One of the available treatment conditions was a solution of CaCl 2 . How is this
ID: 196637 • Letter: O
Question
One of the available treatment conditions was a solution of CaCl2. How is this salt expected to affect the feeding behavior of T. vorax and why?
CaCl2 is expected to decrease the number of food vacuoles formed because it is inhibits ciliary movement.
CaCl2 is expected to increase the number of food vacuoles formed because it is necessary for ciliary movement.
CaCl2 is expected to decrease the number of food vacuoles formed because high salt concentrations will kill the cells.
CaCl2 is not expected to have any affect on the number of food vacuoles formed because calcium is not present in the organism’s environment.
A.CaCl2 is expected to decrease the number of food vacuoles formed because it is inhibits ciliary movement.
B.CaCl2 is expected to increase the number of food vacuoles formed because it is necessary for ciliary movement.
C.CaCl2 is expected to decrease the number of food vacuoles formed because high salt concentrations will kill the cells.
D.CaCl2 is not expected to have any affect on the number of food vacuoles formed because calcium is not present in the organism’s environment.
Explanation / Answer
Ans: B
At optimum concentration CaCl2 will fasten the ciliary movement and increase the food vacuoles. But at too high concentarion its kills the cells and can be used as treatment. Since the question posed about the feeding behavior the Option B is right.
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