LIFE IN THE OCEANS

ALGAE/PLANT LAB ANSWER SHEET. FILL OUT AND SUBMIT TO BLACKBOARD

PART 1: WATCH THE VIDEOS TO ANSWER THE FOLLOWING QUESTIONS

Brown Algae Video
What are some characteristics of intertidal brown algae?

What are characteristics of brown algae that are found further offshore?

Green Algae Video
What does Codium look like?

Why is the Ulva from the intertidal so much smaller than the Ulva from Mission Bay?

Red Algae Video
Why do the fleshy red algae have such small blades?

Why is some of the calcareous upright algae white in some areas and red in others?

 
PART 2: ALGAE IDENTIFICATION

1. Fleshy Red Algae (CHOOSE ONE)
   Image #:
   Based on field guide, what type of algae is this?

General description (you can also insert a drawing if you wish)

Where is it found (sub or intertidal?)

How is it adapted to its environment?

2. Calcareous Red Algae (CHOOSE ONE)
   Image #:
   Based on field guide, what type of algae is this?

General description (you can also insert a drawing if you wish)

Where is it found (sub or intertidal?)

How is it adapted to its environment?

3. Brown algae #1 (CHOOSE ONE)
   Image #:
   Based on field guide, what type of algae is this?

General description (you can also insert a drawing if you wish)

Where is it found (sub or intertidal?)

How is it adapted to its environment?

4. Brown algae #2 (CHOOSE ONE)
   Image #:
   Based on field guide, what type of algae is this?

General description (you can also insert a drawing if you wish)

Where is it found (sub or intertidal?)

How is it adapted to its environment?

Green algae (Ulva)
Image #:
Based on field guide, what type of algae is this?
Ulva lactuca
General description (you can also insert a drawing if you wish)

Where is it found (sub or intertidal?)

How is it adapted to its environment?

Questions

1. How are the blades of seaweeds different from the leaves of angiosperms?
2. How is the stipe of a seaweed different from the stem of an angiosperm?
3. How is the holdfast of a seaweed different from the roots of an angiosperm? What is the best substrate for a holdfast?
4. What is the name of the structures that hold the blades of seaweeds close to the sea surface?
5. Coralline algae belong to which Phylum, and what substance is deposited within their cell walls?

PART 3: SEAGRASSES AND SALT TOLERANT PLANTS
Watch the Seagrass Video

6. Where do you find surf grass (Phyllospadix)? What adaptations does it have to live in this environment?
7. Where do you find eel grass. What adaptations does it have to live in this environment?
8. Name two important benefits of sea grass beds on their ecosystem (you learned this in lecture)

Watch the Salt Marsh Plant video

9. Spartina (What strategy does it have to live in a high salt environment?)
10. Where does Spartina live in the marsh?
11. Salicornia (What strategy does it have to live in a high salt environment?
12. How can humans use Salicornia? 
    PART 3: SEAWEED IN YOUR HOUSE
    Take a look through your toiletries and food pantry (or go to the store). Find five products that list algae as an ingredient. Take a picture of each product and their ingredient list. What is the algae used for in each case?
13. Include two pictures (product & ingredients). Why was algae used as an ingredient for this product?
14. Include two pictures (product & ingredients). Why was algae used as an ingredient for this product?
15. Include two pictures (product & ingredients). Why was algae used as an ingredient for this product?
16. Include two pictures (product & ingredients). Why was algae used as an ingredient for this product?
17. Include two pictures (product & ingredients). Why was algae used as an ingredient for this product?

Sample Solution