Question

strobili or cones are found in
equisetum,salvinia,pteris,marchantia​

Answer 1

Explanation:

Figure A shows Selaginella. It belongs to pteridophytes which are the first terrestrial plants to possess vascular tissues – xylem and phloem. It belongs to the Lycopsida class of pteridophytes. Leaves of Selaginella are small and known as microphylls. Sporophylls are compactly arranged into structures called strobili or cones. It is a heterosporous plant as it produces two kinds of spores.

Figure B shows Equisetum. It belongs to pteridophytes which are the first terrestrial plants to possess vascular tissues – xylem and phloem. It belongs to the Sphenopsida class of pteridophytes. Sporophylls are compactly arranged into structures called strobili or cones.

Figure C shows Salvinia. It is an aquatic fern. It also belongs to pteridophytes. It is also a heterosporous plant as it produces two kinds of spores – macro (large) and micro (small) spores.

Figure D shows Ginkgo. It belongs to gymnosperms which are plants in which the seeds are not enclosed within the fruit wall, i.e., they bear naked seeds. Ginkgo is also called a living fossil. It is a connecting link between cycades and conifers.

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Answer 2

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. Equisetum are also known as horsetails and come under the category of ferns.