Justify the need for plants to have mechanical, integumentary and conductive tissues in connection with the release into the ground-air environment.

Air has a low density, therefore, can not serve as a support for organisms. In connection with these, the organisms leading a terrestrial way of life have developed mechanical tissues.

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.