1. Introduction to Plants
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Packet #15
Chapters #20 & 21

2. Introduction I
Plants help provide the foundation for all living organisms on planet earth.
Plants are responsible for capturing energy from the sun, and, ultimately that energy is passed along to animals—allowing them to survive.
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3. Specialized Plant Cells
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4. Specialized Plant Cells
Parenchyma cells
Aids with storage and movement of materials in plants
Sclerenchyma cells
Dead cells that usually provide strength and support.
Collenchyma cells
Capable of stretching and provide mechanical support
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5. Plant Tissue
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6. Plant Tissue Three Types of Tissue Dermal Tissue Vascular Tissue
Plant’s protective covering in contact with the environment
Facilitates water and ion uptake in roots
Regulates gas exchange in leaves and stems
Vascular Tissue
Xylem & phloem
Conducts water and solutes between organs
Provides structural support
Ground Tissue
Packing and supportive tissue
Food manufacturing and storage
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7. Plant Organs
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8. Introduction There are four major organs of a plant
Flower* (Not all plants)
Stem
Root
Leaf

9. Flower The flower contains the organs of plant sexual reproduction
It attracts insects needed to carry the pollen between plants to allow pollination
It's important for reproduction of flowering plants.

10. Stem
The stem is the organ which holds the leaves upright in the air and facing the light
It carries water and minerals to the leaves, and food around the plant
The stem is important for nutrition, excretion and growth

11. Roots
The root is the organ which provides anchorage for the plant so that it does not blow away or fall over
With root hairs, the root provides a big surface area to help take in water and minerals from the soil – both of which are essential for photosynthesis
The root is therefore important for nutrition

12. Leaf Site of photosynthesis
Responsible for capturing light energy and transforming it into chemical energy.
More details on the structure of the leaf in Packet #16.
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13. Organ Systems of Plants
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14. Organ Systems I There are two major organ systems in plants
Shoot system
Stems
Leaves
Root system
Roots
Trichomes
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15. Types of Plants {Organisms}
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16. Type of Plants {Organisms} I
Seedless Non-Vascular Plants
Bryophytes
Mosses
Hornworts
Liverworts
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17. Type of Plants {Organisms} II
Seedless Vascular Plants
Ferns
Whisk ferns
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18. Type of Plants {Organisms} III
Gymnosperms
Pine Cones
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19. Type of Plants {Organisms} IV
Angiosperms
Flowering Plants
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20. Review
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