Vegetable tissues can be formed either by the same cells or by different ones. Like the animal tissues they perform various functions. The rudimentary tissue locates in the places of plants growth and shapes the meristem. The greater part of the total mass of a plant is arranged by the supporting and the nutritive ones. They impart strenght and conserve the nutritives. The pritective tissue covers the leaves, the stem and the roots and serves to defend a plant against injury. The roots, the stem and the leaves are penetrated by a lot of vessels providing the transportation of sap all over the plant. It is the function of the conductive tissue.
1. Do the engineers carry out the experiments with new building materials? 2. Will the electronic computer make our travel in high speed train safer? 3. Are chemists developing new materials at present? 4. Was the first railway in our country electrified in 1926? 1. The engineers do not carry out the experiments with new building materials 2. The electronic computer will not make our travel in high speed train safer 3. At present chemists are not developing new materials 4. The first railway in our country was not electrified in 1926.
2. Will the electronic computer make our travel in high speed train safer?
3. Are chemists developing new materials at present?
4. Was the first railway in our country electrified in 1926?
1. The engineers do not carry out the experiments with new building materials
2. The electronic computer will not make our travel in high speed train safer
3. At present chemists are not developing new materials
4. The first railway in our country was not electrified in 1926.