Question

Strobili or cones in pteridophytes are formed by
(1) Roots
(2) Spores
(3) Sporophylls
(4) None of these​

Answer 1

Spores are produced within sporangia. Sporangia are borne on sporophylls which are arranged spirally along an axis. The Sporophylls form lax or compact strobili or cones.

Answer 2

Answer:

Spores are produced within sporangia. Sporangia are borne on sporophylls which are arranged spirally along an axis. The Sporophylls form lax or compact strobili or cones.

Explanation:

therefore option 3 is correct