Chapter XXV: Part II: Elementary Science.—syllabus No. II

(_You should answer_ SIX _questions._)

1. Describe with the aid of a drawing the various structures
seen by means of a pocket lens in a section across the middle
region of a grain of wheat.

2. How would you measure the rate of transpiration of water
from a small plant or a leafy stem?

3. How can it be shown that the root responds to external
influences of moisture, light and gravity?

4. Give a brief account of the function of the green leaf in
the nutrition of plants.

5. Compare by drawings the leaves of broad bean and garden
pea. Then discuss the means by which the two plants obtain
mechanical support.

6. When the bulb of a thermometer is placed in a jar of soaked
and germinating seeds, what temperature change is observed?
Explain the cause of this.

7. Describe experiments which show in what respects the air is
affected in composition by passing through the lungs.

8. Describe with the help of drawings the structure of the
flowers of the hazel or willow and show how they are adapted
for cross-pollination.

9. What is meant by root pressure, and how would you
demonstrate it? Illustrate your answer by drawings.

10. What are the conditions of the soil which make it a
suitable medium for healthy root-action and vigorous plant
growth? Conversely under what conditions of soil would the
plant fail to thrive or die?

Board of Education (South Kensington).

GENERAL BIOLOGY.