Question

Rhizome/runner is

• A. Diageotropic
• B. Plagio-geotropic
• C. Negatively geotropic
• D. Positively geotropic

Answer 1

The correct option is A Diageotropic

Diageotropic is the part of plant that grows at a right angle to the direction of gravity. Example of diageotropic include rhizome, runner. Plagiogeotropic is the part of plant that grows at intermediate angle between 0${}^o$ and 90${}^o$ to the direction of gravity. Side roots of the first order is an example of plagiogeotropic. Negatively geotropic is part of plant that grows against the gravity. Example includes stem of plant. Positively geotropic is part of plant that grows in the direction of gravity. Root is an example of positively geotropic organ.

Thus, the correct answer is option A.