Spotted Salamanders Lay Eggs in Gelatinous Masses on Twigs Partially

question 2

Multiple Choice

Spotted salamanders lay eggs in gelatinous masses on twigs partially submerged in small ponds or vernal pools. Associated with the eggs, scientists have found a species of alga living in a mutualistic relationship with the developing eggs. What benefit does the salamander receive from this relationship?

• A) The salamander eggs are better camouflaged.
• B) The salamander embryos receive an increased oxygen supply.
• C) The salamander embryos receive an increased carbon dioxide supply.
• D) The salamander embryos receive an increased nitrogen supply.

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