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Populations, Communities and Ecosystems

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10 Biology Quiz on Populations, Communities and Ecosystems, created by J Will on 01/05/2016.
J Will
Quiz by J Will, updated more than 1 year ago
J Will
Created by J Will almost 8 years ago
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Resource summary

Question 1

Question
Which of the following increases the size of a population (check all that apply)
Answer
  • Emigration
  • Immigration
  • Mortality
  • Natality

Question 2

Question
Which of the following decreases the size of a population (check all that apply)?
Answer
  • Emigration
  • Immigration
  • Mortality
  • Natality

Question 3

Question
A volcano erupting causes the birds on an island to have to leave to find a new home. This would be an example of ___________?
Answer
  • Emigration
  • Immigration
  • Mortality
  • Natality

Question 4

Question
If the rate of immigration and emigration of population are the same, what would cause the population to continue to increase in size?
Answer
  • If the mortality is greater than the natality
  • If the natality is greater than the mortality
  • If the mortality and natality are equal
  • This population could not increase

Question 5

Question
In a lab experiment, doors that swing outward only allowed mice to enter a population but not to leave it. What could cause an increase in the population?
Answer
  • Emigration
  • Immigration
  • Mortality
  • Natality

Question 6

Question
If a country had a higher death rate than a birth rate, what would explain a continued increase in population?
Answer
  • Emigration
  • Immigration
  • Mortality
  • Natality

Question 7

Question
What factor usually is responsible for limiting the size of each population in the biosphere
Answer
  • The carrying capacity of the ecosystem
  • The density of decomposers
  • The increase in annual natality
  • The opportunity to locate mates

Question 8

Question
The biotic component of an ecosystem would be __________
Answer
  • Climate
  • Temperature
  • Community
  • Water

Question 9

Question
Abiotic factors include all of the following except:
Answer
  • Weather
  • Food
  • Space
  • Water

Question 10

Question
Termites eat wood but cannot digest it. Microorganisms that live in the termites’ digestive tract digest the wood. The microorganisms cannot live outside the termites’ body. This is an example of:
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 11

Question
The cricket may live in a gopher burrow along with the gopher. Each animal is harmless to the other.
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 12

Question
A lamprey eel attaches itself by a sucker to a fish and feeds on blood from a fish.
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 13

Question
Garden seeds that sprout only inches apart cause the plants to be crowded and their growth and fruiting reduce.
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 14

Question
Barnacles attach themselves to a whale. The barnacles benefit but the whale is unharmed.
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 15

Question
Tapeworms live in animal intestines and grow new segments as they absorb digested foods. An animal may become undernourished as tapeworm segments are lost with eliminated wastes and the tapeworm grows more new segments
Answer
  • Commensalism
  • Competition
  • Mutualism
  • Parisitism

Question 16

Question
What constitutes a famine?
Answer
  • Individuals consume more calories than their bodies use.
  • The number of people in an area increases at a faster rate than food supplies.
  • People consume enough calories but fail to take the necessary vitamins.
  • Water quality is so poor that life threatening diseases are common.

Question 17

Question
What constitutes malnutrition?
Answer
  • Individuals consume more calories than their bodies use.
  • The number of people in an area increases at a faster rate than food supplies.
  • People consume enough calories but fail to take the necessary vitamins.
  • Water quality is so poor that life threatening diseases are common.

Question 18

Question
Through which pathway would the most energy be available to humans?
Image:
25d1b64a-7d20-4ad8-a1f8-a0d5ecdd78d9 (image/jpeg)
Answer
  • Pathway I
  • Pathway II
  • Pathway III
  • They are all the same

Question 19

Question
Through which pathway would the least energy be available to humans?
Image:
f1051f04-3d9e-4c3d-a8e0-49a9af66eca2 (image/jpeg)
Answer
  • Pathway I
  • Pathway II
  • Pathway III
  • They all have the same amount of energy available to humans

Question 20

Question
Which organisms are producers?
Answer
  • All of the following
  • Grasses and trees
  • Bacteria and mushrooms
  • Mice, rabbits, and deer

Question 21

Question
Which organisms can be considered consumers?
Answer
  • All of the following
  • Bacteria and Fungi
  • Grasses and Clovers
  • Insects, mice and rabbits

Question 22

Question
Which organisms convert light energy to chemical energy via photosynthesis?
Answer
  • All of the following
  • Bacteria and fungi
  • Grasses and Clovers
  • Insects, mice and rabbits

Question 23

Question
Gross primary productivity in an ecosystem is the:
Answer
  • Energy lost by daily activity of producers in the community
  • Food energy available to consumers
  • Growth of the community
  • Sunlight energy converted by producers to chemical energy

Question 24

Question
Net primary productivity in an ecosystem is defined as:
Answer
  • Energy lost by daily activity of producers in the community
  • Food energy available to consumers
  • Growth of the community
  • Light energy converted by producers to chemical energy

Question 25

Question
A cow eats only grass making it a(n)
Answer
  • Herbivore
  • Carnivore
  • Omnivore
  • Scavenger

Question 26

Question
A vulture eats a dead animal which makes it a(n)
Answer
  • Herbivore
  • Carnivore
  • Omnivore
  • Scavenger

Question 27

Question
A bear eats both meat and berries, making it a(n)
Answer
  • Herbivore
  • Carnivore
  • Omnivore
  • Scavenger

Question 28

Question
A shark has a diet that consists of only fish
Answer
  • Herbivore
  • Carnivore
  • Omnivore
  • Scavenger

Question 29

Question
A butterfly migrates to a new area by flying
Answer
  • Active Dispersal
  • Passive Dispersal

Question 30

Question
A river moves seeds to an new location
Answer
  • Active Dispersal
  • Passive Dispersal

Question 31

Question
A monkey moves the seed of a mango tree to a new location
Answer
  • Active Dispersal
  • Passive Dispersal

Question 32

Question
The difference between the ecosystem and its community of organisms is the:
Answer
  • Decomposers of the ecosystem
  • Food web of the ecosystem
  • Physical environment of the ecosystem
  • Producers of the ecosystem

Question 33

Question
Which of these is a community relationship?
Answer
  • River turtles and snails eat tape grass
  • Turtle eggs are buried on the river bank
  • Tape grass clogs the water current in a river
  • Snails are concealed among rocks in a river

Question 34

Question
Which organisms lose heat energy in respiration?
Answer
  • All of the above
  • Bacteria and fungi
  • Grasses and clover
  • Insects, mice and rabbits

Question 35

Question
An herbivore is also called a:
Answer
  • Decomposer
  • Green plant
  • First-order consumer
  • Second-order consumer

Question 36

Question
The food relationships diagrammed do not include the ecosystem’s;
Image:
ebb8c59e-68d0-488d-9d79-7c6570cda3d4 (image/jpeg)
Answer
  • Consumers
  • Decomposers
  • Predators
  • Producers

Question 37

Question
If the snake population declines, one result probably will be:
Image:
e48ef8a2-487d-498f-8d7b-8e5b9f69ae9f (image/jpeg)
Answer
  • Competition between spiders and salamanders
  • Decrease in centipede density
  • Emigration of the salamanders
  • Increase in salamander density

Question 38

Question
A pyramid of biomass means that the mass of:
Image:
61bae992-78bc-4e17-92c8-9aa8e7d0378b (image/jpeg)
Answer
  • Consumers is greater than producers
  • Decomposers is greater than consumers
  • Decomposers is greater than producers
  • Producers is greater than consumers
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