22 



PLANT GROWTH 



1. Resting stage 



'■' 'p ^'W 



■o 



.2. Prophase 



3. Prophase 



m 







4. Pirophaae 



5. Metaphase 



;'i?i?i^^^ 



■ : V •■■:■'•■.■■,.■- '■''•'..•^'^'^'■(■ifc-j-fc'-f.,-^; 



;s 



6. Anaphase 



V. Telophase 8. Telophase 9- Telophase 



Fig. 6. Semidiagrammatic representation of cell division in meristematic cells of a 

 plant, showing nuclear division by mitosis. 1, Cell before division begins, with the 

 nucleus in the resting condition. The chromatin threads form a network. 2, 3, 4, Pro- 

 phase of nuclear division. In 2 and 3 the double nature of the chromatin threads is 

 apparent. In 4 the chromosomes are distinct and their doubleness still apparent. 

 5, Metaphase of nuclear division; nucleolus and nuclear membrane have disappeared, the 

 spindle has been formed, the chromosomes lie in or near the equator of the spmdle, and 

 some of the fibers are attached to the chromosomes. 6. Anaphase. Movement of 



