Question
Based on the pictures of the various tortoises, which of the following is the best explanation of why they have different neck lengths?
The Isabela Island tortoise has short neck because there is limited food resources on their island, so they do not need to reach very far.
Each of the tortoises is adapted to the environment of their different islands. Selection for the neck length has occurred over many generations.
The Hood Island tortoise has a long neck because there is plenty of food resources on their island, so their long neck allows them to reach up to eat plant leaves.
The Pinta Island tortoise has a medium neck because they are the offspring of the Hood and Isabela Island tortoises.
Their neck length is not related to the environment that they live.
The Isabela Island tortoise has short neck because there is limited food resources on their island, so they do not need to reach very far.
Each of the tortoises is adapted to the environment of their different islands. Selection for the neck length has occurred over many generations.
The Hood Island tortoise has a long neck because there is plenty of food resources on their island, so their long neck allows them to reach up to eat plant leaves.
The Pinta Island tortoise has a medium neck because they are the offspring of the Hood and Isabela Island tortoises.
Their neck length is not related to the environment that they live.
Answers
GPT-4o mini
The best explanation for the differences in neck lengths among the tortoises is:
**Each of the tortoises is adapted to the environment of their different islands. Selection for the neck length has occurred over many generations.**
This explanation recognizes that the variations in neck length are a result of evolutionary adaptations to the specific environmental conditions and food availability on each island. Natural selection favors traits that enhance survival and reproductive success, leading to the observed differences.
**Each of the tortoises is adapted to the environment of their different islands. Selection for the neck length has occurred over many generations.**
This explanation recognizes that the variations in neck length are a result of evolutionary adaptations to the specific environmental conditions and food availability on each island. Natural selection favors traits that enhance survival and reproductive success, leading to the observed differences.