Plant tissues slides

Plant tissues slides

• 4.
   Dermal tissue Ground tissues  Vascular tissue
• 6.
   Consists ofthe epidermis and the periderm  Epidermis is a single layer of closely packed cells  It also covers and protects the plant
• 7.
   Epidermis ofthe plant’s leaves secretes a coating called cuticle  Cuticle helps the plant retain water  Guard cells in the epidermis regulate gas exchange between the plants and the environment
• 9.
   It synthesizeorganic compounds  Supports and provide storage for the plant  It is made up of Parenchyma, Collenchyma and sclerenchyma cells
• 10.
   Parenchyma cellssynthesize and store organic products in the plants  Parenchyma cells in leaves control photosynthesis  Collenchyma cells have a support function in plants
• 11.
   They donot restrain growth due to their lack of secondary cells and absence of a hardening agent in their primary walls  Sclerenchyma cells also have support function in plants but they have a hardening agent and are much more rigid
• 13.
   It ismade up of xylem and phloem  The xylem and phloem allows water and other nutrients to be transported throughout the plant  Xylem is made up of two cells called tracheids and vessel elements
• 14.
   Tracheids andvessel elements form tube shaped structures that provide pathways for water and minerals to travel from the roots to the leaves  Tracheids are found in all vascular plants  Vessels are found only in angiosperms
• 15.
   Tracheids arenon-living  Phloem consists of cells called sieve tubes and companion cells  The cells assist in the transportation of nutrients and sugar produced during photosynthesis from leaves to the other parts of the plant
• 16.
   Sieve-tubes andcompanion cells of phloem are living  Companion cells contain nucleus and actively transport sugar into and out of the sieve tubes
• 17.
  http://biology.about.com/od/plantbiology /ss/plant-tissue-systems_2.htm