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Ecology Review

Total questions: 66

Worksheet time: 41mins

Name
Class
Date
1.

What is a population?

a)

One individual member of a species

b)

a group of individuals of the same species that live in the same area

c)

a community of different species and their environment

2.

Which is an example of an ecosystem?

a)

An area of cold climate and communities of different species

b)

one elk

c)

a group of elks living together in the same area

d)

elks, snow rabbits, and owls living in the same area

3.

Which definition best fits the term BIOTIC?

a)

The study of the interactions between animals and their environment

b)

Factors in the environment that are considered not alive

c)

Factors in the environment that are considered living or the remains of living things

4.

One species benefits, the other is unaffected

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

5.

Tapeworms reside in human intestine and take nutrients from the human

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

6.
An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:
a)

Predator

b)

Autotroph

c)

Producer

d)

Decomposer

7.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

8.
The arrows in a food chain or web represents what?
a)

They point to the organism that is being eaten.

b)

It shows how sunlight flows within an ecosystem.

c)

They show what direction the energy is flowing between organisms. 

d)

They represent how water is transferred within a habitat.

9.

The populations of which organisms will most likely increase as a result of a disease that suddenly reduced the population of Texas horned lizards?

a)

Grasses and ants

b)

Ants and grasshoppers

c)

Grasshoppers and Texas Cottonmouths

d)

Texas cottonmouths and red shouldered hawks

10.
What are plants called in a food chain?
a)

Producers /Autotrophs

b)

Consumers /Heterotrophs

c)

Decomposers

d)

Scavengers

11.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
12.

Why might an organism have more than one arrow coming FROM them in a food web?

a)

More than one organism may eat them.

b)

They may eat more than one other organism.

c)

This organism gets its energy from multiple sources.

13.
What is missing from this food chain?
Grass > Grasshopper > Bird > Snake
a)
Producer
b)
Primary Consumer
c)
Secondary Consumer
d)
Decomposer
14.

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

a)

it increases

b)

it decreases

c)

it remains the same

15.
An area where an organism finds food, shelter and water in a specific arrangement
a)
niche
b)
biosphere
c)
biome
d)
habitat
16.

Ecology is the study of .

a)

life

b)

Interactions among organisms and their environments

c)

interactions among organisms

d)

how traits are passed from parents to offspring

17.

Which of the following is abiotic?

a)

A tree in a forest.

b)

Wood from the tree on the forest floor.

c)

A termite on the tree.

d)

The soil the tree is growing in.

18.

What is made up of all the populations in an area?

a)

Habitat

b)

Niche

c)

Community

d)

Ecosystem

19.

An ongoing relationship in which one organism benefits and the other is harmed.

a)

A. Predator & Prey

b)

B. Mutualism

c)

C. Commensalism

d)

D. Parasitism

20.

There are birds that eat the food from between the teeth of alligators, leaving the alligators with clean teeth and the birds with a meal. What type of ongoing relationship is this?

a)

A. Predator & Prey

b)

B. Mutualism

c)

C. Commensalism

d)

D. Parasitism

21.

An organism’s habitat is where it lives.

a)

True

b)

False

22.

Tell if the item is an abiotic factor or biotic.....

Water

a)

Abiotic

b)

Biotic

23.

Tell if the item is an abiotic factor or biotic.....

TREE

a)

Abiotic

b)

Biotic

24.

Tell if the item is an abiotic factor or biotic factor.....

Tree Frog

a)

Abiotic

b)

Biotic

25.

Tell if the item is an abiotic factor or biotic.....

Sandy Soil

a)

Abiotic

b)

Biotic

26.

The living world is organized in levels. Biotic and abiotic factors also can be arranged into levels of biological organization. Put the words below in order from the least complex to the most complex

a)

Community, Organism, Biome, Population, Biosphere, Ecosystem

b)

Organism, Population, Community, Ecosystem, Biome, Biosphere

c)

Organism, Biome, Population, Community Biosphere, Ecosystem

27.
Which of the following organisms are autotrophic?
a)
Flower
b)
Rabbit
c)
Wolf
28.
What is maximum number of organisms that can live in one population in an ecosystem over time?
a)
Limiting factor
b)
Ecological Succession
c)
10% Rule
d)
Carrying Capacity
29.
What starts every food chain or food web?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
The Sun
30.
An individual belonging to a specific species
a)
Biotic
b)
Community
c)
Organism
d)
Reptile
31.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
32.
An area where an organism finds food, shelter and water in a specific arrangement
a)
niche
b)
biosphere
c)
biome
d)
habitat
33.
The living part of an ecosystem
a)
Biotic
b)
Abiotic
c)
Mother Earth
d)
Flowers
34.
Two or more members of a particular species living and interacting in the same area
a)
Community
b)
Population
c)
Organisms
d)
Biosphere
35.
Different populations living and interacting with each other in the same area
a)
Biome
b)
Ecosystem
c)
Community
d)
Niche
36.
An illustration that uses arrows to show the many possible directions in which matter and energy can pass through the organisms in an ecosystem.
a)
Food chain
b)
Food web
c)
Energy Pyramid
d)
Succession Map
37.
Organisms that obtains its energy from abiotic sources, such as sunlight or inorganic chemicals
a)
Autotroph
b)
Heterotroph
c)
Omnivore
d)
Carnivore
38.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)
is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
d)
is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
39.
New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to
a)
 reduce the use of nonrenewable resources.
b)
increase the rate of air pollution.
c)
reduce the rate of homeostasis in organisms.
d)
 cause a loss of biodiversity in the rain forests.
40.
What is the original source of almost all energy in most ecosystems?
a)
carbohydrates
b)
sunlight
c)
water
d)
carbon
41.

