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Living cells can be divided into two types – prokaryotic and eukaryotic. This division is based on internal complexity of the cells. The eukaryotic cells are mostly the cells of protozoa, higher plants and animals. These cells are larger than the cells of bacteria, and have developed specialized packaging and transport mechanisms that may be necessary to support their larger size. Prokaryotic cells are simple in structure, with no recognizable organelles. They have an outer cell wall that gives them shape. Just under the rigid cell wall is the more fluid cell membrane. The cytoplasm enclosed within the cell membrane does not exhibit much structure.
Like other eukaryotic cells, the plant cell is enclosed by a plasma membrane, which forms a selective barrier allowing nutrients to enter and waste products to leave from the cell. Unlike other eukaryotes, however, plant cells have a significant feature of their prokaryote ancestry, a rigid cell wall surrounding the plasma membrane. The cytoplasm contains specialized organelles, each of which is surrounded by a membrane. Plant cells lack centrioles and organelles for locomotion but they do have additional specialized organelles. Chloroplasts convert light to chemical energy, a single large vacuole acts as a water reservoir, and Plasmodesmata allow cytoplasmic substances to pass directly from one cell to another. There is only one nucleus and it contains all the genetic information necessary for cell growth and reproduction. The other organelles occur in multiple copies and carry out the various functions of the cell, allowing it to survive and participate in the functioning of the larger organism.
Models of the plant cell help the scientist’s show how a science concept works. You can also make a plant cell model, just follow these instructions carefully:
List and gather possible materials needed for the plant cell model. Find the parts of a particular plant cell in biology textbook. Common parts to plant cells include the cell wall, cell membrane, chlorophyll and nucleus and a vacuole. Now construct a base for the model. A heavy sturdy wooden base works best but you may use a thick sheet of thermocol instead.
This will hold the weight of the plant cell model. Now proceed to build the nucleus. A cell nucleus is always round, tennis ball or other ball work as a nucleus perfectly. Now it is the time to attach the nucleus to the base using a dowel rod or thick, straight stick. Add a cell wall and a cell membrane. Plant cells have two different walls that give it a rectangular shape.
The outer wall is a cell wall and is made of a harder material. It’s what gives plants more protection. Use hard plastic or wood to represent the cell wall. Use cellophane or thin plastic for the cell membrane. Attach the cell wall and membrane to the nucleus and base. Now put in other key components of a plant cell. Chlorophyll is a plant cell body that gives the plant cell its green color. Make a chlorophyll part by using a piece of green fabric and stuff it with cotton or other stuffing material. Sew it up and attach it to the plant cell model. Write a brief synopsis for part of the plant cell and label the parts.