. Botany for agricultural students. Plants. SUMMARY OF SEEDLINGS 111 Summary of Seedlings. — Seedlings of Flowering Plants are either nionocotyledonous or dicotyledonous on the basis of the number of cotyledons. Among the Monocotyledons the tem- porary root system is a prominent feature, and the cotjdedon may remain in the ground as in the Grasses or be raised to the light as in the Onion. In Dicotyledons the first root system is usually the permanent one and may consist mainly of a tap-root or of many roots nearly equal in size. In many Dicotyledons the coty- ledons are raised to the light wh
. Botany for agricultural students. Plants. SUMMARY OF SEEDLINGS 111 Summary of Seedlings. — Seedlings of Flowering Plants are either nionocotyledonous or dicotyledonous on the basis of the number of cotyledons. Among the Monocotyledons the tem- porary root system is a prominent feature, and the cotjdedon may remain in the ground as in the Grasses or be raised to the light as in the Onion. In Dicotyledons the first root system is usually the permanent one and may consist mainly of a tap-root or of many roots nearly equal in size. In many Dicotyledons the coty- ledons are raised to the light where they function to some extent like ordinary leaves. The fleshy ones, however, lose their stored food in a short time and fall from the plant. In some cases, as the seedhngs of Buckwheat, Morning Glory, and Cotton illustrate, the cotyledons become more leaf-like and persist longer, although they are always easily distinguished from true leaves. In some Dicotyledons the cotyledons remain in the soil and the plumule is raised to the light by the elongation of the stem of the 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 Martin, John N. (John Nathan), b. 1875. New York, John Wiley ; London, Chapman & Hall
Size: 1758px × 1422px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1919
