The Pteridopyhta, phylum of seedless vascular plants has about 1000 known living species, including those in the genera Lycopodium and Selaginella; the gametophyte of some of these species cannot photosynthesize, and instead uses mycorrhizae to obtain nutrients.
Explanation:
The pteridophytes, most advanced group of plant among the cryptogams i.e. seedless plants.
They are first land plants that have developed a well defined vascular system.
Ferns, horsetails etc are common members of this phylum.
Your answer should be A. by observing the formation of sedimentary rocks.
Answer:
Explanation:
They are probably archeabacteria because the colony lives in an extreme environment.
Explanation:
Archeabacteria are singled cell microorganisms that live in extreme environment. They are found in hot springs, salt lakes, oceans, soils and marshlands. They posses different shapes like rods, spheres, spiral and plates. Thermophiles, halophiles, and methanogens are the three types of archeabacteria.
Eubacteria are microorganisms that are found in most of the earth's habitats like soil, water, etc. They are have different shapes like cocci, bacilli, filaments, vibro,etc. They do not live in extreme environment unlike the archeabacteria. This is the major difference between the archeabacteria and eubacteria.
Both archeabacteria and eubacteria
are prokaryotes. Archeabacteria can both be autotrophic or heterotrophic and can live in places without oxygen. Some eubacteria are autotrophs and some are heterotrophs.
