There are generally four acceptable answers (unless being put to you by your own lawyer at a depo or in a trial based on a previous understanding of what the responses are, because a good lawyer never asks a question they don't know the answer to).
The acceptable answers (and again truthfulness is required, while helpfulness is not):
1. Yes 2. No 3. I don't know 4. I can't recall
The difference between 3 and 4 being that you may have known at one time, but you no longer do. If a follow up or further explanation is needed, your lawyer will deal with that on redirect, etc. To the other side, you say only what you must.
No need to respond to him and it won't help anything. He wants the drama to continue. Why? Attention, a sense of CONTROL, need for drama. All the same reasons mine pulls this garbage. Remember, they like any attention, good or bad (Terrence Real explains the difference in his book on male depression "I Don't Want to Talk About It"). Yours is not ready for the show to be over and loves to make you suffer. If you haven't, read up on antisocial behavior type.