Consider the following statements regarding chasmophytes and choose the correct answer:
1. Chasmophytes are plants rooted in fissures or clefts and crevices of rocks which are filled with earth, dust and other gravel or rock-debris
2. Chasmophytic flora consists of all types, they belong to Thallophyta, Bryophyta, Pteridophyta and Spermatophyta
3. Rhizoids and roots of chasmophytes are often constricted within narrow clefts and flattened out as thin filamentous structures
4. If the rock is provided with clefts and crevices, lithophytes along chasmophytes develop in these