WorksheetsBiology Unit 1 Review: Population Ecology
Total questions: 21
Worksheet time: 21mins
What do we call the part of the graph where the line starts to flatten out?
carrying capacity
logistical growth
exponential growth
Which line represents a population without a limiting factor?
blue
red
Which line represents a population with a limiting factor?
blue
red
Where does most of the energy on Earth come from?
plants
the sun
animals
mushrooms
Place the energy in the correct order from the bottom of the pyramid to the top.
100 kg, 10000 kg, 1 kg
1 kg, 10 kg, 100 kg, 1000 kg
1000 kg, 100 kg, 10 kg, 1 kg
10 kg, 100 kg, 1000 kg, 1 kg
What would happen if producers were removed from this food web?
primary consumers would become primary producers
Hunger Games
there would not be anything for primary consumers to eat, so everything would start to die.
nothing
Which of the following organisms is a pioneer species?
oak trees
flowering plants
lichens
shrubs
Primary succession begins in an area lacking ________.
rocks
soil
water
volcanos
Match the definition to the correct term. Type of ecological succession in which plants and animals recolonize an area after a major disturbance.
Primary Succession
Secondary Succession
Which of the following is an example of a climax community?
new growth starting from scratch
mainly flowering plants and shrubs
pines and other evergreens
species highly diverse
What statement best defines ecological succession?
The regular progression of species replacement in an environment
All of the nonliving factors of an ecosystem
The ability of an organism to survive in an ecosystem
The number of different species living in an ecosystem
A fire partially destroys a temperate deciduous forest. In the following spring, small mosses and low growing plants are observed growing amongst the burned trees and former underbrush. This is an example
of —
primary succession
diversity
climax community
secondary succession
Primary succession could potentially begin in which of the following environments?
A mountainside that has been clear-cut for logging
A field covered with a flow of lava for an extended period of time
A large plain used for cattle grazing during the past 20 years
A forest that has been destroyed by two wildfires
The first living things to grow successfully in a newly formed rock formation are called —
parasites
pioneer species
heterotrophs
climax species
Which of these would be an immediate result of an increase in the number of producers in an ecosystem due to additional nutrient inputs?
The overall rates of decomposition would increase as well.
Predation levels on herbivores would reach new levels.
Genetic drift would occur more often at the consumer level.
There would be an increase in the amount of available energy.
The nitrogen cycle is shown in the diagram above. What process is responsible for returning the nitrogen to the air?
Transpiration
Nitrogen-fixation
Deamination
Denitrification
What does the illustration depict?
food chain
pyramid of numbers
pyramid of energy
pyramid of biomass
Which of the following food chains correctly lists a squirrel as a primary consumer?
Acorn → Squirrel → Bobcat
Bobcat → Squirrel → Butterfly
Seeds → Squirrel → Bobcat → Wolf
Flower → Lizard → Squirrel → Bobcat
Nuts → Squirrel → Coyote → Mountain lion
Which organism is consuming the highest level of biomass in regards to this pyramid?
frog
bear
deer
raccoon
Which of these environmental changes can impact the stability of an ecosystem? (you can select more than one answer)
A decrease in primary productivity
An increase in foraging for food
An increase in the available habitat
A decrease in nutrient recycling
A linear representation of the energy flow in an ecosystem is called —
a food chain
a food web
a trophic level
a food pyramid
