Question

8 multiple choice 2 points what type of relationship exists between stony marine corals and zooxanthellae? commensalistic predatory parasitic mutualistic 9 multiple choice 2 points of the following ocean zones, which makes up the greatest percentage of the open ocean? disphotic zone euphotic zone aphotic zone photic zone

Explanation:

• For question 8: Stony marine corals and zooxanthellae have a mutualistic relationship. Zooxanthellae provide the coral with food through photosynthesis, and the coral provides a protected environment and nutrients (like carbon dioxide) for the zooxanthellae.
• For question 9: The aphotic zone is the largest part of the open ocean. It is the deep - sea area where little to no light penetrates. The euphotic zone (where light can support photosynthesis) is relatively small, the disphotic zone (twilight zone) is also a smaller intermediate zone, and the photic zone includes the euphotic and disphotic zones but is still much smaller than the aphotic zone.

Answer:

1. mutualistic
2. aphotic zone