PLANTS Flashcards
(25 cards)
Apical dominance
Plant sends nutrients to the tips, restricts new growth
3 types of plant tissue are:
1) parenchyma
2) collenchyma
3) sclerenchyma
Parenchyma
New growth, no secondary walls
Plants metabolic functions
Collenchyma
Thick primary walls
Sclerenchyma
Secondary walls (contains lignin- poison)
Tropism
Movement toward or away from a stimulus
Phototropism
Can be positive or negative movement, attraction towards light
Salt affects
Water potential (lowers)
Root pressure
Occurs at night, low transportation
-positive water flow which increases pressure on the xylem aka vascular tissue
Guttation
Small water droplets on leaves and grass in the morning
-dew
Vascular tissue consists of
Xylem and phloem
Cohesion
Hydrogen molecules
Phloem sap=
Glucose C6H12O6
Female
Stamen
Male
Carpal
Male gametophyte is
Pollen and anther
Female gametophyte is
Ovary and stigma
A flower that is both stamen and carpal is
A perfect flower
Petals, sepals, and receptacles are
Modified leaves
Ethylene
A hormone, helps ripen fruit
Cytokines
Hormone, growth and development
-aging and controls apical dominance
Gibberellins
Hormone, stem elongation, fruit growth
Plants grow best under what kind of light?
Red and blue light
Leaf abscission
Loss of leaves