A little farther along, Nishka stopped at two groups of plants, side by side, which looked identical to me.
We often describe groups of plants or animals as being worldwide in distribution, but what we normally mean is within the bounds of limited and suitable habitats.
The same approach can be used to estimate recent extinction rates for various other groups of plants and animals.
The character and relative extent of the two phases vary greatly among different groups of plants and algae.
Australia also shares many groups of plants with the Malesian region (the Malay Archipelago) to the north.
The wide variety of shrubs excludes proteoids, while some common groups of plants in the north such as oaks (Quercus) do not occur in the south.
Climate and conditions throughout the Earth's history can be studied using the successive groups of plants and animals because they reflect their environment.
With high statistical confidence, they are typical of the many groups of plants and animals about which too little is known to document their extinction.
For a comparison of angiosperms with the other major groups of plants, see plant, bryophyte, fern, lower vascular plant, and gymnosperm.
All major groups of plants have naturally polyploid species, but they are most common among angiosperms, or flowering plants, of which about 47 percent are polyploids.
Dr. Blair said the work suggested that biologists might need to rethink the dating of some of the more modern groups of plants, like the flowering plants and species like corn and rice.
