Medical Quiz

Transportation and Excretion Quiz

___ opens and closes the stomata.

A. Guard cells

B. Xylem

C. Roots

D. Phloem

Select your answer:
A  B  C  D  E 

Topics:

Health and Disease Integumentary and Musculoskeletal Systems Medical Careers Neurological Concepts Vascular The Cell Cycle & Cancer Asexual Reproduction Tissues Linked Gene Urinary System Type of Dementia Excretion-Dialysis Maximal Oxygen Consumption (VO2 Max) Chronic Diseases Food

Other quiz: Cosmetology

Normal hair contains percent of the element oxygen.

A. 6

B. 17

C. 21

D. 51