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What are angiosperm plants?
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Mar 29, 2024 · Angiosperm, any of about 300,000 species of flowering plants, the largest and most diverse group in the plant kingdom. Angiosperms are vascular seed plants in which the ovule is fertilized and develops into a seed in an enclosed ovary. Learn about angiosperm characteristics, evolution, and importance.
- General Features
The variety of forms found among angiosperms is greater than...
- Classification
Classification Diagnostic classification General...
- Meristem
meristem, region of cells capable of division and growth in...
- Structure and Function
The tissues of each of these systems are composed of cells...
- Reproduction
Reproduction General features. The vast array of angiosperm...
- Ground Tissue
The ground tissue system arises from a ground tissue...
- Stems
The two modes of axillary branching in angiosperms are...
- Fertilization and Embryogenesis
Angiosperm - Fertilization, Embryogenesis, Pollination:...
- General Features
Apr 28, 2017 · Angiosperm Definition. Angiosperms are a major division of plant life, which make up the majority of all plants on Earth. Angiosperm plants produce seeds encased in “fruits,” which include the fruits that you eat, but which also includes plants you might not think of as fruits, such as maple seeds, acorns, beans, wheat, rice, and corn.
Angiosperms are classified in a single phylum: the Anthophyta. Modern angiosperms appear to be a monophyletic group, which means that they originate from a single ancestor. Flowering plants are divided into two major groups, according to the structure of the cotyledons, pollen grains, and other structures.
- Flowering Plant Parts
- Woody and Herbaceous Plants
- Angiosperm Life Cycle
- Monocots and Dicots
- Key Takeaway: Angiosperms
The parts of a flowering plant are characterized by two basic systems: a root system and a shoot system. The root system is typically below ground and serves to acquire nutrients and anchor the plant in the soil. The shoot system consists of the stems, leaves, and flowers. These two systems are connected by vascular tissue. Vascular tissues called ...
Angiosperms can be woody or herbaceous. Woody plants contain secondary tissue (bark) that surrounds the stem. They can live for several years. Examples of woody plants include trees and some shrubs. Herbaceous plantslack woody stems and are classified as annuals, biennials, and perennials. Annuals live for one year or season, biennials live for two...
Angiosperms grow and reproduce by a process called alternation of generations. They cycle between an asexual phase and a sexual phase. The asexual phase is called the sporophyte generation as it involves the production of spores. The sexual phase involves the production of gametes and is called the gametophyte generation. Male and female gametes de...
Angiosperms can be divided into two main classes depending on seed type. Angiosperms with seeds that possess two seed leaves after germination are called dicots (dicotyledons). Those with a single seed leaf are called monocots (monocotyledons). These plants also differ in the structure of their roots, stems, leaves, and flowers. Examples of monocot...
Angiospermsare plants that produce flowers. Flowering plants also produce fruit which covers and protects angiosperm seeds.Angiosperms are organized into a root system and a shoot system. The supportive roots are below ground. The shoot system is composed of the stems, leaves, and flowers.Two types of angiosperms are woody and herbaceous plants. Woody plants include trees and some shrubs. Herbaceous plantsinclude beans and corn.Angiosperms cycle between an asexual phase and a sexual phase by the process of alternation of generations.Within the angiosperms are three major groups: basal angiosperms, monocots, and dicots. Basal angiosperms are a group of plants that are believed to have branched off before the separation of the monocots and eudicots, because they exhibit traits from both groups.
OpenStax. Learning Objectives. By the end of this section, you will be able to do the following: Explain why angiosperms are the dominant form of plant life in most terrestrial ecosystems. Describe the main parts of a flower and their functions. Detail the life cycle of a typical gymnosperm and angiosperm.
Angiosperms are flowering plants that dominate most terrestrial ecosystems and provide many essential products and services for humans. In this chapter, you will learn about the diversity, evolution, structure, and reproduction of angiosperms, as well as their interactions with other organisms. This chapter is part of the Biology textbook from the University of Hawaiʻi Pressbooks, a platform ...
