. Biology and human life. Biology. 34 BIOLOGY AND HUMAN LIFE it originates (the stamen) to the seed-bearing organ (the pistil) (see page 42). The bees and the butterflies represent two groups that are most generally active in this process of pollena- tion (see Chapter IV). This interdependence between insects and seed-bearing plants is in some cases so great that certain orchids are dying out because the insects necessary for pollena- tion are not sufficiently abundant to insure seeds every year. In other cases insects in- troduced in a new re- gion cannot maintain themselves because the neede
. Biology and human life. Biology. 34 BIOLOGY AND HUMAN LIFE it originates (the stamen) to the seed-bearing organ (the pistil) (see page 42). The bees and the butterflies represent two groups that are most generally active in this process of pollena- tion (see Chapter IV). This interdependence between insects and seed-bearing plants is in some cases so great that certain orchids are dying out because the insects necessary for pollena- tion are not sufficiently abundant to insure seeds every year. In other cases insects in- troduced in a new re- gion cannot maintain themselves because the needed food plants are not present. In our reg- ular horticulture it hap- pens occasionally that trees or bushes in full blossom fail to yield the expected crop of fruit because of the lack of insects to insure pollen- ation. This is why wise farmers and orchard- men so often maintain hives of bees: even where the honey itself is not considered worth producing, the bees are worth having because they insure abundant pollenation at the right time. 28. Homology. The division of labor among the organs of the bee is of course the same as that which we find in other in- sects, or even in entirely different classes of animals such as our own bodies; but if we compare the insects already studied with one another, we shall find that most of the functions are carried on by corresponding organs in the different animals. Thus, the locomotive organs in bees, butterflies, and grasshoppers are the legs and wings, and in every case the position of the organ and the general plan of structure are the same. If we examine the. Fig. 15. Division of labor among ants Three forms of the Central American fighting ant (C/ieliomyrmex nortoni): a, soldier; b, medium worker; c, small worker. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gr
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