What is a feature of an estuarine organism (eg mangroves) that allows it to survive?
(A) High rate of salt excretion
(B) Low rate of osmosis into its cells
(C) High uptake of salt from its environment
(D) Low uptake of oxygen from its environment - HSC - SSCE Biology - Question 9 - 2013 - Paper 1
Question 9
What is a feature of an estuarine organism (eg mangroves) that allows it to survive?
(A) High rate of salt excretion
(B) Low rate of osmosis into its cells
(C) High... show full transcript
Worked Solution & Example Answer:What is a feature of an estuarine organism (eg mangroves) that allows it to survive?
(A) High rate of salt excretion
(B) Low rate of osmosis into its cells
(C) High uptake of salt from its environment
(D) Low uptake of oxygen from its environment - HSC - SSCE Biology - Question 9 - 2013 - Paper 1
Step 1
A) High rate of salt excretion
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Answer
Estuarine organisms, such as mangroves, often face high salinity levels. A high rate of salt excretion allows them to remove excess salts that enter their systems from the environment, which is crucial for maintaining osmotic balance.
Step 2
B) Low rate of osmosis into its cells
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Answer
While controlling osmosis is important, a low rate of osmosis into cells is not primarily a feature that helps estuarine organisms survive. Instead, they adapt by excreting excess salt.
Step 3
C) High uptake of salt from its environment
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Answer
High uptake of salt is detrimental for estuarine organisms. They need mechanisms to manage and excrete excess salt rather than accumulate it.
Step 4
D) Low uptake of oxygen from its environment
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Answer
Low uptake of oxygen is not a defining feature for estuarine organisms. They require adequate oxygen levels for respiration.
