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Kingdom: Animalia: Cells have nuclei and no cell wall. Phylum: Chordata: Have backbones. Class: Mammalia: Have hair and produce milk for young. Order: Primates: Have flat faces, forward facing ...
- Figure \(\PageIndex{1}\): Alternation of generations between the haploid (1n) gametophyte and diploid (2n) sporophyte is shown. (credit: modification of work by Peter Coxhead)
- Figure \(\PageIndex{2}\): This life cycle of a fern shows alternation of generations with a dominant sporophyte stage. (credit "fern": modification of work by Cory Zanker; credit "gametophyte": modification of work by "Vlmastra"/Wikimedia Commons)
- Figure \(\PageIndex{3}\): This life cycle of a moss shows alternation of generations with a dominant gametophyte stage. (credit: modification of work by Mariana Ruiz Villareal)
- Figure \(\PageIndex{4}\): This apple seedling is an example of a plant in which the apical meristem gives rise to new shoots and root growth.
- Cell Wall. It is the outermost, protective layer of a plant cell having a thickness of 20-80 nm. Cell walls are made up of carbohydrates such as cellulose, hemicellulose, and pectin and a complex organic polymer called lignin.
- Plastids. They are double membrane-bound organelles that have their own genetic material. Plastids are mainly of three types: a) Chloroplasts: Found in the green parts of a plant and algae that contain the photosynthetic pigment, chlorophyll.
- Central Vacuole. It is the large vesicle that make up almost 30 to 80% of the total plant cell volume. The central vacuole is often the largest organelle in the cell that is filled with fluid, ions, enzymes, and other molecules.
- Cell Membrane or Plasma Membrane. It is a thin, biological membrane having a thickness of 7.5-10 nm that separates the interior of the cell from the outside environment.
Jul 11, 2019 · There are six kingdoms: Archaebacteria, Eubacteria, Protista, Fungi, Plantae and Animalia. Organisms are placed in a specific kingdom based upon a variety of factors, including cell wall structure. As the outermost layer of some cells, the cell wall helps maintain cellular shape and chemical equilibrium. Archaebacteria and Eubacteria.
Plants possess cell walls containing cellulose. Most plants reproduce sexually, but they also have diverse methods of asexual reproduction. Plants exhibit indeterminate growth, meaning they do not have a final body form, but continue to grow body mass until they die. Plant Adaptations to Life on Land.
Plants possess cell walls containing cellulose. Most plants reproduce sexually, but they also have diverse methods of asexual reproduction. Plants exhibit indeterminate growth, meaning they do not have a final body form, but continue to grow body mass until they die.
A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. These components are organized into three major layers: the...
