SO COMPARATIVE STUDY OF CEREALS 



Further Study of Tillers and Roots. Visit fields of wheat or oats that 

 have been recently sown. 



Search for plants in all stages of development, from those just coming 

 up to well-developed plants 4 or 5 weeks old. 



Make sketches showing all stages, especially noting the development of 

 tillers and permanent roots. 



Does the depth at which roots and tillers develop appear to be affected 

 by depth at which seed is sown? 



Do plants tiller more in some parts of the field than in other places? 

 Is tillering related to richness of soil? To rate of planting? To time of 

 planting ? 



QUESTIONS 



1. How do germinating wheat and barley grains differ in appearance? 



2. Explain about the temporary and permanent roots. 



3. How is the "tiller" related to the main stem? 



4. How does rate of planting affect the number of tillers ? 



5. What is a node? An internode? 



6. How do the flowers in corn differ from those of wheat? 



7. Name the parts of a wheat head. The parts of a wheat flower. 



8. What is fertilization? 



9. Define cross- and self-fertilization. 



10. Give examples of plants that normally self-fertilize and cross-fertilize. 



11. What is the egg cell? 



12. What part of the seed is highest in protein? Oil? Ash? Carbohydrates 1 



13. Which part do you think would have greatest feeding value? 



14. Which of the cereals are highest in protein? Fat? Fiber? 



15. Do hard and soft grains of wheat differ in color? Composition? 



16. How does climate affect composition of wheat? Barley? Corn? 



