AnswersHVA 26-27 IM Biology ALab: Diffusion Across a Semi-permeable Membrane

Relationships Among Organisms Answers

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Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?

A
mutualism
B
commensalism
C
predation
D
coevolution
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Which is most likely to help an introduced species become invasive?

A
a low reproductive rate
B
big difference between original and new habitats
C
a strong predator in new habitat
D
great tolerance to a wide range of conditions
3

Which term refers to a change in one species that results from a change in another species that it interacts with?

A
coevolution
B
commensalism
C
symbiosis
D
interaction
4

The pine borer beetle is a parasite to the pine tree. What would most likely happen to the pine tree population if the beetle population decreased?

A
decrease
B
increase
C
become extinct
D
stay the same
5

Which type of symbiotic relationship is described in the following scenario?Termites are unable to digest some plant materials (fiber). Termite stomachs contain bacteria that digest the fiber in wood for the termites. In turn, the bacteria are provided with a hospitable environment to carry out their life processes.

A
commensalism
B
mutualism
C
parasitism
D
competition
6

What is the name that is given to a symbiotic relationship in which both species benefit?

A
commensalism
B
mutualism
C
parasitism
D
predation
7

Legumes, a type of plant, require Rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen. Rhizobia use the legumes for food. What would most likely happen to the legume population if Rhizobia suddenly became extinct?

A
become extinct
B
learn to fix nitrogen
C
benefit in the long run
D
stay the same
8

Why are invasive species dangerous to the environment?

A
They pollute the environment.
B
They are always predators.
C
They threaten biodiversity.
D
They bring abiotic factors.
9

As human travel increases, the number of introduced species likely

A
decreases.
B
increases.
C
stays the same.
D
is eliminated.
10

The Remora remora, or suckerfish, often attaches to larger organisms such as sharks and whales through the use of a specialized sucker. This interaction enables the remora to feed on the scraps of food that remain from the larger organism’s meal. Typically, the larger organism is unaware of, and unaffected by, the remora. Which type of interaction occurs between the remora and its host organism?

A
mutualism
B
commensalism
C
parasitism
D
competition

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