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PLANT STRUCTURE AND FUNCTION

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Presentation on theme: "PLANT STRUCTURE AND FUNCTION"— Presentation transcript:

1 PLANT STRUCTURE AND FUNCTION

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3 Major Parts of a Plant Leaves Seeds Flower Stem Root
Where photosynthesis occurs Seeds Method of sexual reproduction Flower Site where reproduction occurs Stem Transports nutrients and supports the plant Root take in nutrients and anchor plant

4 Male Parts of the Flower
Stamen- Makes up all male parts Pollen- Male sex cell, similar to sperm Anther- Sac-like structure on top of the filament Filament- Short stalk that holds the anther

5 Female Parts of the Flower
Pistil- Makes up all female parts Ovules- Female sex cell, similar to the egg Stigma- Sticky part of the system, catches pollen Style-Tube that leads from the stigma to the ovary Ovary- Place where ovule is fertilized by the pollen, Turns into a fruit or seed coat

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7 PROBLEM! IF THE CUTICLE BLOCKS WATER, WHAT ELSE IS PREVENTED FROM ENTERING/EXITING THE PLANT? C O 2 !!

8 Solution? STOMATA! Tiny pores in epidermis surrounded by two guard cells! Open during the day! Why? PS occurs during the day Transpiration necessary for cooling

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10 Stems Transports food, water, and nutrients
Supports the leaves and flowers

11 Plant Processes Photosynthesis Mixes light, water, and carbon dioxide in the presence of chlorophyll to produce sugar and oxygen Respiration Combines sugars and oxygen to give off water and heat Transpiration Loss of water through the leaves or stems Causes wilting when soil is dry

12 Animal Water Wind                                                     Dispersal of Seeds Gravity Wind Force


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