416 EXAMINATION PAPERS 



2. When do ' evergreens ' shed their leaves ? Compare the 

 leaves of ' evergreens ' with those of deciduous trees. Can you 

 suggest any reasons for the difference ? 



3. From what sources do the opening buds of spring draw 

 their supplies of material ? Mention the materials in each case. 



4. Describe how the different regions of the root are formed. 

 What are their uses to the plant ? Give reasons for your answer. 



Section B 



5. (Obligatory) Of what uses are green leaves to plants ? 

 Describe experiments and observations which support your 

 answer. 



6. Describe the conditions under which seeds germinate 

 best. Point out why these conditions are necessary. 



7. Describe the appearance of any Fern. Point out some 

 of the chief differences between a Fern and a flowering plant. 



8. What is pollen ? Where is it formed ? What function 

 does it perform ? 



INTERMEDIATE EDUCATION BOARD FOR IRELAND 



Examination 191 i (June) 



Special Paper (Third Year) 



Section A 



1. (Obligatory) How do the following insects affect the 

 growth of plants : Humble-Bee, Aphis (or green fly), grub of 

 Daddy-long-legs, Wireworm ? State in each case what part 

 of the plant is acted on by the insect, and whether the result 

 is beneficial or injurious to the plant. 



2. Describe the special characteristics of grasses that inhabit 

 sand-dunes, and show how these are suitable to the conditions 

 under which the plants live. 



3. How can you tell the age of the branch of a hardwood 

 tree (e. g. Beech, Lime, Elm) by external and internal features ? 

 Explain how these features are produced. 



