Question

Rhizophore in Selaginella is

• A. A modified leaf
• B. A root
• C. A shoot
• D. Organ Sui generis

Answer 1

The correct option is D Organ Sui generis

Rhizophores is a structure of controversial morphological nature.They are leafless and positively geotropic organs that have localised origin and develop from angle meristems. Goebel and Bower considered them as Organs sui generis (i.e.,neither roots or shoots). According to J.C.Shoute,Organ sui generis is one that is a novelty and has not arisen as result of metamorphosis of any organ.