Ectophloic siphonostele is found in
(a) Osmunda and Equisetum
(b) Marsilea and Botrychium
(c) Adiantum and Cucurbitaceae
(d) Dicksonia and Maiden hair fern
(a) Osmunda and Equisetum
(b) Marsilea and Botrychium
(c) Adiantum and Cucurbitaceae
(d) Dicksonia and Maiden hair fern