Meristems Flashcards
What are the names given for root and shoot tips with meristematic properties?
Apices
Buds
Meristems
Define tissue
A tissue is a group of one or more cell types which carries out specialized function/s
What are known as meristems
Undifferentiated tissues in plants that consist of cells which constantly divide under suitable conditions and produce new cells
Do meristems have dormant period
Yes
What is the function of mersitem
Add new cells and subsequently these cells differentiate and plant growth occur by making new plant tissues.
What is the function of mersitem
Add new cells and subsequently these cells differentiate and plant growth occur by making new plant tissues.
What are the characteristics of meristematic cells?
- Living cells
- Isodiametric (roughly spherically)
- Structurally and functionally undifferentiated.
- Have a central nucleus
- Have a dense cytoplasm
- Have the ability to multiply.
What are the three overlapping zones of cells
Cell division
Cell elongation
Cell differentiation
What are the three types of meristems
Apical meristem
Lateral meristems
Intercalary meristems
What are the three types of meristems
Apical meristem
Lateral meristems
Intercalary meristems
What are the locations of apical meristems
Root and shoot tips
What are the locations of apical meristems
Root and shoot tips
What is the function of apical meristem
They add new cells that enable increase in length by the process of cell growth
What is the function of apical meristem
They add new cells that enable increase in length by the process of cell growth
What are the two lateral meristems
Vascular cambium
Cork cambium
What are the two lateral meristems
Vascular cambium
Cork cambium
In what type of plants are lateral meristems found
Woody plants
What is the function of lateral meristems
Involve in secondary growth in increasing circumference of roots and stems
What is the function of lateral meristems
Involve in secondary growth in increasing circumference of roots and stems
What does the vascular cambium produce
Secondary xylem
Secondary phloem
What does the cork cambium produce
Thick tough periderm replacing the epiderm
What plant have intercalary meristem
Some monocots such as grasses
What plant have intercalary meristem
Some monocots such as grasses
What is the location of intercalary meristems
Bases of stems and leaves
What is the function of intercalary meristems
Allow rapid regrowth in damaged leaves
