Question

Read the two incidents given below.

Incident 1: A species of moth is preyed on by bats. Over hundreds of years, the moths develop a sophisticated pattern of flying when they hear the screech of a bat. This helps them escape danger. Other changes occur like, when the current moth mates with its ancestor moth, no viable eggs are produced.

Incident 2: A species of frogs is living in a pond near an earthquake fault line. An earthquake separates the frog population into two separate populations. After hundreds of years, the two groups are unable to mate.

Suppose an earthquake takes place in incident 2 which leaves one of the groups of frogs without water. In that case, the survival of frogs will take place or not?

• A. No, frogs are amphibians and can live only in water.
• B. No, frog eggs must be laid in water because they lack a shell.
• C. Yes, because amphibians frogs can live on both land and water.
• D. Yes, frogs have a thick scaly skin, which protects them from dehydration.
• E. Yes, the frogs would quickly adapt to the new environment.

Answer 1

The correct option is B No, frog eggs must be laid in water because they lack a shell.

Frogs are amphibians and can survive in both and water but their eggs lack a shell and are laid in water to avoid dehydration. This makes option A incorrect but option B correct. Option C is correct but they do not have thick scaly skin to prevent them from dehydration and therefore, they need to be in the vicinity of water to prevent dehydration.

Therefore, the correct answer is option B.