5.1.3 Osmoregulation

• Osmoregulation is the control of water potential in body fluids.
• Osmoregulation is crucial for maintaining homeostasis in organisms.


  True
• Match the environment with the osmoregulatory mechanism used:

  Freshwater ↔️ Excrete dilute urine

  Marine ↔️ Excrete excess salt

  Terrestrial ↔️ Reabsorb water in kidneys
• What is one osmoregulatory challenge faced by freshwater animals?

  Excess water absorption
• What type of urine is produced by terrestrial animals to conserve water?

  Concentrated
• What is one importance of osmoregulation for cell function?

  Proper water balance
• Which osmoregulatory mechanism is used by freshwater animals to excrete excess water?

  Excrete dilute urine
• Marine animals are at risk of dehydration due to their environment.
• Freshwater animals excrete concentrated urine to conserve water.

  False
• Excretory systems regulate water and salt balance to maintain homeostasis.
• Excretory systems help maintain homeostasis
• Osmoregulation maintains a stable internal environment called homeostasis
• Marine organisms drink seawater to conserve water.

  True
• Freshwater fish excrete dilute urine to remove excess water
• Which marine organism uses salt glands to remove excess salt?

  Sharks
• Order the importance of osmoregulation for organisms:

  1️⃣ Ensures proper cell function

  2️⃣ Supports efficient metabolism

  3️⃣ Maintains homeostasis

  4️⃣ Enhances survival in diverse environments
• What is the primary osmoregulatory mechanism in marine organisms?

  Excreting concentrated urine
• What term describes the process by which organisms maintain water and salt balance to thrive in their environment?

  Homeostasis
• What is the primary risk faced by marine organisms in osmoregulation?

  Dehydration
• Match the environment with its osmoregulatory challenge:

  Freshwater ↔️ Tendency to absorb excess water

  Marine ↔️ Risk of dehydration

  Terrestrial ↔️ Water loss via evaporation
• What role do excretory systems play in osmoregulation?

  Maintain water and salt balance
• The excretory systems ensure organisms can thrive in diverse conditions by maintaining proper fluid balance and removing waste products.


  True
• Why is effective osmoregulation crucial for water balance in organisms?

  Maintains homeostasis
• Organisms adapt to environmental changes to maintain homeostasis
• Match the environment with its osmoregulatory mechanism:

  Freshwater ↔️ Excrete dilute urine

  Marine ↔️ Excrete concentrated urine

  Terrestrial ↔️ Reabsorb water in kidneys
• Efficient metabolic processes depend on maintaining optimal water potential
• Efficient metabolic processes depend on optimal water potential
• What does effective osmoregulation enhance in organisms?

  Ability to thrive in diverse environments
• What water balance challenge do marine animals face?

  Risk of dehydration
• What is the role of excretory systems in osmoregulation?

  Maintain water and salt balance
• Osmoregulation is essential for maintaining homeostasis and proper cell function.


  True
• What type of urine do freshwater fish excrete to maintain water balance?

  Dilute urine
• What do freshwater organisms excrete to remove excess water?

  Dilute urine
• How do marine fish excrete excess salt?

  Specialized salt glands
• Terrestrial organisms excrete concentrated urine to minimize water loss.
• Marine fish like sharks excrete concentrated urine and salt through specialized glands.


  True
• What type of urine do freshwater fish excrete?

  Dilute urine
• What environmental factors affect osmoregulation?

  Water availability, salt concentration, temperature
• Marine organisms enhance their salt excretion mechanisms when environmental salinity increases.
• Environmental adaptations in osmoregulation allow organisms to maintain internal stability despite external changes.


  True