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Plant Systems

Plant Systems. Root and Shoot Systems. Recall…. Organism. Prokaryote. Eukaryote. Multi-celled organism. Single-celled organism. Animal. Plant. Therefore. Plants are multi-cellular organisms Examples: mosses, ferns, conifers and flowering plants.

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Plant Systems

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  1. Plant Systems Root and Shoot Systems

  2. Recall… Organism Prokaryote Eukaryote Multi-celled organism Single-celled organism Animal Plant

  3. Therefore.... • Plants are multi-cellular organisms • Examples: mosses, ferns, conifers and flowering plants

  4. Distinguishing Features of a Plant • Typically green in colour • Why? • Chlorophyll – green pigmented molecules found in chloroplasts • Function: absorbs light and aids in photosynthesis by converting it into energy • Immobile • often anchored by the root system

  5. Plants and Food • Since plants cannot move like animals do to obtain food, they must make their own food through a process called Photosynthesis. glucose

  6. Similarities Between Plants and Animals • need to exchange gases with their surroundings • require an internal transportation system to move water and nutrients around • must be able to reproduce

  7. Root and Shoot System Since plants are immobile, they do not require complex organ systems. Instead, plant “organs” are referred to as plant parts. The two main body systems (parts) : The shoot system is made up of the stem, leaves, flowers, etc. The root system is made up of one or more separate roots

  8. Root System • the part of the plant that anchors the plant and often grows below ground • It absorbs water and minerals as well as stores nutrient. • Contain root hairs – which are tiny extensions of the tissue that help with absorption

  9. Where are the roots located? • Roots are not always located below ground or in soil... WHY??? Mangroves have root systems that grow out of the water and soil. The Banyan tree has aerial roots that grow downward

  10. Shoot System • The system in a flowering plant that is specialized to conduct photosynthesis and reproduce sexually • It consists of: • Leaf • Flower • Stem • (fruit)

  11. The Shoot System – The Leaf • Main photosynthetic structure • Contains chloroplasts • Leaves are structured to maximize light intake and CO2intake and to minimize water loss • There are tiny openings on leaves called stomata that allow materials to pass in and out • Stomata are controlled by guard cells • Other functions: • support, protection, reproduction and attraction

  12. The Shoot System – The Flower • Specialized structures for sexual reproduction • The male reproductive structures produce pollen grains • the female structures produce eggs • After fertilization, the female parts form seeds, which are often protected by fruits. What are ways of pollination? • PLEASE NOTE • Mosses, ferns and conifers DO NOT FLOWER – they reproduce by different methods

  13. The Shoot System – The Stem • Functions: • Supports branches, leaves and flowers • Provides a way to transport materials

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