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CHAPTERS 21 - 23 PLANT NOTES.

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Presentation on theme: "CHAPTERS 21 - 23 PLANT NOTES."— Presentation transcript:

1 CHAPTERS PLANT NOTES

2 Major characteristics
Multicellular Eukaryotes Cell walls of cellulose Autotrophs Contain chlorophyll Contain roots and leaves

3 Adaptations Vascular tissue – allows special transport of plant material

4 Adaptations Seeds – structures containing plant embryos

5 Do not have “true” leaves Contain root like rhizoids
bryophytes Mosses Do not have “true” leaves Contain root like rhizoids

6 Tracheophytes Seedless Vascular Plants
First ones were club mosses and ferns Vascular tissue As they evolved they developed the ability to be very large

7 “True” Land plants First plants with roots, leaves, and vascular tissues unlike bryophytes

8 Vascular Tissue Transports substances throughout the plant Xylem – Water Phloem – Food (sugars)

9 Ferns Usually live in moist environments Can live in dry areas
Can go dormant in harsh conditions Developed thick underground stems

10 gymnosperms Seeds are not part of fruit (naked seeds) Develops cones (conifers)

11 cones Reproductive structures Small ones produce pollen (male) Larger ones (female)

12 Seeds are dispersed by…
Wind Animals

13 Angiosperms (Anthophyta)
Flowering plants Plants whose seeds are part of fruits

14 fruits Contains seeds in angiosperms
How could this be a method of spreading seeds?

15 Pollen From the male organ of the plant
Pollination occurs by animals, winds, and self-pollination Ex. Bees and flowers

16 Parts of the Flower to Know
pistil stamen Stamen Pistil Petal Sepal petal sepal

17 stigma pistil style anther stamen filament ovary sepal ovary (ovule/egg) petal

18 Swells and breaks coating Food is broken down
Germination Seed gets water Swells and breaks coating Food is broken down Energy is used for growth

19 phototropism Plants ability to grow towards light

20 Gravitropism A plants response to gravity
Usually plants grow in the opposite direction of gravity

21 photoperiodism A plants flowering response based on the number of hours of exposure to darkness

22 Carnivorous Plants


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