74 lines
1.8 KiB
Markdown
74 lines
1.8 KiB
Markdown
[[G11 Pre-AP Biology]]
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Algae Divisions:
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* Chlorophyta:
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* Closest relative to plantae.
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* Green pigment.
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* Chlorophyll A and B (plants have this too).
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* Unicellular or multicellular.
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* Phaeophyta:
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* Kelp.
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* Multicellular.
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* Can be large.
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* Pyrrophyta:
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* Chyrsophyta:
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* Rhodophyta:
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* Red pigment.
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* Able to live in deep waters.
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* Absorbs longer wavelength.
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* Euglenophyta:
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Plants and algae comparison:
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* Autotrophs (chloroplasts).
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* Cell walls composed of cellulose.
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* Stores energy as starch.
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Contrast:
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* Algae have no true leaves or roots (may have holdfasts/flattened blades, air bladders hold them up).
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* Plants are mainly terrestrial, algae are aquatic (bad answer when contrasting).
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![[Pasted image 20260929112116.png]]
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Plants have adapted to live on land:
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* Cuticle to prevent drying out.
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* Vascular tissue to transport water.
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* Enclosed embryo (seeds) to prevent drying out.
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![[Pasted image 20260929112553.png]]
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Plant classification:
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* Non Vascular:
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* No xylem/phloem.
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* Grows low.
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* Darker environment.
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* Absorbs $H_2O$ through leaves.
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* Moss.
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* Liverworts.
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* Hornworts.
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* Vascular:
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* Roots help it grow taller.
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* Seeds:
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* Sexual reproduction, no water.
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* Angiosperms:
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* Flowers.
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* Monocot:
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* One cotyledon.
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* Veins in parallel.
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* Vascular tissue arranged in circle.
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* Scattered vascular tissue.
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* Petals multiple of 3.
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* Fibrous.
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* Examples include corn, grass, green onions.
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* Dicot:
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* Two cotyledons.
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* Veins are branched.
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* Xylem arranged in star shape.
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* Vascular tissue arranged in ring.
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* Petals in multiples of 4 or 5.
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* Taproot.
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* Examples include carrots and dandelions.
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* Gymnosperms:
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* Naked seeds.
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* No ovary to protect seeds.
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* No Seeds:
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* Requires moist environment.
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* Ferns:
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* Releases spores.
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* Requires sperm. |