(i) Selaginella and Salvinia are heterosporou | vedclass

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(D) $(i)$ Selaginella and Salvinia are indeed heterosporous pteridophytes,as they produce two types of spores (microspores and megaspores). This state

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(D) $(i)$ Selaginella and Salvinia are indeed heterosporous pteridophytes,as they produce two types of spores (microspores and megaspores). This statement is correct.$(ii)$ The gametophyte of pteridophytes is a small,free-living,mostly photosynthetic thalloid structure called a prothallus. This statement is correct.$(iii)$ In Cycas,the stem is typically unbranched,whereas in Pinus and Cedrus,the stems are branched. This statement is correct.$(iv)$ All gymnosperms are heterosporous; they produce haploid microspores and megaspores. This statement is correct.Since all four statements are correct,the total number of correct statements is $4$.

$(i)$ Selaginella and Salvinia are heterosporous plants.
$(ii)$ The gametophyte of pteridophytes is called a prothallus.
$(iii)$ In Cycas,stems are unbranched.
$(iv)$ Gymnosperms are heterosporous.
How many statement$(s)$ is/are correct?

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$(i)$ Selaginella and Salvinia are heterosporous plants.$(ii)$ The gametophyte of pteridophytes is called a prothallus.$(iii)$ In Cycas,stems are unbranched.$(iv)$ Gymnosperms are heterosporous.How many statement$(s)$ is/are correct?