Root Systems (Leaving Cert Biology): Flashcards
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Three types of root systems
Three types of root systems
Tap, fibrous, adventitious
Main characteristic of tap roots
Main characteristic of tap roots
Have a main root with lateral roots growing from it
Plant type with tap root systems
Plant type with tap root systems
Dicotyledons (dicots)
Main characteristic of fibrous roots
Main characteristic of fibrous roots
Many roots all the same size
Plant type with fibrous root systems
Plant type with fibrous root systems
Monocotyledons (monocots)
Definition of adventitious roots
Definition of adventitious roots
Roots that grow in unusual or unexpected places
Function of root cap (zone of protection)
Function of root cap (zone of protection)
Protects root tip as it grows through soil
What happens in meristematic zone
What happens in meristematic zone
Cell division (mitosis) takes place
Location of apical meristems
Location of apical meristems
Root and shoot tips
What happens in zone of elongation
What happens in zone of elongation
Auxins stimulate cells to grow longer
What happens in zone of differentiation
What happens in zone of differentiation
Cells develop into different types of tissues
Function of dermal tissue
Function of dermal tissue
Protects the plant
Components of vascular tissue
Components of vascular tissue
Xylem and phloem
Function of root hairs
Function of root hairs
Increase surface area for water and nutrient absorption
Pattern formed by xylem in vascular tissue
Pattern formed by xylem in vascular tissue
Forms an 'X' shape