Answer:
The correct option is 'a'
If osmotic pressure increases when a mussel is submerged in the water,the blood osmotic pressure also increases.
Explanation:
Mussels are bivalves that are found in fresh water as well as marine water.
They have bluish blood and small heart pumps the blood.Some mussels have red blood which contain hemoglobin that carry oxygen rather than hemocyanin.
The mussels show increase in blood chloride level and amino acid when the osmotic pressure of the water increases.
Submerging the mussel in the aquatic environment increases osmotic pressure of the mussel.
