Roots Flashcards
Roots are
Descending axis of a plant
Roots develop from
Radical of germinating seeds
Root is
Positively geotrophic
Root is negatively
Photographic
Root is positively
Hydrotrophic
Positively geotrophic
Growing with the direction of gravity that is downwards
Negatively geotrophic
Growing against the direction of gravity that is upwards
Positively phototrophic
Growing towards light
Negatively phototrophic
Growing away from light
Positively hydrotrophic
Growing towards presence of moisture
Negatively hydrotrophic
Growing away from presence of moisture
Roots are of two types
Tap roots and Adventitious roots
Tap roots are seen in
Dicots
Adventitious roots are seen in
Monocots
Adventitious roots are also known as
Fibrous roots
Basic functions of root
Anchoring and supporting plant , absorbing water and minerals, storing food
Aerating roots
Roots rising above ground
Aerating roots are seen in
Mangroves
Aerial roots
Roots entirely above ground for water and nutrition intake
Aerial roots are seen in
Orchids
Structural roots
Provide mechanical structure to huge plants
Structural roots are seen in
Banyan
Storage roots
Roots modified for storage of food
Storage roots are seen in
Sweet potato
