1. DESCRIBE SEAWEED How does seaweed benefit life in the ocean? Humans?
READ ARTICLE

2. SEAWEED CHARACTERISTICS
Multicellular algae/ macroscopic algae
Photosynthetic
Producer
Autotrophic
SEAWEEDS are CLASSIFIED by color
Red green brown

3. INSTRUCTIONAL OBJECTIVES SEAWEEDS
1. Classify the main kinds of multicellular algae(seaweeds)
2. Distinguish between the different types of multicellular algae.
3. Describe characteristics and habitats of the multicellular
algae.

4. SEAWEED BENEFITS TO HUMANS
Food source
Oxygen
Habitat and nutrient source for ocean life
Toothpaste
Photography film
Skin care
vitamins

5. SEAWEED BENEFITS

6. SEAWEED
Seaweeds are a type of MULTICELLULAR ALGAE that are photosynthetic, multicellular and have sexual and asexual reproduction. Their reproduction stage has two parts the gametophyte stage is sexual and the sporophyte stage is asexual. They are classified in kingdom Protista. They are CLASSIFIED according to their color red, green or brown.
Guess the AIM???

7. AIM: How can we classify multicellular algae(seaweeds)? Label Diagram

8. SEAWEED STRUCTURE AND FUNCTION
SEAWEED FUNCTION
BLADE
STIPE
AIR BLADDER
THALLUS/FROND
HOLDFAST

9. SEAWEED STRUCTURE and FUNCTION
1. blade-leaf
2. stipe-stem
3. air bladder
4. holdfast-roots
5. thallus-leafy part of plant
1. Photosynthesis
2. Transport of nutrients/flexibility
3. Buoyancy
4. attach to substrate(rocks)
5. leafy part of seaweed
SEAWEED STRUCTURE and FUNCTION

10. SEAWEED FUNCTION Photosynthesis
Flexibility: supports structure and transports nutrients
Buoyancy
Hold to substrate so it is not washed away
Leafy part of structure

11. How does seaweed get nutrition?

12. SEAWEED NUTRITION
Seaweed gets energy from photosynthesis and gets other nutrients and minerals from absorbing them from the ocean
Carbon dioxide + Light + water  oxygen + glucose

13. SEAWEED REPRODUCTION alternation of generations

14. Ulva Alternation of Generations

15. SEAWEED ACTIVITY Research seaweed types using references
Look up the type of algae(red, green or brown)
Look up phylum using classification tree
Look up common name if there is one
List unique characteristics
list habitat/zone

16. Genus/common name
Kingdom/phylum
Type or color
characteristics
habitat
Ulva/sea lettuce
Acetabularia
Codium
Enteromorpha
Fucus/rockweed
Laminaria/kelp
Sargassum
Corallina
Chondrus crispus/irish moss
Porphyra

17. SEAWEED SUMMARY
The multicellular algae/seaweed are classified in three different phyla based on the color of their pigments. Seaweeds are adapted to live in a variety of marine habitats, from the intertidal and subtidal zones to the open ocean. They are photosynthetic organisms and provide, oxygen, a food source and habitat for other ocean organisms.

18. SEAWEED or MULTICELLULAR ALGAE EXIT QUIZ
1. True or False. Correct for full credit.
Ulva or sea lettuce is classified in phylum Rhodophyta.
2. Which seaweed is not green algae?
A. Chondrus crispus B. Acetabularia C. Ulva D. Codium
3. I am a brown, multicellular algae. I live in the intertidal zone and my common name is Rockweed. Who am I?
A. Irish moss B. Sea lettuce C. Enteromorpha D. Fucus
4. Describe 2 differences between Acetabularia and Corallina
in a Ven diagram or double tt chart.