Evolution led to certain fishes, such as lung fishes to adapt to terrestrial mode of life. these fishes were the ancestors of modern amphibians. which evolutionary mechanism is represented by this example?

a. convergent evolution
b. adaptive radiation
c. sympatric evolution

The correct answer is-

A. Convergent evolution.

Convergent evolution can be described as evolutionary process by which organisms independently evolve similar characteristics due to adaptation in the similar environmental conditions.

As per the information given in this question, lung fishes adapted to terrestrial mode of life and considered as the ancestors of modern amphibians.

Amphibians also came into existence by adapting to terrestrial mode of habitat and they also developed lungs for respiration on land.

Thus, it represents the example of Convergent evolution.

Therefore, option A) is the right answer.

thats not a question

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.