BIOLOGY 101 FINAL EXAM 2026-2027
QUESTIONS AND CORRECT ANSWERS GRADED
A+
Which mode of natural selection is being exerted in the following scenario: In a
population of plants resistance to a type of fungal blight is a variable trait (with a
normal distribution). The blight kills 80% of the plants, leaving only the most
resistant to survive.
Directional.
Which abiotic factor(s) is/are responsible for the presence of different seasons on
our planet?
The Earth's tilt.
Which biome is comprised of a productive area where rivers meet the ocean?
Estuary
Which key abiotic climate factor(s) distinguish terrestrial biomes?
Precipitation and Temperature
Which biome does not include fire as a natural part of its cycle?
Coniferous forest.
,In the figure above, which biome is represented by "e"?
Coniferous forest
In the figure above, which biome is represented by "d"?
Broadleaf forest
In the figure above, which biome is represented by "a"?
Desert
Bark beetles feed under the bark of trees (bark beetles and trees)
Herbivory
Beetles carry mites with them; the mites disembark at a food source and prey on
maggots which are the beetle's competitors (mites and beetles)
Mutualism
Beetles carry mites with them; the mites disembark at a food source and prey on
maggots which are the beetle's competitors (mites and maggots)
Predation
,Which term best defines this organization: All the organisms/ species living in a
particular area and the physical components with which the organism interact...
Ecosystem
I design an experiment to test whether or not fertilizer has an effect on the growth
of dandelions. My hypothesis is that dandelions in soil to which fertilizer is added,
will produce more biomass. What is my independent variable in this experiment?
Presence or absence of fertilizer
What is an example of Aposematism?
A bright red beetle sitting on a green leaf.
A black and yellow stinging wasp that buzzes as it flies.
Which model of natural selection is being exerted in the following scenario: In a
population of fish adult body size is a variable trait (with a normal distribution).
The smallest adult fish are cannibalized by their cohorts and the largest adult fish
are visible to a bird predator and tend to be preyed upon frequently.
Stabilizing
Osprey and grizzly bears both feed on salmon as they run upstream (Osprey and
Salmon)
, Predation
As the seeds of day lily fall to the ground Harvester ants carry them off to their
burrows for food (ant and lily)
Herbivory
The relationship between coral and dinoflagellates (from your book)
Mutualism
What does "the rule of tens" tell us about energy passing through a food chain?
That 90% of the energy is lost at each trophic level
Which forms of Carbon, Phosphorus, and Nitrogen are usable to plants?
Carbon dioxide, Phosphate ions and Ammonium.
Which elements have abiotic reservoirs in the Earth's atmosphere?
Nitrogen and Carbon.
What is measured in the context of Net Primary Production?
Biomass/area/time
QUESTIONS AND CORRECT ANSWERS GRADED
A+
Which mode of natural selection is being exerted in the following scenario: In a
population of plants resistance to a type of fungal blight is a variable trait (with a
normal distribution). The blight kills 80% of the plants, leaving only the most
resistant to survive.
Directional.
Which abiotic factor(s) is/are responsible for the presence of different seasons on
our planet?
The Earth's tilt.
Which biome is comprised of a productive area where rivers meet the ocean?
Estuary
Which key abiotic climate factor(s) distinguish terrestrial biomes?
Precipitation and Temperature
Which biome does not include fire as a natural part of its cycle?
Coniferous forest.
,In the figure above, which biome is represented by "e"?
Coniferous forest
In the figure above, which biome is represented by "d"?
Broadleaf forest
In the figure above, which biome is represented by "a"?
Desert
Bark beetles feed under the bark of trees (bark beetles and trees)
Herbivory
Beetles carry mites with them; the mites disembark at a food source and prey on
maggots which are the beetle's competitors (mites and beetles)
Mutualism
Beetles carry mites with them; the mites disembark at a food source and prey on
maggots which are the beetle's competitors (mites and maggots)
Predation
,Which term best defines this organization: All the organisms/ species living in a
particular area and the physical components with which the organism interact...
Ecosystem
I design an experiment to test whether or not fertilizer has an effect on the growth
of dandelions. My hypothesis is that dandelions in soil to which fertilizer is added,
will produce more biomass. What is my independent variable in this experiment?
Presence or absence of fertilizer
What is an example of Aposematism?
A bright red beetle sitting on a green leaf.
A black and yellow stinging wasp that buzzes as it flies.
Which model of natural selection is being exerted in the following scenario: In a
population of fish adult body size is a variable trait (with a normal distribution).
The smallest adult fish are cannibalized by their cohorts and the largest adult fish
are visible to a bird predator and tend to be preyed upon frequently.
Stabilizing
Osprey and grizzly bears both feed on salmon as they run upstream (Osprey and
Salmon)
, Predation
As the seeds of day lily fall to the ground Harvester ants carry them off to their
burrows for food (ant and lily)
Herbivory
The relationship between coral and dinoflagellates (from your book)
Mutualism
What does "the rule of tens" tell us about energy passing through a food chain?
That 90% of the energy is lost at each trophic level
Which forms of Carbon, Phosphorus, and Nitrogen are usable to plants?
Carbon dioxide, Phosphate ions and Ammonium.
Which elements have abiotic reservoirs in the Earth's atmosphere?
Nitrogen and Carbon.
What is measured in the context of Net Primary Production?
Biomass/area/time
