ANGIOSPERMS The Flowering Plants With Enclosed Seeds
KINGDOM : PLANTAE PHYLUM : TRACHEOPHYTA SUBPHYLUM : SPERMOPSIDA DIVISION : ANTHOPHYTA (Angiosperms) TWO CLASSES : 1. MONOCOTS 2. DICOTS
Angiosperms reproduce sexually through their flower parts. Angio = Vessel/Enclosed Sperm = Seed
Flower Parts MALE FEMALE
Variety of Pollen Grains Of The Three Cells Forming The Male Gametophyte – Two of these haploid cells are sperm cells used for Fertilization of the female gametophyte Pollen Grain Carries – Microscopic (3-Celled) Male Gametophyte
FEMALE GAMETOPHYTE CONSISTS OF SEVERAL CELLS THAT COLLECTIVELY ARE FEMALE GAMETOPHYTE CONSISTS OF SEVERAL CELLS THAT COLLECTIVELY ARE CALLED THE “OVULE” One Special Cell Of The Ovule (Megasporocyte) Gets Fertilized By One Of The Sperm Cells Of The Male Gametophyte Found In The Pollen Grain
ANGIOSPERM REPRODUCTION
In some plants the ovary enlarges to become a fruit Fleshy fruits aid in seed dispersal by attracting animals who eat the fruit (and therefore the seeds) and after the seeds pass through the digestive tract of the animal they germinate.
Animals ANGIOSPERMS USE DIFFERENT METHODS FOR SEED DISPERSAL Bananas Peaches Dates Avocados Jack fruit Mango Guava Cashews Figs Cherries Apples
Wind
Water
Two Major Classes of Angiosperms Monocots Dicots
Monocot v.s. Dicot Roots Stems
Importance of Angiosperms Uses of Angiosperms 1) All fruit and vegetable crops. 2) Cereal and grain crops 3) Grasses for livestock 4) Hardwood furniture 5) Bio-fuels – Ethanol from Corn etc.
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