Zoology a Textbook for Universities Colleges And Normal Schools Thomas Walt
Zoology a Textbook for Universities Colleges And Normal Schools Thomas Walt
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On these latter, open the ducts of the numerous glands secreting the fluid which hardens on exposure to the atmosphere and makes the silk of the web.
Spiders may be classified on the basis of the type of web which they make. The "orb-weavers" construct webs of great regularity and beauty; others, as the 3 c8 ZOOLOGY FlG. 151.
PIG. 151. Spiders (Epeira marmorea). After McCook. Male on left; female on right. Natural size.
Questions on the figure. What differences do you note with respect to the s...exes? What habits of the spiders are correlated with this difference in size in the sexes?
FIG. 152.
FIG. 152. Web of Epeira slrix, an Orb-weaving Spider. After McCook.
Questions on the figure. By reference to other texts or by observation determine if there is any regular order in which the parts of the web are produced. To what is this form of web an adaptation? Evidences? What other forms of webs are constructed for similar purposes?
ARTHROPODA 309 cob-web spider, make a complex and irregular mesh-work of fibres running in all directions; others spin a web similar to the last with the exception that at one point it is continued into a tube into which the spider retreats for hiding.
What to read after Zoology a Textbook for Universities Colleges And Normal Schools Thomas Walt?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Walton Galloway to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
On these latter, open the ducts of the numerous glands secreting the fluid which hardens on exposure to the atmosphere and makes the silk of the web.
Spiders may be classified on the basis of the type of web which they make. The "orb-weavers" construct webs of great regularity and beauty; others, as the 3 c8 ZOOLOGY FlG. 151.
PIG. 151. Spiders (Epeira marmorea). After McCook. Male on left; female on right. Natural size.
Questions on the figure. What differences do you note with respect to the s...exes? What habits of the spiders are correlated with this difference in size in the sexes?
FIG. 152.
FIG. 152. Web of Epeira slrix, an Orb-weaving Spider. After McCook.
Questions on the figure. By reference to other texts or by observation determine if there is any regular order in which the parts of the web are produced. To what is this form of web an adaptation? Evidences? What other forms of webs are constructed for similar purposes?
ARTHROPODA 309 cob-web spider, make a complex and irregular mesh-work of fibres running in all directions; others spin a web similar to the last with the exception that at one point it is continued into a tube into which the spider retreats for hiding.
What to read after Zoology a Textbook for Universities Colleges And Normal Schools Thomas Walt?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Walton Galloway to read onlineMoreLess
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