. Elements of biology; a practical text-book correlating botany, zoology, and human physiology. Biology. FRUITS 53 flowers. From what you have observed, make up a definition of a pepo fruit. Draw a cross section of the squash, natural size. Berry. — A gardener or vegetable vender rarely calls a tomato a berry. Tomatoes, however, are considered excellent examples of this type of fruit.^ In botanical language, a berry is any pulpy, juicy mass containing seeds, this mass inclosed in a rather tough but thin covering, as a rind or skin. In popular language, a berry is any small round edible fruit c
. Elements of biology; a practical text-book correlating botany, zoology, and human physiology. Biology. FRUITS 53 flowers. From what you have observed, make up a definition of a pepo fruit. Draw a cross section of the squash, natural size. Berry. — A gardener or vegetable vender rarely calls a tomato a berry. Tomatoes, however, are considered excellent examples of this type of fruit.^ In botanical language, a berry is any pulpy, juicy mass containing seeds, this mass inclosed in a rather tough but thin covering, as a rind or skin. In popular language, a berry is any small round edible fruit con- taining small seeds. Drupe. — Another fleshy fruit is the drupe or stone fruit. This is illustrated by the peach or cherry. In the drupe a juicy interior is sur- ^ rounded by a skin; the center of the fruit is occupied by a stone which contains the seed. This stony covering is made up of the inner wall of the pericarp (ovary wall) which has separated from the part which forms the flesh of the fruit. The connection between these two layers is well seen in a clingstone peach or a very young cherry. Classify as many of the follow- ing named fruits as you can : plum, apricot, egg plant, watermelon, lemon, pomegranate, cranberry, black haw, pear, date, olive. Make up your classification in tabular form. T>v T^ ', K ^ r -J. The cherry; a stone fruit or drupe. Dry Fruits. — A dry iruit may split open to allow the escape of seeds. The pea is an exam- ple. Such a fruit is said to be dehiscent.^ Study an open pea pod. When it splits, it separates along both edges of the two sides or valves. Such a fruit is called a legume. Follicle. — If the ovary splits along one edge of a valve only, the fruit is called a follicle. The milkweed pod is an example. Capsule. — When the ovary forming the fruit is compound, the ovary having several locules, it is said to be a capsule. 1 For laboratory work on the tomato, see Hunter and Valentine, Manual, page 71. 2 For laboratory exercises
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