★ Biology Quiz
the walls of the xylem vessels are thickened by ……
A. subrin
B. cutin
C. lignin
D. cellulose
Select your answer:
Topics:
Orthopaedic Neurology Excretion-Dialysis Infectious Diseases & the WHO EMS Systems Joints in our Body Thyroid Circulation and Excretion Cardiovascular Pathophysiology Tib/Fib, Knee and Femur Vocabulary for Organisms in Ecosystems Psychology Vocabulary Breathing System Benefits of Physical Activity Personal Growth Plan Central Nervous SystemOther quiz:
Fad Diets › ViewFad diets are recognizable because
A. they purport to have a miracle cure
B. they have an “easy” solution to a complex problem
C. they are endorsed by celebrities
D. All of the above
Health Issues and Concerns › View
Is a hearing-related problem COMMON in CHILDREN because the tube that allows air in the middle ear is not yet fully developed?
A. Cerumen
B. Body Odor
C. Otitis Media