Monday, April 29, 2019 ANGIOSPERMS Looking beyond flowers and fruits.

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Presentation transcript:

Monday, April 29, 2019 ANGIOSPERMS Looking beyond flowers and fruits

ANGIOSPERMS Angeion- vessel + spermae- seed most successful sexual reproduction: flowers most widespread protective wall: fruit Monday, April 29, 2019

ANGIOSPERMS Also called Division Anthophyta Some notable characteristics of the group: - the largest division of photosynthetic organisms -the dominant plants in most terrestrial ecosystems -most of our crop and ornamental plants Monday, April 29, 2019

ANGIOSPERMS 2 major groups: MONOCOTS DICOTS Only group of plants that exhibit DOUBLE FERTILIZATION

MONOCOTS VS DICOTS Monocots Dicots 1. One seed leaf (cotyledon) 2. Leaves have parallel veins 3. Vascular bundles in stems scattered Dicots 1. Two seed leaves (cotyledons 2. Leaves are net veined 3. Vascular bundles in stems arranged in a circle 4. Flower parts in fours or fives or multiples 5. Seed chambers in fruit in fours or fives or multiples 6. Tap root system 4. Flower parts in threes or multiples 5. Seed chambers in fruit in threes or multiples 6. Fibrous root system

REPRODUCTIVE STRUCTURE FLOWER Sepals- bud -photosynthetic -calyx Petals- pollination Stamen- pollen Carpel- ovary -ovule

LIFE CYCLE dormancy germination maturation Pollination DOUBLE FERTILIZATION FRUIT production

CHECK THIS OUT!!! http://www.emunix.emich.edu/~ghannan/systbot/doublefertanimation.html