Self-study
For pollinating certain crops such as cranberries, bumblebees are far more efficient than honeybees. ████ ██ ███████ █ █████████ █████ ██ █████ ████ █ ███ █████ ███████ ██ █ ███████ █████ ███████ █ ████████ █████████ █████ ████ █ ████ ███████ ████ ███ ██████ █ █████ ███████ ██ ████████
Summary
Bumblebees pollinate a smaller number of plant species in a more limited area than do honeybees. This makes bumblebees more efficient at pollinating some crops, including cranberries.
Strongly Supported Conclusions
Cranberries are more efficiently pollinated by pollinators who focus on a narrow range of species in a small area.
When a pollinator visits many species of plants, it decreases that pollinator’s efficiency in pollinating cranberries.
20.
Which one of the following ██ ████ ████████ █████████ ██ ███ ███████████ ██████
a
If a honeybee ██████ █ █████ ███████ ██ █████ ███████ ████ █ █████████ ███████ ███ ████████ ████ ██ ████ █████████ ████ ███ █████████ ██ ███████████ ███ ███ ██ █████ ████████
Unsupported. This is too broad a claim. The stimulus doesn’t suggest that visiting a small number of plant species makes bumblebees more efficient at pollinating any species—it only makes them more efficient for “certain crops such as cranberries.”
b
The number of █████ ███████ █████ ████ ███████████ ████ █ ███ ██████ ███████ ███ ██████████ ████ █████ ███ ███ ██████████ ████████████
Strongly supported. The difference in efficiency between the two kinds of bee is due to a difference in the geographic range and number of plant species visited by each kind of bee. This suggests that the number of additional plant species visited may affect efficiency.
c
The broader an ████ █ ███ █████ █████ ███ ███████ ███ ██████ ██ █████ ███████ ████ ███ ████ ██ ████ ██ ██████
Anti-supported. Honeybees fly over a broader area than bumblebees do, and yet honeybees also visit a larger number of plant species.
d
Cranberries are typically █████ ████████████ ██ ███████ █████ ████ ██████████ ███ ████ ██████ ████ █████████ ████ ██ ██████
Unsupported. The stimulus doesn’t suggest any reason why bumblebees would be more likely than honeybees to visit cranberries. If anything, honeybees visit a broader area and encounter more kinds of plants than bumblebees do.
e
The greater the ██████████ ██ █ █████ ███ ███████ ████████ ███ ██ ████ ██████ ██ █ █████ █████████ █████ ███ ████ █████████ ████ ███ ███████ ████ ██ ██ ███████████ ████ █████
Unsupported. Bumblebees are more efficient at pollinating cranberries, but there’s nothing to suggest that this is because they’re somehow more likely to visit cranberries. If anything, honeybees visit a broader area and encounter more kinds of plants than bumblebees do.