Question

33/35 the effect of ph on frog embryo hatching ph exposure embryos exposed (n) embryos hatched (n) percentage hatched ph 6.5 30 0 0 ph 6 30 11 36.7 the effect of ph on frog embryo hatching ph exposure embryos exposed (n) embryos hatched (n) percentage hatched ph 6.5 30 0 0 ph 6 30 11 36.7 ph 5.5 30 16 53.3 ph 5 30 20 66.7 ph 4.5 30 27 90 ph 4 30 0 0 ph 3.5 30 0 0 investigate how changes in the frogs can tolerate a ph between 4.5 and 6. the frogs can tolerate any ph less than 4. q. a scientist wanted to investigate how changes in the ph of a lake affect a frog population. the table shows the results of their experiment.which of the following best describes the frog species’ range of tolerance to acidic conditions?

Explanation:

Step1: Analyze the table data

We see that at pH 6.5, 0 embryos hatched; at pH 6, 11 embryos hatched (36.7%); at pH 5.5, 16 embryos hatched (53.3%); at pH 5, 20 embryos hatched (66.7%); at pH 4.5, 27 embryos hatched (90%); at pH 4 and 3.5, 0 embryos hatched.

Step2: Determine the tolerance range

The embryos hatched when pH was between 4.5 - 6, so this is the range where the frogs seem to tolerate the acidic conditions for successful hatching.

Answer:

The frogs can tolerate a pH between 4.5 and 6.