David S Day 24

 Unexpected 6/6. 

1. Xylem, phloem :), D02. I knew both with certainty but had no idea which was which and desperately wanted to avoid another sine cosine disaster. I have always heard them referred to in this order, though, so I hoped for the best. 
2. Factorial :), D23. Lol. Gimme. 
3. Beehive :), D22. Really didn’t expect to get this. I couldn’t think of any other hairstyle that could possibly fit the description (though admittedly I’m not sure I could think of any other hairstyle at all). 
4. Berkshire Hathaway :), D10. Gimme. 
5. Yellow :), D11. Was really unsure here. Happy to get it. 
6. Grant :), D31. I actually thought Hiram was his first name, but in any event I knew it had to be him.