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18 Cards in this Set
- Front
- Back
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Double Fertilization |
is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm). |
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Embryogenesis |
The formation and development of an embryo. |
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Pollen Tube |
Hollow tube that develops from a pollen grain when deposited on the stigma of a flower. It penetrates the style and conveys the male gametes to the ovule |
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Endosperm |
The part of a seed that acts as a food store for the developing plant embryo, usually containing starch with protein and other nutrients |
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Apical - basal |
A membrane facing the outside surface of the body, or the lumen of internal cavities, and the basolateral membrane oriented away from the lumen. |
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Shoot |
Cotyledon and hypocotyl make up this section, which is the above ground of this portion |
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Meristem |
Consists of undifferentiated cells that divide repeatedly, with some daughter cells becoming specialized cells |
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Auxin |
A plant hormone that causes the elongation of cells in shoots and is involved in regulating plant growth. |
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Shoot Apical Meristem (SAM) |
Is a population of cells located at the tip of the shoot axis. It produces lateral organs, stem tissues and regenerates itself. |
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Root Apical Meristem (RAM) |
Is the region within the growing root containing meristematic cells. At the heart of the root apical meristem are the cells of the quiescent centre. |
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Reproductive Development |
System is a part of prenatal development, and concerns the sex organs. It is a part of the stages of sexual differentiation. |
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Alteration of Generations |
A pattern of reproduction occurring in the life cycles of many lower plants and some invertebrates, involving a regular alternation between two distinct forms. The generations are alternately sexual and asexual (as in ferns) or dioecious and parthenogenetic (as in some jellyfish). |
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Pollen Grain |
Each of the microscopic particles, typically single cells, of which pollen is composed. Pollen grains have a tough coat that has a form characteristic of the plant producing it |
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Embryo Sac |
A cell inside the ovule of a flowering plant where fertilization occurs and which becomes the female gametophyte, containing the endosperm nucleus and the fertilized ovum that develops into the embryo. |
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Anther |
The part of a stamen that contains the pollen. |
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Fillament |
A slender threadlike object or fiber, especially one found in animal or plant structures. |
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Hypocotyle |
The part of the stem of an embryo plant beneath the stalks of the seed leaves, or cotyledons, and directly above the root. |
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Cotyledons |
An embryonic leaf in seed-bearing plants, one or more of which are the first leaves to appear from a germinating seed. |
