| 1. | The magnoliales are not seen as an ancestral group .
木兰目不能看作是一个祖先类群。 |
| 2. | The group which they delimit are called natural groups .
由此划分出的类群称为自然类群。 |
| 3. | This depends on their constancy throughout many allied groups .
这取决于它们在许多近缘类群中的稳定性。 |
| 4. | Another special group of water plants is formed by the haptophytes .
水生植物的另一特殊类群由附着水生植物构成。 |
| 5. | He divided plants into major groups: cellulares and vasculares .
他将植物化分为两个较大的类群：细胞类植物和维管类植物。 |
| 6. | A taxon is any taxonomic grouping, such as a phylum, a family or a species .
分类群是指任何一个分类学上的类群，如门、科或种。 |
| 7. | Soil micro-organisms constitute a diverse and ubiquitous group of organisms .
土壤微生物是由完全不同的和无孔不入的有机体类群所组成。 |
| 8. | Taxa which occur only in single restricted geographical areas are known as endemics .
仅仅出现于单个有限地理区域的分类群称为特有类群。 |
| 9. | Autotrophic mutants were prepared from six different stocks of a special group .
自养突变体是从一个特别类群的6个不同的原种菌系制备的。 |
| 10. | Individuals of these two lineages may have avoided one another for a number of reasons .
这两个世系血统不同的类群彼此相互隔绝，可以有种种理由。 |
