3: Plant Systematics Flashcards
Theophrastus 371-287 BC
Father of botany
collected and named 500 species from mediterranean
Carl Linnaeus
created binomial system of classification
Taxonomic Hierarchy
Kingdom Phylum Class Order Family Genus species
What does ORDER end in
-ales
What does FAMILY end in
-aceae
Basic flower structure
flower is a specialised reproductive shoot
contains 4 different whorls of organs
4 whorl organs
Outer two whorls
1) calyx
2) corolla
3) stamens
4) carpels
What is the calyx made up of
sepals
What is the corolla made up of
petals
what are stamens
male reproductive organ
what are carpels
female reproductive organ
what are the accessory flower parts
perianth
what is the perianth made up of
calyx and corolla
Female structures
Carpel
1) ovary
2) style
3) stigma (sticky to catch pollen)
Male structures
Stamen
Anther
Filament
Floral evolution
primitive to advance
Reduction
Fusion
Specialisation
Example of reduction
number of flower parts (male/female parts)
Example of fusion
Flower part fused together in arum lily (brat)
sepal and petals fused
female fused to male parts