Exercises on Lesson II.
1. Split an onion (or tulip bulb) down the centre, and compare it with the snowdrop bulb. Draw it, giving special attention to the middle part. 2. Take a potato and a crocus corm. Observe them both carefully, and find out (1) how they resemble each other, and (2) how they differ. 3. Explain how it is that a hyacinth grows so well in water. 4. Take any underground stem (e.g., iris or Solomon’s seal) and compare it with a crocus corm. Notice the marks of underground scale-leaves on the former.