Organelles found in plant cells

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Organelles found in plant cells

• Cell Wall
• Vacuoles
• Plastids

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Cell Wall
Rigid covering around the cell membrane Contains
long chains of cellulose embedded in
protein Primary wall built first, then secondary
may be added at maturity of the cell Secondary
is tough and woody, once added the cell can no
longer grow Pores in the cell wall allow ions and
molecules to enter the cells
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Vacuoles
Fluid filled organelles used to store enzymes
metabolic wastes May take up 90 of
cells volume May store toxic wastes away from
the cell or to prevent consumption by
herbivores
vacuole
nucleus
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Plastids
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Plastid characteristics

• Like mitochondria and nucleus with double
  membrane
• Site of fat and starch storage
• Contain pigments that absorb visible light
• Impart color to fruits and vegetables yellow of
  banana, red of tomatoes, pink of flowers
• Chloroplast one of most common plastids
• system of membranous stacks thylakoids
• convert sun energy into organic compounds
• contain large quantities of chlorophyll

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Chloroplasts

• Found in Plants
• Use energy from sunlight to make food molecules
  through a process called photosynthesis

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Chromatin

• DNA bound to protein
• Most of the time it is spread throughout the
  nucleus
• Chromatin condense to form chromosomes during
  cell division
• Chromosomes are distinct threadlike structures
  containing the genetic information that is passed
  from one generation to the next

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Centrioles

• Two tiny structures located in the cytoplasm near
  the nuclear envelope
• Located in region called centrosome
• Centrioles split apart during cell division
• Organize spindle fibers during prophase
• Animal Cells only