Exam 11: The Living Ocean

Phytoplankton use which of the following to control their buoyancy?

Going from the surface (more light) to depth (less light), the light zones in the ocean are referred to as ________.

Organisms that can produce energy from inorganic compounds and also consume other organisms are best referred to as ________.

The swim bladder of a fish ________.

At the level of species, the ocean is much less diverse than the terrestrial environment, with only approximately ________ percent of the total known species.

The richness and variety of life found on our planet, including the oceans, is referred to as ________.

Organisms that rely directly or indirectly on sunlight for energy include all of the following except ________.

Which zone is more likely to undergo seasonal changes?

Both light energy and inorganic nutrient concentrations are highest in the surface waters and decrease with depth.

As a rule of thumb, a 10-fold increase in the abundance of an organism is associated with ________ in size.

All phytoplankton and seaweeds require ________ such as nitrogen and phosphorus.

Plants are considered autotrophs.

Two organisms that exhibit similar lifestyles and look nearly identical, but are not closely related, may be ________.

Prokaryotes and eukaryotes are different in all of the following except ________.

Even when the supply of inorganic nutrients to the surface is high, due to for example upwelling, the absolute concentration of nutrients in the surface may still be low.

The following are adaptations to light (or its absence) in the dysphotic zone of the oceans except ________.

Bioluminescence is thought to be used for ________.

To maintain their bodies' water balance, marine fish ________.

All bacteria are heterotrophs.

Bony fish maintain a fluid balance by ________.