 | Aretas Wilbur Nolan - 1909 - 316 pàgines
...with the glass, and allow the roots to extend into the water of the glass below. Moisture will collect on the inner surface of the glass. Where does it come...moisture absorbed by the roots given off in this way? How could you find out? Why do plants need water? References : — Id. — Pages 41-44. G. & M. — Pages... | |
 | Aretas Wilbur Nolan - 1909 - 316 pàgines
...with the glass, and allow the roots to extend into the water of the glass below. Moisture will collect on the inner surface of the glass. Where does it come...moisture absorbed by the roots given off in this way? How could you find out? Why do plants need water? References : — Id. — Pages 41-44. G. & M. — Pages... | |
 | Vermont. Commissioner of Agriculture - 1909 - 492 pàgines
...tumbler or jar large enough to cover the plant. Cut a slit in the cardboard and draw it around the plant. Seal the slit with pitch, wax, or tallow so that no...come up through it from below; cover the plant with glass and set in a warm, sunny place. Moisture will condense on the inner surface of the glass particularly... | |
 | Massachusetts - 1912 - 916 pàgines
...cover the plant. Cut a slit in the cardboard and draw it around the plant, as shown in the figure. Seal the slit with pitch, wax or tallow, so that no...; cover the plant with the glass, and set it in a warnij sunny place. Moisture will condense on Fio. 21. — A celery stalle in colored water. FIG. 22.... | |
 | Samuel Houston Dadisman - 1914 - 136 pàgines
...the notes on the observations. FIG. 5. — To show that plants give •. r . . ... , off moisture. Moisture will condense on the inner surface of the...Is all the moisture absorbed by the roots given off this way ? How can you find out ? Why do plants need water ? EXERCISE X Object. To show the rise of... | |
 | Samuel Houston Dadisman - 1914 - 158 pàgines
...slit in the cardboard and draw it around the plant as shown in the illustration. Seal the slit with tallow so that no moisture can come up through it...below. Cover the plant with the glass and set it in a sunny place. Observe what takes place in the glass from time to time. Tabulate the notes on the observations.... | |
| |
... sunny place. Moisture will condense on the inner surface of the glass. Where does it come from ? Is all the moisture absorbed by the roots given off in this way? How can you find out? 