows both living and non living things in an area.  What term best describes this?
a)
species
b)
community
c)
population
d)
ecosystem
25.
The ___________ is all the area on and around earth where living things exist.
a)
Biome
b)
Biosphere
c)
Ecosystem
d)
Ecosphere
26.
What are the abiotic factors in this image? 
a)
water, sunlight, dirt, air
b)
birds and plants
c)
water, plants, and birds 
27.

What does autotroph mean?

a)

self feeding

b)

self motivated

c)

self conscious

d)

self aware

28.

An organism that can make its own food by using energy from sunlight is a:

a)

autotroph

b)

heterotroph

29.

A plant is a:

a)

autotroph

b)

heterotroph

30.

An organism that obtains nutrients by consuming other organisms is a:

a)

autotroph

b)

heterotroph

31.

An organism that cannot produce their own food:

a)

autotroph

b)

heterotroph

32.

A tree is a:

a)

autotroph

b)

heterotroph

33.

A lion is a:

a)

autotroph

b)

heterotroph

34.

A human is a:

a)

autotroph

b)

heterotroph

35.

In which type of symbiotic relationship do both species benefit (+,+) ?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

36.

In which type of symbiotic relationship does one species benefit while the other species is not affected (+, 0)?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

37.

In which type of symbiotic relationship does one species benefit while the other species is harmed (+,-)?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

38.
Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
39.

What is a food chain?

a)

The flow of energy from one thing to another

b)

The way animals eat each other

c)

The way the sun makes everything

d)

How the plants grow

40.

What is a Producer?

a)

An animal that eat plants

b)

An animal that eats meat

c)

is a plant that produces their own food

d)

An animal that grows really tall

41.

which one is a Producer?

a)
b)
c)
d)
42.

Click on the picture to answer the question. What is true about a food chain?

a)

It is just 1 path of energy.

b)

It is all possible energy paths.

43.

Click on the picture to answer the question. What is true about a food web?

a)

It is just 1 path of energy.

b)

It is all possible energy paths.

44.

According to the image, what is the producer?

a)

plant

b)

insect

c)

mouse

d)

snake

45.

What are "producers" producing?

a)

the energy for the food chain

b)

the insects for the food chain

46.

The word "primary" means "first."

If that's true, what does primary consumer mean?

Hint: look carefully at the food chain!

a)

the first organism in a food chain

b)

the first organism that consumes something else for energy

47.

According to the image, what is the primary consumer in the food chain?

a)

plant

b)

insect

c)

mouse

d)

snake

48.

According to the image, what is the secondary consumer?

a)

plant

b)

insect

c)

mouse

d)

snake

49.

Imagine you're an explorer in the wild, observing a food web. What do the arrows in this food web represent?

a)

Animals munching on their lunch

b)

The bright sunlight shining down

c)

The flow of energy from one creature to another

d)

The physical matter of the organisms

50.
The efficiency of energy transfer from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
51.
Trophic levels are represented by 
a)
squares
b)
circles
c)
pyramids
d)
lines
52.
In an energy pyramid, energy_______ as you move up the pyramid.
a)
Increases
b)
Decreases
c)
Stays the same
d)
Changes up and down
53.

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

a)

Producers

b)

Carnivores

c)

Herbivores

d)

Top Predator

54.

In this energy pyramid, which organism has the least amount of energy available?

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Top Predator

55.

The graph below represents the growth of a population of flies in a car? Which of the following statements best describes the graph?

a)

The fly population did not change.

b)

The fly population decreased, then increased.

c)

The fly population grew following the logistic growth model.

d)

The fly population grew following the exponential growth model.

56.

Which of the following could be a density-independent limiting factor in the desert?

a)

number of prey

b)

food supply

c)

parasitism

d)

rainfall

57.

Which point in this graph represents exponential growth?

a)

Point E

b)

Point A

c)

Point B

d)

Point C

58.

The graph represents _____ of a population.

a)

logistic growth model

b)

exponential growth model

59.

Which point on the graph best represents the carrying capacity?

a)

Letter A

b)

Letter C

c)

Letter E

d)

Letter D

60.

In which month(s) did the Cottontail Rabbits reach their carrying capacity?

a)

January and February

b)

March and May

c)

April and January

d)

April and May

61.

Which of the following is density-independent limiting factor?

a)

disease

b)

competition

c)

earthquake

d)

predation

62.

Without other changes to a population, which of the following will cause a population to increase in size?

a)

The birth rate equals the death rate.

b)

The birth rate is less than the death rate.

c)

The birth rate is greater than the death rate.

d)

The birth rate and the death rate both equal 0.

63.
Carrying Capacity is
a)
the capacity of what one person can carry per day 
b)
how many animals you have in your daily bag limit at the end of the year
c)
wildebeest at a watering hole with zebras
d)
the maximum number of individuals that the environment can support
64.
Diseases may spread more rapidly when an area is crowded, so disease is considered to be a
a)
type I survivorship curve
b)
population crasher
c)
density-dependent limiting factor
d)
population enhancer
65.

A massive tornado

a)

density dependent limiting factor

b)

density independent limiting factor

66.
a)

exponential growth curve

b)

logistic growth curve

67.
a)

logistic growth curve

b)

exponential growth curve

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