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RossMarine unicellular organisms typically have stable osmolarity in their surrounding environment, reducing the need for contractile vacuoles to regulate water balance. Additionally, many marine organisms have evolved other mechanisms to regulate osmotic balance, such as ion transport mechanisms.
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Marine protoza do not have contractile vacule?
That's correct, marine protozoa do not have contractile vacuoles. Contractile vacuoles are typically found in freshwater protozoa and serve to regulate water balance by expelling excess water from the cell. Marine protozoa have adaptations to maintain water balance in a high-salt environment without the need for contractile vacuoles.
Contractile vacuole are not found in marine water forms why?
Marine water has a higher concentration of salt compared to fresh water, which creates a more stable osmotic environment for marine organisms. As a result, marine organisms do not need contractile vacuoles to regulate water balance and remove excess water, as they do not face the same risk of swelling and bursting due to osmotic pressure.
How osmoregulation is carried out in a named protozoan?
Osmoregulation in protozoans like Paramecium is carried out through contractile vacuoles. These organelles collect excess water and expel it from the cell to maintain osmotic balance. The contractile vacuoles help prevent the cell from bursting due to excessive water intake.
Why would you expect a freshwater amoeba to be more likely to ha contractile vacuoles than marine amoeba would?
Marine amoebae live in a saltwater environment. If the vacuoles take in too much salt, it'll suck all the liquidy stuff out of the amoeba itself. Freshwater amoebae are in a freshwater environment so they don't have to worry about that.
Why would you expect a freshwater amoeba to be more likely to have contractile vacuoles than a marine amoeba?
A freshwater amoeba is more likely to have contractile vacuoles because it needs a mechanism to regulate its internal water balance in a hypoosmotic environment like freshwater where water constantly enters its cell by osmosis, whereas a marine amoeba inhabiting a hyperosmotic environment does not face the same water influx issue.
