1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
RSB [31]
3 years ago
8

Chum salmon (oncorhynchus keta) are born in freshwater environments and then migrate to the sea near the end of their lives, the

y return to the freshwater stream where they were born to spawn. in freshwater, water constantly diffuses into the body and ions are lost from the body. in salt water, body water diffuses out of the body and excess ions are gained from the water. a salmon's gills have special cells to pump salt in or out of the body to maintain homeostasis. in response to the salmon's moves between freshwater and salt water, some cells in the gills are produced and others are destroyed. these changes made in the cells of the gills during the lifetime of an individual salmon are an example of?a. trade offb. evolutionc. acclimatizationd. adaptation
Biology
2 answers:
Vadim26 [7]3 years ago
7 0

Answer:

C.

Explanation:

If an organism has ability to tolerate and survive  the effects of  varied  environmental factors  in its environments, by adjusting  its  body systems to  the fluctuations in these factors  to  improve its performance for  survival , such organism is said to undergo acclimatization.

it usually occur over a short period of time, and it is reversible.

These varied or changing environmental factors are  temperature,humidity, pH, water current etc, And the mechanisms for  adjustment of the body systems(homeostasis)  to tolerate and  adjust to  theses factors   may involve changes in the body structure, biochemical reactions, or behaviours.

Note it is different from adaptation, which  takes longer time, which  may be permanent and therefore affects the Genotype of the organisms.Acclimatization in most cases affects phenotype of the organism involved.

Tcecarenko [31]3 years ago
6 0

Answer:

c. Acclimatization

Explanation:

<u>Acclimatization</u> : Various physiological readjustments and compensatory mechanisms in body that reduces the effects of hypoxia in permanent residents at high altitude. These are basically the respiratory and hematopoetic adjustments to long-term move to high altitude.

As the Chum Salmon (oncorhynchus keta) are born in freshwater water constantly diffuses into the body and ions are lost from the body while in the sea water, they lose water.

As alot of changes are occrun in the cells of the gills of chum salmon, that is acclimatization as various physiological readjustments are being made.

You might be interested in
Gene therapy is a way doctors can treat a disease by inserting a healthy gene into a patient's cells, instead of using drugs or
LekaFEV [45]

The answer is; C

Gene therapy is still not considered safe and has not been approved for humans, especially due to errors in inserting of DNA at the target site and also random relapse of the DNA from its inserted site. Gene therapy, however, can be sanctioned when its benefits outweigh its risks such as in terminally ill patients - with the approval of the patient and local relevant policies/authorities. Gene therapy, today, is being tested with innovative tools called CRISPR/Cas9.


5 0
3 years ago
Read 2 more answers
How long can a person live without food but with water?
belka [17]
For about three weeks
4 0
3 years ago
Read 2 more answers
Why can’t muscles function individually
Leni [432]
Because they only pull not push and we need something to push
8 0
3 years ago
Read 2 more answers
Which statement is TRUE regarding dopamine? O High levels of dopamine are related with symptoms of autism O Low levels of dopami
Musya8 [376]

Answer:

Low levels of dopamine are related with symptoms of Parkinson's disease.

6 0
2 years ago
Can someone help me with this asap
marshall27 [118]

Answer:

<u>The number of caterpillars would increase.</u>

Explanation:

I'm sure

8 0
3 years ago
Other questions:
  • generally speaking, how does the age of geologic structures in florida compare with the age of those in colorado?
    12·2 answers
  • Please help!! Will name brainliest!!!
    5·2 answers
  • ______ and ______ properties can be used to classify and identify matter.
    11·2 answers
  • An organism's genetic information is stored within the sequence of
    8·1 answer
  • Prokaryotic and Eukaryotic cells differ in that _______
    13·1 answer
  • Which if the following are folds of mucosa only?
    15·2 answers
  • How does abrasion shape a shoreline?
    7·2 answers
  • A localized group of organisms belong to the same species is called a population explain how and why
    9·1 answer
  • PLEASE HELP FOR LOTS OF POINTS!!!!
    5·1 answer
  • In the paragraph of the text, what did President Obama try to persuade people to do? Do you think this could also be applied in
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!