Which Statement Best Sums Up the Relationship Between Density of the Herbivorous

question 3

Multiple Choice

Which statement best sums up the relationship between density of the herbivorous snail Littorina and the diversity of algae in its habitat?

• A) Highest diversity when Littorina are abundant, in all habitats
• B) Highest diversity when Littorina are rare, in all habitats
• C) Highest diversity when Littorina densities are intermediate, in all habitats
• D) Highest diversity in tidepools when Littorina are rare, but in emergent habitats when Littorina densities are intermediate
• E) Highest diversity in tidepools when Littorina densities are intermediate, but in tidepools when Littorina are rare