Plants Flashcards
(13 cards)
Auxins
Group of hormones responsible for cell elongation. Have a role in cell differentiation.
Stems
Produce leaves/branches. Support plant with turgid cells, strengthened cellulose walls, xylem tissue with lignin
Leaves
Absorb light, gas exchange, water/sugar transport, water conservation; support
Factors influencing transpiration
Light, temperature, wind, humidity.
Pollination
Pollen from one flower comes into contact with the stigma of another
Conditions for germination
Water, oxygen, warmth
Photo chromed
Plant pigment responsible for flowering
Pr
Absorbs red light and is converted into pfr
Pfr
Reverts back into pr in the darkness
Meristems
Stem cells that let plants grow indefinitely. Apical or lateral.
Apical
located at tip of shoots and roots. Vertical growth. Growth of leaves.
Lateral
Complete circle around stem. Grows stem/trunk. Found in dicots only. Xylem grows inside ring; phloem outside.
Roots
Anchor plant, absorb water/mineral ions.