Question 149:
One significant difference between roots and stem is that
- A Branch roots originate in the pericycle while stem do not
- B Stems are always bove the ground while root are always below the ground
- C Stems are positively geotropic while roots are negatively geotropic
- D Stem are sometime used for storage while roots are never used
- E Stems grow in both length and circumference while root grow only in length