Which of the following is not heterosporous?

Statement $S$: In Pteridophytes,spores are produced in sporangia. Statement $R$: In Pteridophytes,sporangia are produced on sporophylls.

In aquatic ferns,the sporangia are found in a specialized structure called a sporocarp. This aquatic fern is .......

In Pteridophyta and gymnosperms,which cells are present in place of companion cells?

Meristeles are found in

$A$ plant having vascular supply,producing spores but lacking seeds is a