Y10 Bio- Marine and Evolution

the area between the high tide and the low tide mark

• benthic zone
• intertidal zone
• pelagic zone
• abyssal zone

Which of the following are examples of biotic factors in the ocean?

• temperature, pressure, light
• light, coral, sand
• predators, coral, cetaceans 
• temperature, predators, depth

Which of these is an abiotic factor in an ocean ecosystem?

• temperature
• prey
• plants
• predators

As the temperature of water increases:

• dissolved oxygen increases

• more people go swimming

• dissolved oxygen is not affected

• dissolved oxygen decreases

Which process does NOT lead to a decrease in the salinity of water?

• runoff from land
• precipitation
• sea ice melting
• evaporation

Which process increases the salinity of water?

• runoff from land
• formation of sea ice
• precipitation
• melting of sea ice

Why doesn’t photosynthesis occur in deep ocean water?

• There is no sunlight.
• There are not enough nutrients. 
• The salinity level of the water is too high.
• The water temperature is too cold.

A change in the inherited characteristics of an organism over time is ________

• evolution.
• development.
• growth.
• ancestry.

Common ancestry relates to evolution because

• evolution only happens when there are common ancestors.
• Common ancestors make evolution happen more quickly.
• evolution can never take place with common ancestors.
• the more two organisms have in common, the more recent is their common ancestor during their evolution.

Which of the following pieces of evolution evidence deals with comparing similar structures in various species?

• fossil record
• comparing embryology
• comparing biochemistry
• comparing anatomy