vi HOW TO PREPARE AND EXAMINE SECTIONS 73 



The Compound Microscope is an instrument which consists of lens 

 and accessory parts. Such an instrument is used for the examination of 

 the minute parts of plants. 



QUESTIONS ON CHAPTER VI. 



(1) What do you understand by the term " section''? What kinds 

 of sections can be made from a stem ? 



(2) Write a set of rules to guide you in mounting sections. 



(3) Why, in mounting sections, must a cover-glass be placed over the 

 object ; and how is such a cover glass put on ? 



(4) Explain what is meant by air-bubbles, and how they find their 

 way into sections. 



(5) A hand-lens and a transparent section are given to you. How 

 should the lens be used so as to examine the section? 



(6) What is a cell ? Of what parts does a cell consist ? 



(7) A Tomato is given to you to make a preparation showing the 

 cells. Explain how you would proceed to do this. 



(8) Explain what is meant by the term "tissue." What kinds of 

 tissue can be found in plants ? 



(9) Give an account of the structure of the stem of the Sunflower, 

 and compare it with the stem of the Maize. 



(10) Explain the term annual ring, as applied to woody trees. How- 

 is it that each ring is formed of a light coloured layer and a dark coloured 

 layer ? 



