Textbook of Theoretical Botany, Volume 2 |
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Page 1483
... seeds are large . The size of seeds is also largely a resultant of their conditions of growth . In plants with very numerous seeds they are generally small ( Hypericum , Jasione , Digitalis , Orchis ) ; the less numerous seeds of ...
... seeds are large . The size of seeds is also largely a resultant of their conditions of growth . In plants with very numerous seeds they are generally small ( Hypericum , Jasione , Digitalis , Orchis ) ; the less numerous seeds of ...
Page 1505
... seeds of wild plants are very variable in their periods of dormancy . Even seeds from the same ovary may behave very differently and their germination times be spread over a period of several years . This variability is chiefly ...
... seeds of wild plants are very variable in their periods of dormancy . Even seeds from the same ovary may behave very differently and their germination times be spread over a period of several years . This variability is chiefly ...
Page 1514
... seeds which are wind - dispersed . Dust - seeds form the smallest and lightest group of seeds . In addition to their minute size and light weight , they often have the advantage of having a flattened , wing - like testa ( Rhododendron ...
... seeds which are wind - dispersed . Dust - seeds form the smallest and lightest group of seeds . In addition to their minute size and light weight , they often have the advantage of having a flattened , wing - like testa ( Rhododendron ...
Contents
FLOWERS | 1071 |
POLLINATION AN INTRODUCTION | 1252 |
SEEDS FRUITS AND SEEDLINGS | 1481 |
2 other sections not shown
Common terms and phrases
actinomorphic anatropous androecium Angiosperms anthers antipodal apex axile axis basal base bracts calyx capsule carpels cells colour common contains corolla corolla tube cotyledons cross-pollination cultivated dehisce Dicotyledons dispersal distributed elongated embryo sac enclosed endosperm example female flowers fertilization filaments fleshy floral florets Flowering shoot flowers Fig fruit funicle gardens genera genus germination gynoecium hairs herbs hermaphrodite hypocotyl important inflorescence inner insect integument involucre later layer leaf leaves lobes loculus male flowers margins mature micropyle Monocotyledons nectar Nectar is secreted normal nucellus nuclei occur oosphere outer ovary ovules parietal perianth perianth segments petaloid petals placenta plants pollen grains pollen tube pollination mechanism produced rarely receptacle rhizome seeds self-pollination sepals separate showing shrubs single sometimes species stage stamens stem sterile stigma structure style sub-family surface testa tissue trees tropical unisexual usually vegetative visited wall whorl zygomorphic