Biology Semester 1 Final Exam

A population of fur seals increased rapidly for almost 20 years and then began to level off as the population reached the carrying capacity. When this population is graphed, it will produce a __.

• straight line
• J-shape
• S-shape
• zig-zag

Tags

NGSS.HS-LS2-1

Which of the following is NOT an example of a limiting factor?

• lack of food
• shortage of water
• disease
• increase in birth rate

Tags

NGSS.MS-LS2-1

Organisms that hunt together and/or help defend each other from predators will probably show a __ distribution pattern.

• uniform
• random
• clumped
• none of these

Tags

NGSS.MS-LS2-2

Which of the following is NOT a sampling technique used by ecologists?

• calculating
• indirect counting
• mark-recapture
• quadrants

There are 150 saguaro cacti plants per square kilometer in a certain area of the Sonoran desert. What method was probably used to estimate this population?

• exact count of each cactus
• quadrants
• mark-recapture
• indirect count of the birds that live in the cacti

A disease resulting in the deaths of one-third of a dense population of rabbits on an island would likely be a

• result of exponential growth
• result of habitat destruction
• density-dependent factor
• density-independent factor

Tags

NGSS.MS-LS2-4

The competitive exclusion principle states that

• two species who share a niche must be closely related
• one species must adapt to sharing resources with the other
• only one population can live in a particular area
• two species cannot occupy the same niche at the same time

Which of the following is NOT likely to be a limiting factor for a sea otter population?

• drought
• food
• disease
• hunting

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The relationship between a flower and the insect that feeds on its nectar is an example of __.

• immigration
• commensalism
• carrying capacity
• mutualism

Tags

NGSS.MS-LS2-2

When organisms move into a new area this is called __.

• emmigration
• immigration
• mutualism
• ecology