Bio Flashcards
Cladogram of plant evolution
Charophytes, bryophytes, pteridophytes, gymnosperms, angiosperms
Lignin
Strengthens cell wall
Charophytes
Algae (first form of plant)
bryophytes
Mosses
pteridophytes
Ferns
gymnosperms
Conifers
angiosperms
Flowering plants
Nectar
Used by the plant to lure in pollinators
Gamete
Sex cells such as an egg or sperm
Tube nucleus
Creates a tube through the style to the ovary (24-48 hours)
Rhizomes
Stem below ground that can make baby plants
Example: fern and ginger
Runner
Stem with baby attached above ground
Cuttings
Cut off a leaf and put it in dirt and roots will grow
Grafting
Joining 2 different parts from 2 different plants to make one
Example: miniature rose bush
Tissue Culture
Each plant cell can create a whole new plant, cells can be placed in sterile nutrient agar and new plants will grow
Annual plants
Lives for 1 year
Biannual plant
Lives for 2 years
Perennial plants
Live for many years
Mitosis
Division of the nucleus in cells that aren’t gametes
DNA
Deoxyribonucleic Acid
Chromatid
One of two identical parts of of a duplicated chromosome
Centromere
Where the two sister chromatids meet and are held together
Chromosome
Genetic information bundled into packages of DNA
Makes it possible to separate DNA precisely durning cell division
Chromatin
Unwound DNA and proteins called histones.
Found in the nucleus of non-dividing cells