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reproduction
| Term | Definition |
|---|---|
| Fruit | a protective container in which seeds nurtured. |
| pedicel | tip of the flower stalk |
| receptacle | the stem tip bearing the flowering parts |
| meristem | area of cellular division |
| apical meristem | area of growth, tip of roots and shoots contributes to length. with primary growth. |
| perfect flower | has both male and female parts on one flower |
| imperfect flower | doesn't have both female and male it only has either male flowers or female flowers |
| complete flower | having all of the customary parts |
| incomplete flowers | blossoms lacking one or more of the usual parts |
| sepals | scales around the unopened bud, may be shed by the opening bud, or may curl backwards as the next ring of modified leaves unfold. |
| caylex | the outer whorl grouping the sepals togather |
| petals | flowers showpiece, visual attractant catching the attention of passing insects, birds and people |
| corolla | composed of one or more layer of petals |
| perianth | caylex and corolla make up this. |
| tepal | perianth consists of only one whorl of modified leaves. ex tulip |
| bract | a modified leaf arising below a flower or inflorescence |
| pericarp | the fruit wall, derived from the ovary wall. |
| buds | |
| stamens | consists of the stalk and the filament |
| filament | bears an anther on the tip |
| anther | where the pollen develops |
| pollen | fine dust-like grains and contain two cells |
| sperm | male sex cell |
| pistil | female part of the flower, divided into three stems |
| stigma | on top sticky receptive surface to which pollen adheares |
| style | elevates the stigma into a favorable position for pollen collection |
| ovary | at the base , ultimately becomes a fruit and contains one or more developed seeds, where the sperm and egg meet |
| ovules | in each of which an egg waits to be fertilized by a sperm |
| pollen grains | |
| pollen tubes | penetrates the pistils tissue in search of a microscopic opening in one of the ovules; located in the ovary |
| eggs | female sex cell |
| zygote | the product of union of an egg and sperm |
| angiosperm | a member of a class of plants characterized by formation of fluerens and seeds in fruits |
| diecious | having male and female sex organs in separate individuals |
| monecious | bearing separate male and female flowers on the same plant |
| nectar | nutritious liquid |
| nectaries | special glands at base of petals , pistil, and stamen exclude droplets of nectar |
| parthenocarpy | development of a fruit without pollination, fertilization or seed development |
| spike | flowers are attached to the stem without stalks |
| raceme | flowers are attached to the main stem by short stalks |
| panicle | a highly branched inflorescence |
| umbel | the flower stalks arise from one point at the top of the stem |
| composite head | an inflorescence composed of many tightly packed small flowers |
| disc flowers | a small, tubular flower at the center of a composite head |
| ray flowers | are often sterile, one of several small flowers often forming a ring around the disc flowers in a composite head |
| spathe | a large bract enclosing the spadix |
| spadix | a type of spike in which seperate male and female flowers are borne on a central collum |
| simple fruit: berry | a flower derived from a single ovary. Ex tomatoes, oranges, grape melon |
| aggregate fruits | a flower having many ovaries |
| multiple fruits | best exemplified by a pineapple. surface has pericarps each derived from a flower with one ovary. when mature they become one enfused edible mass |
| Drupe | stone fruits , pit is hard and contains one seed. Ex peach, apricot , plum , cherry. edible portions of most fruits develop from an ovary wall |
| pomes | fruit derived from the perianth tissue . tissue of sepals and petals. Ex apples and pears. longer shelf life with cold temperature. |
Created by:
Dirtbikes1234
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