. Botany for agricultural students. Plants. NATURE AND STRUCTURE OF SEEDS 57 On the surface of seeds occur certain structures which suggest the structural relation of the seed to the ovule. The micropyle, the small opening through which the pollen tube entered the ovule, persists as a tiny pit on the seed coat. Usually near the micropyle there is a much larger scar, called the hilu7n, left where the seed broke away from the funiculus, the stalk-like structure which attached the ovule to the ovary and through which the seed received food and water during its development. (Fig. 61.) In case an o
. Botany for agricultural students. Plants. NATURE AND STRUCTURE OF SEEDS 57 On the surface of seeds occur certain structures which suggest the structural relation of the seed to the ovule. The micropyle, the small opening through which the pollen tube entered the ovule, persists as a tiny pit on the seed coat. Usually near the micropyle there is a much larger scar, called the hilu7n, left where the seed broke away from the funiculus, the stalk-like structure which attached the ovule to the ovary and through which the seed received food and water during its development. (Fig. 61.) In case an ovule turns over on its elongated stalk and grows fast to it, the stalk persists on the seed coat as a distinct ridge, called the raphe. {Fig. 62.) In some seeds, like those of. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1919
