give examples for drupe and aggregate fruit
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Answer:
Aggregate Fruits: A cluster or aggregation of many ripened ovaries (fruits) produced from a single flower. In blackberries and raspberries (Rubus), the individual fruits are tiny, one-seeded drupes or drupelets. Since all the seed-bearing ovaries (carpels) form a fused cluster, the fruit is also called a syncarp.
4. Drupe: Fleshy fruit with hard inner layer (endocarp or stone) surrounding the seed. E.g. peach, plum, nectarine, apricot, cherry, olive, mango and almond. Some botanists also include the fruits of walnuts, pecans, date palms, macadamia nuts, pistachio nuts, tung oil and kukui nuts as drupes because of their outer, green, fleshy husk and stony, seed-bearing endocarp. These latter fruits are also called drupaceous nuts. The coconut is considered a dry drupe with a green, waterproof outer layer (exocarp), a thick, buoyant, fibrous husk (mesocarp) and a hard, woody, inner layer (endocarp) surrounding the large seed. The actual seed embryo is embedded in the coconut meat (endosperm). Nutrient-rich coconut milk is liquid endosperm that has not formed firm tissue with cell walls. According to Spjut (1994), the fruit of a coconut (Cocos) is a "nucleanium." [There is considerable disagreement among authorities about the classification of some of these fruits. For example, the California Macadamia Society considers the macadamia nut to be a follicle. See section B-1 below under dry, dehiscent fruits.]
Note: A number of so-called nuts are probably better placed in the drupe category. This is especially true of the walnut family (Juglandaceae), although some older references still consider these fruits to be nuts. In hickory & pecan (Carya) the outer husk or shuck splits into four valves, exposing the hard, indehiscent nut . According to many botanists, the outer husk is part of the pericarp, and the hard, inner layer surrounding the seed is the endocarp; therefore, these fruits are technically drupes or drupaceous nuts. Walnut & butternut (Juglans), two additional members of the walnut family (Juglandaceae), have similar drupe-like fruits. The outer green husk resembles the outer pericarp (exocarp and mesocarp) of a drupe. For this reason, walnuts are sometimes referred to as dry drupes, and the hard shell surrounding the seed is considered to be the endocarp layer as in coconuts. In true nuts, the hard, indehiscent layer surrounding the seed is the entire ovary wall or pericarp, and the outer husk is composed of involucral tissue that is not part of the ovary wall or pericarp. According to most botanical references, the outer green layer (husk) of the walnut is part of the pericarp and the hard shell surrounding the seed is really the endocarp. Therefore, walnuts and pecans probably fit the dry drupe category rather than a true nut. Some authors elegantly avoid this dilemma by calling these fruits drupe-like or "drupaceous nuts."
Verified answer
Aggregate Fruits: A cluster or aggregation of many ripened ovaries (fruits) produced from a single flower. In blackberries and raspberries (Rubus), the individual fruits are tiny, one-seeded drupes or drupelets. Since all the seed-bearing ovaries (carpels) form a fused cluster, the fruit is also called a syncarp.
4. Drupe: Fleshy fruit with hard inner layer (endocarp or stone) surrounding the seed. E.g. peach, plum, nectarine, apricot, cherry, olive, mango and almond. Some botanists also include the fruits of walnuts, pecans, date palms, macadamia nuts, pistachio nuts, tung oil and kukui nuts as drupes because of their outer, green, fleshy husk and stony, seed-bearing endocarp. These latter fruits are also called drupaceous nuts. The coconut is considered a dry drupe with a green, waterproof outer layer (exocarp), a thick, buoyant, fibrous husk (mesocarp) and a hard, woody, inner layer (endocarp) surrounding the large seed. The actual seed embryo is embedded in the coconut meat (endosperm). Nutrient-rich coconut milk is liquid endosperm that has not formed firm tissue with cell walls. According to Spjut (1994), the fruit of a coconut (Cocos) is a "nucleanium." [There is considerable disagreement among authorities about the classification of some of these fruits. For example, the California Macadamia Society considers the macadamia nut to be a follicle. See section B-1 below under dry, dehiscent fruits.]
Note: A number of so-called nuts are probably better placed in the drupe category. This is especially true of the walnut family (Juglandaceae), although some older references still consider these fruits to be nuts. In hickory & pecan (Carya) the outer husk or shuck splits into four valves, exposing the hard, indehiscent nut . According to many botanists, the outer husk is part of the pericarp, and the hard, inner layer surrounding the seed is the endocarp; therefore, these fruits are technically drupes or drupaceous nuts. Walnut & butternut (Juglans), two additional members of the walnut family (Juglandaceae), have similar drupe-like fruits. The outer green husk resembles the outer pericarp (exocarp and mesocarp) of a drupe. For this reason, walnuts are sometimes referred to as dry drupes, and the hard shell surrounding the seed is considered to be the endocarp layer as in coconuts. In true nuts, the hard, indehiscent layer surrounding the seed is the entire ovary wall or pericarp, and the outer husk is composed of involucral tissue that is not part of the ovary wall or pericarp. According to most botanical references, the outer green layer (husk) of the walnut is part of the pericarp and the hard shell surrounding the seed is really the endocarp. Therefore, walnuts and pecans probably fit the dry drupe category rather than a true nut. Some authors elegantly avoid this dilemma by calling these fruits drupe-like or "drupaceous nuts."