What is the biggest reason humans are negatively impacting the environment?

a)

overhunting

b)

pollution

c)

increasing human population

d)

invasive species

42.

________ refers to the variety of life.

a)

succession

b)

industrialization

c)

biodiversity

d)

carrying capacity

43.

low biodiversity means the ecosystem is

a)

more stable

b)

less stable

44.

Which of the following is not an action to reduce or repair damage to the environment?

a)

use fossil fuels

b)

recycle

c)

protect habitats and species

d)

pass laws to control pollution, land, hunting and fishing

45.

The arrows most likely represent. . . ..

a)

Energy released from metabolism into the environment as heat

b)

Oxygen released from metabolism produced by cellular respiration

c)

The absorption of energy from the environment that has been created

d)

The transport of glucose away from the organism through photosynthesis

46.
1. What makes a species invasive?
a)
Moving to a new ecosystem and taking resources from natives 
b)
Not having papers
c)
Species that can't adapt
d)
Plants that take up too much space
47.

Living things are made up of units called

a)

DNA

b)

Cells

c)

Homeostasis

d)

Seeds

48.

The number of different plants and animal found within an area. The more varied an ecosystem is, the more stable the ecosystem.

a)

Biodiversity

b)

Homeostasis

c)

Biotic

d)

Biosphere

49.

Organisms, known as producers, that synthesize their own food (glucose) by using the process of photosynthesis.

a)

Autotroph

b)

Heterotroph

c)

Carnivore

d)

Chloroplast

50.

All of the living populations that are found and interact within an ecosystem.

a)

Population

b)

Species

c)

Community

d)

Ecosystem

51.

An organism that feeds exclusively on plant material, example – a deer.

a)

Carnivore

b)

Herbivore

c)

Omnivore

d)

Producer

52.

The most biodiverse and stable stage of ecological succession.

a)

Pioneer Species

b)

Climax Community

c)

Shrubs and Grasses

d)

Predator

53.

Those resources that are unable to be replaced and, once used up,are gone. Fossil fuels are examples of this type of resource.

a)

Renewable Resources

b)

Non Renewable Resources

c)

Sun Energy

d)

Biotic

54.

Organisms that feed exclusively on other animals,example - a fox.

a)

Herbivore

b)

Omnivore

c)

Carnivore

d)

Heterotroph

55.

What would happen within a few months after the formation of a volcanic island?

a)

pioneer species would grow

b)

no pioneer species would grow

c)

trees and large plants would grow

d)

rich, organic soil would be present

56.

Barnacles do not affect whales as they grow, but receive the benefit of a food source. This is

a)

parasitism

b)

mutualism

c)

commensalism

d)

neutralism

57.

These organisms are often not shown in a food chain, but are important for recycling nutrients

a)

producers

b)

decomposers

c)

primary consumers

d)

carnivores

58.

Which event would not cause secondary succession?

a)

forest fire

b)

flooding of a valley

c)

volcanic lava flow

d)

tornado

59.

90% of the energy that gets lost as you move up a food pyramid or chain gets lost as

a)

pollution to the environment

b)

heat to the environment

c)

energy for decomposers

d)

gets recycled

60.

What is the order that plants grow to repopulate the area in primary succession, such as a glacier receding or a volcano covering land with lava?

a)

Lichens → Shrubs → Grasses → Trees

b)

Lichens → tree → shrubs→Grasses

c)

Grasses → Lichens → Shrubs → Trees

d)

Lichens → Grasses → Shrubs → Trees

61.
Uses energy from the sun to make sugars/food for the cell
a)
Mitochondria
b)
Chloroplast
c)
Vacuole
d)
Lysosome
62.

Which biome would have the highest biodiversity?

a)

grasslands

b)

desert

c)

tundra

d)

rainforest

63.

Which of the following is not required for photosynthesis?

a)

carbon dioxide

b)

oxygen

c)

water

d)

radiant energy from sunlight

64.

Photosynthesis creates...

a)

only glucose

b)

only oxygen

c)

glucose and oxygen

d)

glucose and carbon dioxide

65.

In the food web above, a large decrease in the number of rats will cause ____.

a)

an increase in the number of ants, tarantulas, and snakes

b)

an increase in the number of snakes, coyotes, and hawks

c)

a decrease in the number of snakes, coyotes, and hawks

d)

a decrease in the number of cacti and sagebrush plants

66.

Which animal receives the most energy originally produced by the plants in the food web?

a)

rabbit

b)

owl

c)

frog

d)

snake

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