PLANTS Flashcards
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
What are the 2 types of roots?
1) fibrous root
2) tap roots
