The largest phylum grouping in the plant kingdom is angiospermophyta, which contains at least 300,000 species. Species within this phylum all undergo a common mode of reproduction wherein a plant makes flowers which consequently develop into fruits with seeds.Continue Reading
The bryophyte (15,000 species), filicinophyta (11,000 species) and lycopodophyta (1,000 species) groupings follow the angiospermophyta as the second to fourth largest groupings numerically. The remainder of the phyla classes contain somewhere from one to 600 species.
The term angiospermophyta receives its name from three Greek root words meaning a box (angos), a seed (sperma) and a plant (phyto). As the name demonstrates, this phylum is characterized by enclosed seeds in flowering plants. This phylum is largest in number likely because species from this phylum can occur in almost all the freshwater and terrestrial environments on earth. The phylum also contains a wide variety, with plants ranging from nearly microscopic to enormous trees such as oaks.Learn more about Botany
The length of time a plant can live depends on the species. There are three classifications for the length of a plant's life span: annuals live one growing season, biennials live two growing seasons and perennials live more than two growing seasons.Full Answer >
The different plant species that live in the ocean include phytoplankton, diatoms, dinoflagellates, sea-grasses, kelp and algae. These plants have special adaptation features that help them survive in the water.Full Answer >
Many plant species lived during the Quaternary Period, including bushes, shrubs, prairie grasses, birch, pine, spruce, oak, maple and flowering plants of all types. Due to ice ages, plant populations and their ecosystems increased and decreased during the past 2.6 million years of the Quaternary Period.Full Answer >
The National Snow and Ice Data Center explains that different species of plants adapt to cold weather in a variety of ways, such as growing in forms that shed snow readily or by retaining dead leaves to help insulate the plant. Unlike birds and other animals that can migrate to avoid harsh winter weather, plants must find a way to cope with the cold temperatures without leaving.Full Answer >