. Elementary biology; an introduction to the science of life . Fig. 108. Regeneration in lizard The glass snake and other lizards throw or cut off a part of the body when attacked, and later regrow the lost tail or limb. The original tail of the lizard is an extension of the backbone ; in the regenerated tail there are no vertebras. Experimentally lizards have been made to regenerate two or three tails in succession. The figure shows the Surinam Ameiva 323. Grafting. Suppose we have a vigorous apple tree that is perfectly healthy and satisfactory in every way, except that its fruit is too hard
. Elementary biology; an introduction to the science of life . Fig. 108. Regeneration in lizard The glass snake and other lizards throw or cut off a part of the body when attacked, and later regrow the lost tail or limb. The original tail of the lizard is an extension of the backbone ; in the regenerated tail there are no vertebras. Experimentally lizards have been made to regenerate two or three tails in succession. The figure shows the Surinam Ameiva 323. Grafting. Suppose we have a vigorous apple tree that is perfectly healthy and satisfactory in every way, except that its fruit is too hard or too small or too sour. We have no way of making the fruit of that tree of a better quality. But we can use the vigorous roots of that tree, and the food- making factories (the leaves), to supply water, salts, and food to a twig from another tree that bears the kind of apples we like (see Fig. no). A notch is cut in one of the branches of the first tree, and the wedge-shaped butt of the twig from the second tree is fitted into the notch. The joint is covered with a special wax preparation to keep out fungi and bacteria and
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
