Root cap protects the root from injury as it grows. The correct option among all the options that are given in the question is the fourth option or the last option. The root cap is also known by the name of calyptra. It is actually present at the tip of the root of a plant. I hope the answer helps you.
Answer: 2. The plants and animals diffused to a region with climate and geography similar to that of their point of domestication.
Explanation:
Knowledge of the centres of origin of plants and animals has increasingly improved. it is much harder to identify the way through which plants and animals were distributed, by what roads and what means they arrived at one place or another, who brought them and who diffused them.
One very important note is that plants and animals diffused to a region with climate and geography similar to that of their point of domestication which makes them survive and develop to the stage of harvest.
This would be the north as back during the reconstruction era, the north (Tom Watson's group) wanted to be more efficient and industrialized.
Reference: Georgia Studies Unit 6 notes