Question

when testing for starch within the potato and onion, the test tube containing potato turned purple while the test tube containing onion turned orange. what can you conclude about the amount of starch in these two vegetables? multiple choice neither the potato nor the onion contained starch. the potato contained a higher concentration of starch than the onion. the potato contained no starch, but the onion did. the potato contained starch, but the onion did not. the potato contained lower concentration of starch than the onion did.

Explanation:

Iodine - starch reaction is used to test for starch. A purple - black color indicates the presence of starch. Since the potato sample turned purple and the onion sample turned orange (indicating no or very little starch), the potato contained starch while the onion did not.

Answer:

The potato contained starch, but the onion did not.