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
Nadusha1986 [10]
3 years ago
9

What problem is faced by organisms that live in fresh water?

Biology
1 answer:
muminat3 years ago
7 0

Answer:

A. Their bodies tend to take in too much water.

Explanation:

Osmoregulation is the maintenance of osmotic concentration inside the body cells and in the extracellular fluid by controlling the amount of water and salts.  Organisms living in water can be divided into two groups: Some are osmoconformers which change the osmolarity of body fluids with respect to the surrounding medium. Some are osmoregulators which do not allow change in internal osmolarity and try to maintain it by various means.

If as osmoregulator is placed in fresh water environment then their body is hypertonic to their environment. Osmosis will occur which is the movement of water from low solute to high solute concentration. Thus the problems faced by such organisms would be:

- Entry of excess water

- Loss of body salts to outside.

Adaptations in such organisms would be:

- Body cover such as scales or adipose covers

- They do not drink more water

- Excess water is eliminated as dilute urine

- Special cells called ionocytes or chloride cells help in active uptake of sodium ions and chloride ions.

You might be interested in
Which of the following is most likely to happen to a liquid substance when the temperature is increased?
Marta_Voda [28]

Answer

:When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation). ... When the pressure exerted on a substance increases, it can cause the substance to condense.

6 0
3 years ago
What structure is highly vascular and closely adheres to the surface of the brain?
tatyana61 [14]

Pia mater

<span>Pia mater is a highly vascular tissue that cleaves firmly to the surface of the brain and spinal cord. Pia mater protects the central nervous system by nourishing the brain and allowing blood vessels to pass through it. The inflammation of the pia mater can lead to meningitis</span>




6 0
3 years ago
Read 2 more answers
Do you believe alien's or external life exist outside of our world? why?
Mademuasel [1]

Answer:

This is not a question we can answer, this is a question only you can answer because it is asking for your personal belief on wether alien's exist outside of earth or not.

Explanation:

4 0
3 years ago
Read 2 more answers
How are niche and habitat related?
Vedmedyk [2.9K]

Answer:

A niche is a way that a population uses the living and nonliving resources of its habitat.

Explanation:

A niche is the role a population has in it's habitat, and the second option is the best one that matches.

5 0
3 years ago
Which is a characteristic of cancer cells
rjkz [21]

Answer:

<h2>A.controlled cell division </h2>

Explanation:

Thankyou

8 0
3 years ago
Other questions:
  • Which of the following methods brings about cell lysis due to cavitation induced by rapid localized pressure changes?
    6·1 answer
  • Explain the significance of the high heat capacity of water.
    7·1 answer
  • How i will successfull​
    9·1 answer
  • Which chromosomal change is represented?
    9·1 answer
  • What stage of mitosis do new nuclei form around the chromatin of the two new forming cells
    15·1 answer
  • Vultures and Hyenas are<br><br> herbivores<br> carnivores<br> omnivores<br> scavengers
    9·1 answer
  • Leonardo is explaining the ecological pyramids to his daughter. He tells her that often scientists do not favor pyramid of bioma
    9·1 answer
  • What is a sub-atomic particle?
    11·1 answer
  • What several ways in which invasive species can be introduced? (intentionally or unintentionally).
    13·1 answer
  • What is one positive thing that can happen after a hurricane?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!