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May 18, 2024 · Botany is the scientific study of plants and plant-like organisms. It helps us understand why plants are so vitally important to the world. Plants start the majority of food and energy chains, they provide us with oxygen, food and medicine. Plants can be divided into two groups: plants 1 1 and plants 2 2. Plants 1 1 contain all photosynthetic ...
- Styles of Life and Basic Chemistry
No headers. Life obtains energy in a few different ways: (1)...
- Alexey Shipunov
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- Styles of Life and Basic Chemistry
10.3A Introduction to the Plant Kingdom. Plants are a large and varied group of organisms. There are close to 300,000 species of catalogued plants. 1 Of these, about 260,000 are plants that produce seeds. Mosses, ferns, conifers, and flowering plants are all members of the plant kingdom. The plant kingdom contains mostly photosynthetic ...
In recent years, several plant species are attaining endangered species status, and the biodiversity on Earth is threatened. According to a 2010 study conducted by the Royal Botanic Gardens in the UK, 22% of the approximately 380,000 known plant species (or about 83,600 plant species) are endangered . It is more important than ever to turn ...
- Plant Definition
- Plant Characteristics
- Types of Plants
- Related Biology Terms
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Plants are multicellular organisms in the kingdom Plantae that use photosynthesis to make their own food. There are over 300,000 species of plants; common examples of plants include grasses, trees, and shrubs. Plants have an important role in the world’s ecosystems. They produce most of the world’s oxygen, and are important in the food chain, as ma...
Plants are autotrophs; they produce their own food. They do so via photosynthesis, which is the process of making nutrients such as sugars from light energy and carbon dioxide. Photosynthesis occurs in cell organelles called chloroplasts, which contain chlorophyll and carotenoids, molecules that absorb light energy and change it into a usable form....
Charophytes
Charophytes are complex green algae such as stoneworts. They have cells with chloroplasts, cell walls containing cellulose, and store starch, as plants do. They reproduce sexually and some have sperm with flagella (tails that allow them to move), just like some plants do. Some fossil stoneworts are very similar to modern day ones.
Bryophytes
Bryophytes are nonvascular land plants. They do not have vascular tissue, which is tissue that transports water and nutrients. They are found both on land and in water. Common examples of bryophytes are mosses, liverworts, and hornworts. Bryophytes are generally very similar to algae in their lack of a vascular system. They do have parts similar to roots, stems, and leaves, but these are not the true roots, stems, and leaves found in vascular plants. Liverworts were probably the first land pl...
Seedless Vascular Plants
Seedless vascular plants produce embryos that are not protected by seeds. Instead, they reproduce via spores. Members of this group include ferns, horsetails, quillworts, clubmosses, and spikemosses. These plants used to be called pteridophytes, but this turned out to be an inaccurate group because ferns and horsetails are more closely related to seed plants than to quillworts, clubmosses, and spikemosses. Seedless vascular plants flourished during the Devonian period and in Carboniferous for...
Eukaryotic cell– A relatively large cell with a true nucleus and organelles.Chloroplast– An organelle found in plant cells that contains chlorophyll; it is where photosynthesis takes place.Organelle– A specialized structure within a cell that carries out a certain function in that cell.Alternation of generations– The alternation of diploid and haploid stages in a plant’s life cycle.1. Which is NOT a characteristic of plants? A. Asexual reproduction B. Sexual reproduction C. Heterotrophy D.Autotrophy 2. The gametophyte is ______ and produces ______ during reproduction. A. haploid; spores B. haploid; gametes C. diploid; spores D.diploid; gametes 3. Which plant is a gymnosperm? A. Pine tree B. Apple tree C. Moss D.Fern
The Plant Kingdom. By the end of this section, you will be able to: Plants are a large and varied group of organisms. There are close to 300,000 species of catalogued plants. 1 Of these, about 260,000 are plants that produce seeds. Mosses, ferns, conifers, and flowering plants are all members of the plant kingdom.
Parallel venation is a characteristic of plants with fibrous roots and leaves. The term "plant diversity" describes the presence of numerous different plant species in their natural habitats. Vascular plants make up between 300,000 and 500,000 species worldwide.
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4 days ago · Plant, any multicellular, eukaryotic, usually photosynthetic life-form in the kingdom Plantae. There are an estimated 390,900 different species of plants known to science. Learn more about the plant kingdom, including the life and evolutionary histories and physical characteristics of the major plant groups.
