Apogamy
the as-xual development of a sporophyte from a cell or cells of the gametophyte other than the egg.
historical examples
apogamy, of course, answers to indiscriminate isolation, or separate breeding.
darwin, and after darwin (vol 3 of 3) george john romanes
other names for indiscriminate isolation are separate breeding and apogamy.
the making of species douglas dewar
isolation, then, is a genus, of which apogamy and h-m-gamy are species.
darwin, and after darwin (vol 3 of 3) george john romanes
noun
a type of reproduction, occurring in some ferns, in which the sporophyte develops from the gametophyte without fusion of gametes
the development of a diploid cell in the embryo sac of flowering plants into an embryo without being fertilized
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- Apogee
astronomy. the point in the orbit of a heavenly body, especially the moon, or of a man-made satellite at which it is farthest from the earth. compare . the highest or most distant point; climax. contemporary examples it reaches its apogee in bodrum, since nowhere in turkey is the produce and seafood fresher or more […]
- Apogeic
astronomy. the point in the orbit of a heavenly body, especially the moon, or of a man-made satellite at which it is farthest from the earth. compare . the highest or most distant point; climax. noun the point in its orbit around the earth when the moon or an artificial satellite is at its greatest […]
- Apogeotropism
growth or orientation away from the earth; negative . noun negative geotropism, as shown by plant stems
- Apograph
(defs 1, 2).
- Apokatastasis
. the state of being restored or reestablished; rest-tution. the doctrine that satan and all sinners will ultimately be restored to g-d.