1. PARTS OF A SEED PLANT
Leaf
Stems
Roots
Seeds

2. Structure of a Leaf

3. Leaves Captures the sun’s energy the food factory of the plant
produce the food used by the plant or stored for later use

4. Part of the Leaf (pg. 2)
Cuticle; waxy waterproof coating; helps plant retain water
Surface cells: protective layer
Upper Leaf Cells; Tightly packed cells. High concentration of chloroplast
Lower Leaf Cells; Widely spaced to allow carbon dioxide (CO2) to reach cells for photosynthesis and oxygen (O2) to escape.
Vein: vascular tissue containing the Xylem & Phloem
Xylem: carries water from roots to leaves
Phloem: transport food made during photosynthesis.

5. Chloroplasts Organelles which contain chlorophyll
located inside the food making cells

6. Stomates
allow the plant to breathe and transpire
give off moisture

7. Guard Cells
open and close the small pore on the underside of the leaf

8. food
manufactured in the leaves moves downward through the stem to the roots
used by the plant
stored in stem or root and leaf in the form of sugar, starch or protein.

9. Respiration plants respire 24 hours a day consume O2 and give off CO2
plants produce more O2 through ps. Than they consume during respiration and growth.

11. Photosynthesis & Respiration

12. Stems two main functions
movement of water & minerals from the roots & movement of manufactured food down for storage.
support of leaves and reproductive structures

13. Stems also
used for food storage and reproduction of plants involving cuttings
Green stems manufacture food just as leaves do

14. Internal Stem Structure
Cambium- separates Phloem and Xylem and produces all new cells.

15. Internal Stem Structure
Two types
Herbaceous
Woody

16. Herbaceous Stem Woody Stem No wood and are often soft
Durable; made up of many layers

17. Roots Two Types Usually underground functions:
anchor plant and hold upright
absorb water and minerals from soil and conduct to stem
Sometimes store food
Two Types
Fibrous…like rye grass
Taproot…like carrots!

18. Root Structure internal similar to stems
older roots have xylem, phloem and cambium

19. external root cap produces continuous supply of new cells
protects roots as they push through soil

20. Structure
root hairs
absorb moisture and minerals
small roots

21. Seeds All seeds share important similarities
Inside the seed is a plant ready to grow

22. Seed Structure Three main parts
Embryo: The young plant that develops from the zygote or fertizilzed egg
Already contains the beginnings of roots, stems and leaves
Uses the food stored in the seed to grow
Some seeds are surrounded by a structure called fruit! Yum!!!!!

23. SEED STRUCTURE
Cotyledons: “Seed Leaf” The stored food sometimes in the seed
Seed Coat: Outer covering of the seed.
Acts as the “skin” protecting the embryo and its food from drying out.
Allows seed to remain inactive for a long time

24. Seed Structures

25. Seed Dissection of the Lima Bean
Seed Dissection Page 11 of Packet
Looking inside a seed
Each team of two will get 2 SEEDS
Dry seed vs Soaked seed
Draw and observe the dry seed
In the mouth or cup of warm water

26. Seed Dispersal (pg. 139) Dispersed by organisms;
an animal eats a fruit and their droppings spread the seeds
Seeds enclosed on barblike structures that hook on fur
Dispersed by water
Dispersed by wind