. Elements of plant biology. Plant physiology. Fig. 23.—Conjugation of Chlamydomonas mpnadina. a. Beginning of fusion of the small (male) and large (femaJe) gamete. (Note that each has the normal structure of a vegetative Chlamy- ) b, Further stage of fusion (drawn on a larger scale). Note the central area of colourless cytoplasm, derived from the front ends of the two gametes, and now containing the two nuclei (equal in size) in contact but not yet fused, c. Spherical zygote formed within the cell wall of tiie female gamete and itself clothed with a. cell wall. Note that the two
. Elements of plant biology. Plant physiology. Fig. 23.—Conjugation of Chlamydomonas mpnadina. a. Beginning of fusion of the small (male) and large (femaJe) gamete. (Note that each has the normal structure of a vegetative Chlamy- ) b, Further stage of fusion (drawn on a larger scale). Note the central area of colourless cytoplasm, derived from the front ends of the two gametes, and now containing the two nuclei (equal in size) in contact but not yet fused, c. Spherical zygote formed within the cell wall of tiie female gamete and itself clothed with a. cell wall. Note that the two gamete nuclei have now fused to form the single zygote nucleus, but the chloroplasts are still separate. (After Goroschankin.) to be attracted equally strongly towards the other, the body of the small one would be more easily drawn through the comparatively narrow canal formed between them ; and this conclusion is supported by the unusual cases figured in Fig. 24. Here the gametes have come into contact obliquely, or have swung round after con- tact, so that no canal is formed, btit the protoplasm of both sHps out of its cell wall and the two form a zygote. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tansley, Arthur George, 1871-. London, George Allen & Unwin Ltd. ; New York, Dodd, Mead & Co
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectplantph, bookyear1922
