Adult stem cells are capable of only limited differentiation
Answer:C
Explanation:
The big line on the right is just a really common common ancestor, the bits that go left just became separate from the ancestor, so the other lines going left have become pretty different species, Arabidopsos is the endpoint, meaning that the right line is just directly where it came from, and the other lines came from what it came from as well, just at different points in time, in this case Cydad broke off at the most recent point, making it the closest relative
The reaction is called ACROSOME REACTION. The acrosome reaction occurs during the sperm interaction with the egg before fertilization occur. The acrosome is a structure that is found on the head of the sperm, it contains a chemical called acrosin which the sperm used to penetrate the egg. Sperm which can not undergo acrosome reaction can not penetrate the egg for fertilization.
Your nerves go into your bone, I know it sounds crazy but its true, your Skeletal system is mixed with your nerves, it helps you function, without your nerves going into your bones we couldn't be able to feel if a bone is hurting or if you are getting hurt without your nerves you couldn't feel pain your nerves help you feel pain and where the pain is coming from.