1. primary meristem
2. secondary meristem
3. intercalary meristem
4. apical meristem
1. Aminase
2. Nitrogenase
3. Nitrate reductase
4. Nitrite reductase
1. terrestrial plant
2. xerophytic plant
3. halophytes
4. psammophytes
1. Salmonella
2. Clostridium
3. Hemophilus
4. Mycobacterium