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CHAPTER 32
The tallest tree is the Redwood (Sequoia sempervirens) approx 110 m
The tallest Angiosperm is the Australian Eucalyptus regnans
Water Uptake and transport (Fig. 32.1)
= water is essential because: transport solute, cool the body, photosynthesis and Turgor pressure
Osmosis- movement of H2) through a semi-impermeable membrane
Osmotic potential ( o)-depend on dissolve solute: Hi concentration means more negative o.
Isoosmotic-two solution with same o; Hypoosmotic- solution that has a less negative o(more +)
Turgor Pressure -hydraulic …
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…bottom, 2 middle); megagametophyte
= cell wall formation lead to 7-celled gametophyte with 8 nuclei
= 3 cell at micropyle-1 egg/2 synergid cells; 3 at top-called antipodal; 2 center-produce endosperm.
The anther's (microsporangia) microsporocyte produce microspores by meiosis-divide once then release.
POLLINATION- transfer of pollen from anther to stigma.
= In gymnosperm/angiosperm the sperm travels in pollen grains.
2 types; self-pollination (legumes, peas) and cross- pollination (wind, insect, animals and water).
In wind pollinated flowers the stigma is sticky or featherlike.
Word Count: 4332
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