NAME___________________________________
DATE____________
PER___________
Q&A Ch5_Part 2: Seaweeds and Plants
1. What is a primary producer?
2. While Chapter 5 dealt with unicellular primary producers, Chapter 5 deals with ____________________ ones.
3. Name three ways seaweeds are important.
4. Another name for seaweed is __________________.
5. How are seaweeds different than microalgae? Similar?
6. Algae are classified based on their structure and types of ________________ and __________________ they
store.
7. Seaweeds lack true ________________, ________________, and _______________.
8. Draw the thallus of Macrocystis sp. and label all of its structural features.
9. Most green algae species inhabit __________________.
10. ____________ algae are thought to have given rise to land plants.
11. The genera for sea lettuce, Dead man’s fingers, and calcareous green algae are________________,
________________, and __________________, respectively.
12. The dominant pigment in brown algae is called _________________.
13. Unlike green algae, most brown algae are _______________. They are also more structurally
_______________ and larger.
14. Laminaria, Egregia, Nereocystis, and Macrocystis are all local genera of ________________.
15. _________________ algae are the most specious of the seaweeds, and their color is based on their dominant
pigment type, ___________________.
16. Coralline red algae, such as Corallina are similar to the green algae in the genus Halimeda, as both genera
possess ______________________ in their cell walls.
17. What is the difference between a sporophyte and a gametophyte?
18. In your own words, explain the phenomenon of alteration of generations?
NAME___________________________________
DATE____________
PER___________
Q&A Ch6_Part 2: Seaweeds and Plants
19. What is mariculture?
20. Gelatinous chemicals derived from macroalgae are called ___________________.
21. In which human products will you find algin? What role does it play in these products?
22. From which genus of macroalgae is algin heavily obtained from?
23. Carrageenan is obtained from ____________ algae and is used mainly as an ________________.
24. In which human products do you find agar?
25. What are angiosperms, and what division (phylum) and kingdom do they belong to?
26. What is the only true group of marine flowering plants? What is meant by “true group”?
27. Which plant groups cannot tolerate full immersion in seawater?
28. Seagrasses evolved from ___________ __________ and have horizontal stems called ______________.
29. The _______________ and ________________ of seagrasses are both dispersed by water currents.
30. The leaves of the genus Zostera (eelgrass) are flat and _________________, whereas those of Phyllospadix
(surf grass) are more cylindrical.
31. Cordgrasses are kinds of _______________________ plants that live in the _______________ regions and
excrete excess salt through __________ __________ located in the leaves.
32. Cordgrasses, succulents (e.g., pickle weed and iceplant), and other salt-marsh plants tolerate some exposure to
seawater, and are thus termed ________________.
33. Where do mangroves, or mangals, live?
34. What is the scientific name (genus and species) of the red mangrove? (Fig. 614)
35. Name two adaptations red mangroves possess to help cope with high salinity?
36. How do pneumatophores help mangroves survive in oxygen-poor mud? (pg 262)
37. How would you serve Ulva to a human? What about Porphyra? (pg 109)