EVERYDAY SCIENCE

Detailed explanation-1: -Solution: In some cases in pteridophytes, sporophylls may form distinct compact structures called strobili or cones (Selaginella, Equisetum).

Detailed explanation-2: -Equisetum and Selaginella are pteridophytes which produce strobili. Salvinia and Pteris are pteridophytes which do not produce strobili.

Detailed explanation-3: -The sporophylls are located near the base of the plant producing spores, which forms the reproductive part of the plant. They are mostly found in vegetative part of the stems.

Detailed explanation-4: -Final answer: Strobili or cones are found in Equisetum.

Detailed explanation-5: -Strobili or cones are found in Equisetum. Strobili or cones are the dense and compact structure present on non flowering plants. They contain sporangia and perform function of protecting spores from wild animals and harsh conditions of environment. In Equisetum they are present at terminal position on stem.