Question

Runners and rhizomes are mostly

• A. Sympoidal
• B. Diageotropic
• C. Plageogeotropic
• D. Ageotropic

Answer 1

Answer: (B)

Diageotropic

A. Sympodial is a kind of lateral growth pattern in which growth by the lateral buds continue and growth of apical meristem is terminated.

B. Diageotropic means growth at a right angle to the line of gravity.

C. Plageogeotropic means growth at an angle other than the right angle.

D. Ageotropic means growth away from earth.

Rhizomes are also called stolons. These are the stems which grow near the surface of ground or just below the ground. Adventitious roots are formed at the nodes of these stems. Rhizomes are the horizontal stems which form roots and shoots at the nodes. Runners and rhizomes are digeotropic as they grow horizontally or at right angle to the line of gravity.

So, the correct answer is 'Diageotropic'.