Besides paddy fields cyanobacteria are also found inside vegetative part of :

Options

(a) Cycas
(b) Equisetum
(c) Psilotum
(d) Pinus

Correct Answer:

Cycas

Explanation:

In Cycas specialised root called coralloid roots are associated with N2 – fixing cyanobacteria either Nostoc or Anabaena. Coralloid roots lie near the soil surface. They are irregular and often dichotomously branched. Root hair and root cap are absent in these roots.