Behavior in fishes and other marine organisms, such as vertical migration, countershading, and breeding cycles are in responce to?
Sunlight.
choices of responses to:
a. Penetration of light in the sea
b. Temp changes with depth
c. seasonal changes of salinity
d. pressure increases with depth.
The correct answer is a. Penetration of light in the sea.
Fishes and other marine organisms exhibit various behavioral adaptations in response to the penetration of light in the sea. Let's take a closer look at each of the options:
a. Penetration of light in the sea: Light behaves differently as it enters the water, with the intensity and color spectrum changing with depth. Many marine organisms, including fish, adjust their behavior to optimize their survival in relation to light. For example, they may undergo vertical migration to different depths based on the availability of light and their specific needs.
b. Temperature changes with depth: While temperature can also influence behavior, it is not directly related to the specific examples given in the question. Temperature variations in the ocean can affect the distribution and behavior of marine organisms, but it does not play a significant role in behaviors such as countershading, vertical migration, or breeding cycles.
c. Seasonal changes of salinity: Salinity, or the saltiness of the water, can impact the behavior of marine organisms, but it is not directly linked to the examples mentioned. Seasonal changes in salinity can result from factors like rainfall, river runoff, and evaporation, but they do not play a significant role in behaviors such as countershading, vertical migration, or breeding cycles.
d. Pressure increases with depth: While pressure does increase with depth in the ocean, it is not the primary factor driving the behaviors mentioned in the question. Pressure adaptations in marine organisms are typically related to physiological features, such as the ability to withstand high-pressure environments, rather than behavioral responses like vertical migration or countershading.
Therefore, the most accurate answer is a. Penetration of light in the sea, as it directly affects behaviors such as vertical migration, countershading, and breeding cycles in fishes and other marine organisms.