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Intro Part 2- Structures: Unit 7

Name the 5 structures of a plant. 1) seeds 2) flowers 3) roots 4) stem 5) leaves
When do seeds develop? -they develop after the sperm and egg are fertilized
What are the 3 parts of a seed? 1) cotyledon 2) seed coat 3) young plant
Describe a cotyledon. -it is the seed leaf found inside the seed and it stores food
Explain monocot. -one cotyledon, the flower parts in threes, and it has leaves with parallel veins
Explain dicot. -two cotyledons, the flower parts in fours and fives, and it has leaves with branching veins
What is the purpose of the seed coat? -it surrounds and protects the seed
What is a young plant? -It is nourished by the stored food before photosynthesis
Explain the purpose of Flowers. - they assist in reproduction (pollination) - they are used directly for food
Explain the functions of Roots. - they supply a plant with water and dissolved minerals - they support and anchor the plant - they store surplus food during photosynthesis
Name the 7 structures of Roots. 1) epidermis 2) root hairs 3) root cap 4) xylem 5) phloem 6) taproot 7) fibrous roots
Describe the epidermis. -it is the outermost layer of the root
Describe and tell the function of root hairs. -they are hairs that extend out of the epidermis - they aid in water absorption
Describe the root cap. -it protects the tip of the roots
What does a root cap produce and why? - it produces a slimy substance to make it easier for root growth through the soil
Describe the xylem and what it supplies. - it is vascular tissue that is in the middle of the root - it supplies the plant with water
Describe the phloem and what it supplies. - it is the vascular tissue around the xylem - it supplies the plant with sugar
Describe the taproot. - it is the type of root that consists of one main root that grows downward.
Give 2 examples of taproots. - carrot - dandelion
Describe fibrous roots. - the type of root that has many roots the same size that spread out from the base of the stem.
Explain the functions of the stem. - it supports the plant body - it transports material around the plant - some store materials
Name and describe 2 types of structures of stems. 1) The herbaceous stem is soft, thin and flexible 2) the woody stem is rigid (trees and shrubs)
What are the functions of leaves? - to make food for the plant - for water storage
Name the 6 structures of leaves. HINT... Club Leaf 1) the cuticle 2) the epidermis 3) the palisade layer 4) the spongy layer 5) the stomata 6) the guard cells
Describe the cuticle. - the waxy layer that coats the surface of the stems and leaves
Describe the epidermis. - The thin, clear outermost layer of cells that covers roots, stems, leaves, and flower parts - contains the stomata
Describe the palisade layer. - it contains the chloroplasts
Describe the spongy layer. - it allows gasses to travel
Describe the stomata. - It allows carbon dioxide to enter the leaf.
Describe the guard cells. - they open and close the stomata.
Created by: carlsond