. Elementary botany. Botany. HOW PLANTS OBTAIN THEIR FOOD. 99 206. Structure of the pumpkin seed.—The pumpkin .seed has a tough papery outer covering for the j)rotection (jf the embryo plant within. 'i'his covering is made u)) of the seed coats. When the seed is opened bv slitting off tfiese coats there is seen within the "meat" of the pumpkin seed. dliis is nothing more than the embryo plant. I'he larger jiart of this embryo consists of two flattened bodies which are more prominent than any other part of the plantlet at this time. These two flattened bodies are tlie two first leaves
. Elementary botany. Botany. HOW PLANTS OBTAIN THEIR FOOD. 99 206. Structure of the pumpkin seed.—The pumpkin .seed has a tough papery outer covering for the j)rotection (jf the embryo plant within. 'i'his covering is made u)) of the seed coats. When the seed is opened bv slitting off tfiese coats there is seen within the "meat" of the pumpkin seed. dliis is nothing more than the embryo plant. I'he larger jiart of this embryo consists of two flattened bodies which are more prominent than any other part of the plantlet at this time. These two flattened bodies are tlie two first leaves, usually called cotyledons. If we spread these cotyledons apart we see that they are connected at one end. Lying between them at this point of attachment is a small bud. This is the//«w«/(?. The plumule consists of the very young feaves at the end of the stem which will grow as the seed germinates. At the other end where the cotyledons are joined is a small projection, the young root, often termed the radicle. 207. How the embryo gets out of a pumpkin seed.—To see how the embryo gets out of the pumpkin seed we should examine seeds germinated in the folds of damp paper or on damp sphagnum, as well as some which have been germinated in earth. Seeds should be selected which represent several different stages of Germinating seed of pumpkin, showing how the heel or " peg " catches on the seed coat to cast it oft. 208. The peg helps to pull the seed coats apart.—The root pushes its way out from between the stout seed coats at the smaller end, and then turns downward unless prevented from so. 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 Atkinson, George Francis, 1854-1918. New York : H. Holt
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