. Elementary botany . Fig. 402. Germination of castor-oil bean. they are gradually parted and come to stand out nearly in a horizontal posi- tion. Fig. 401 shows the different positions, and we see that the same pro- vision for the protection of the leaves is afforded as in the case of the pea. As the cotyledons become exposed to the light they assume a green color. Some of the stored food in them goes to nourish the embryo during germina- tion, and they therefore become smaller, shrivel somewhat, and at last fall off. 585. The castor-oil bean.—This is not a true bean since it belongs to a ver
. Elementary botany . Fig. 402. Germination of castor-oil bean. they are gradually parted and come to stand out nearly in a horizontal posi- tion. Fig. 401 shows the different positions, and we see that the same pro- vision for the protection of the leaves is afforded as in the case of the pea. As the cotyledons become exposed to the light they assume a green color. Some of the stored food in them goes to nourish the embryo during germina- tion, and they therefore become smaller, shrivel somewhat, and at last fall off. 585. The castor-oil bean.—This is not a true bean since it belongs to a very different family of plants (euphorbiace<-e). In the germination of this seed a very interesting comparison can be made with that of the garden bean. As the " bean'' swells the very hard outer coat generally breaks open at the
Size: 2088px × 2394px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjectbotany
