major s characteristics of pteridophytes

Pteridophytes - The division Pteridophyta includes a group of primitive vascular plants, commonly called pteridophytes. The adult plant body in these plants is a sporophyte. It shows differentiation into true roots, stem and leaves. The stem is mostly herbaceous . Leaves may be ..

The division Pteridophyta includes a group of primitive vascular plants, commonly called pteridophytes. The adult plant body in these plants is a sporophyte. It shows differentiation into true roots, stem and leaves. The stem is mostly herbaceous. Leaves may be smaller or larger. Va..

Identify an arc that represents a major arc in the circle shown. => Arc O P S or Arc P Q R or Arc P S R or Arc O Q R..

There are six main categories of air pollutants: oxides of carbon sulphur dioxide oxides of nitrogen hydrocarbon inorganic particulate matter and aerosols organic particulate matte..

During the 1980′s, the largest major earthquakes around the world registered 7.3, 7.2, 7.7, 8.1, and 7.8 on the Richter scale. Which list shows the readings in order from greatest to least? => 8.1, 7.8, 7.7, 7.3, and 7.2 or 8.1, 7.2, 7.3, 7.7, and 7.8 or 7.2, 7.3, 7.7, 7.8..

Protists can be broadly distinguished into three major groups, namely 1. Photosynthetic protists 2. Slime moulds and 3. Protozoan protis..

Biome is a large, regional or sub continental biosystem characterized by a major vegetation type or other distinct landscape characters such as tropical deciduous forest, tundra biome, et..

Major Phyla of the Animal Kingdom - There are 10 major phyla in the animal kingdom from Protozoa to Chordata. Of these, phylum Protozoa is now placed in the kingdom Protista. The remaining nine phyla include true multicellular animals. Of these nearly 95% represent the invertebr..

There are 10 major phyla in the animal kingdom from Protozoa to Chordata. Of these, phylum Protozoa is now placed in the kingdom Protista. The remaining nine phyla include true multicellular animals. Of these nearly 95% represent the invertebrates and about 5% represent the vertebrates. T..