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Characteristics
- how big?
- group categorization?
- age
- a. Largest group of plants
- i. 300 families; 12,000 genera; 300,000 species
- 1. Such a large number
- b. Wildly successful group of plants and most widely distributed
- i. Almost Every ecosystem has flowering plants as the dominant plant
- c. Youngest plant phylum
- i. Hasn’t taken very long for this phylum to diversify from one end up to the equator down to the poles
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Structure
- has a lot of ___
__ structure:
Some are __
i. Woody trees, woody shrubs, non-woody herbaceous plants (usually,they are annuals)
1. if theyare woodywith flowers, they are angiosperms
2. No monocots are woody
3. Dicots are woody
vines`
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What can they vary in?
whether woody (dicots) or herbaceous (monocots)
location (aquatic or terrestrial); epiphytes
nutritive purposes (photosynthetic or parasitic)
size
longevity (annuals, biennials, perennials)
leaf arrangement
Stems
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a. Some are __
i. Can __
ii. Can be __
b. Some are __
i. Can use something for __, such as other plants or objects
c. Some are __
i. Has to __
1. Has a lot of __
aquatic
float on the surface
completely submerged
epiphytes
support
parasitic
have a host plant
variablility
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Can vary in size
- i. Largest: eucalyptus
- Smallest: duckweed
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Vary in longevity
- annuals
- biennials (flwoer in teh second year; then, the plant dies)
- perennials
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Leaf arrangement
There are numerous leaf arrangements
1) alternate; the leaves are single at each node and alternate around the stem in an ascending spiral
2) can be on opposite sides of the leaves; opposite arrangement;paired
3) whorled: occurs when there are three or more equally spaced leaves at a node
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Stems
- i. Can be erect upright, horizontal,
- ii. Some are underground
- 1. Such as tubers
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Explain tubers
- a. Stem is very short in the tuber
- b. Underground structure has stem (which are roots); some have both underground and upright aerial stems
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True roots
1) what do monocots have?
2) What do dicots have?
- Fibrous root system: roots are thesame size
- taproot system: onemain root is bigger than the others with other lateral roots coming off of it
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