Which of the following statements is correct?
(1) Horsetails are gymnosperms
(2) Selaginella is heterosporous, while Salvinia is homosporous
(3) Ovules are not enclosed by ovary wall in gymnosperms
(4) Stems are usually unbranched in both Cycas and Cedrus
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i don't know the correct answer maybe
4 one is ryt
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ovules are not enclosed by ovary wall in gymnosperms
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