Biology
← Back

Science Bowl Question

📅 NSB Round Robin 2018🎓 HS🔄 Round 10#️⃣ Question 9❓ Toss-Up📝 Multiple Choice

In a tree, older, nonfunctioning xylem is called what?

W) Springwood
X) Sapwood
Y) Summer wood
Z) Heartwood
🚀

Take Your Prep to the Next Level

Practice with interactive modes, adaptive testing, and detailed stats on our main app.

Launch Interactive Practice