What features of psilophytes allowed them to master the land first?
1) The appearance of integumentary tissue – the epidermis with stomata to protect against evaporation.
2) The emergence of an underdeveloped conductive system for the transport of substances.
3) The appearance of mechanical tissue to perform the supporting function. The presence of rhizoids for fixing in the soil.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.