Does the password in the ConnectionString travel encrypted?

Hello,

I have a very simple question I could find nothing about.

I am using Connector/Net for a distributed application involving a DB.

The question is: when I connect to a database with a ConnectionString
like "database=foo; server=220.40.231.2; uid = root; persist security
info= false; pwd=blabla", does my root password travel in clear-text?

AFAIU, the DB server should first send me its public key, with which I
would encrypt my root passord. Does this really happen under the hood,
or is my password travelling in clear?

I did notice the "encrypt=true" option in the connection string, but
it does not seem appropriate, because I don't need to encrypt all
communication with the DB server -- just the password.

Thank you very much for any reply.

Maurizio