No, anyone can see your question but only that gender can reply to whom you have posted the question. Meaning if you have asked the question specifically for girls only then only the "GIRL" gender can reply to your question but "MEN" can see your question and view the replies.
It appears on the main feed, so all genders can still access the question, but if you posted it just for girls, then only girls will be able to answer it, same goes for guys. So basically anyone can read the answer and see the question, but only your desired gender could answer :)
Only the targeted gender users will see the question in their feed.. however if the other gender user know the link to that question, or spotted it in a user profile/opinions for example, they can view the question page; but cannot post.
I dont think so. But if you follow someone andbyours see the commented in a question just for males you'd be able to see it or if I commented on one recently just for guys you'd be able to see that on my profile. Stalker 😜😉😂