Difference between revisions of "AY Honors/Marine Algae/Answer Key"
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< AY Honors | Marine AlgaeAY Honors/Marine Algae/Answer Key
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Seaweeds' appearance somewhat resembles non-arboreal terrestrial plants. | Seaweeds' appearance somewhat resembles non-arboreal terrestrial plants. | ||
| − | Thallus: the algal body | + | |
| − | lamina: a flattened structure that is somewhat leaf-like | + | *Thallus: the algal body |
| − | sorus: spore cluster | + | |
| − | on Fucus, air bladders: float-assist organ (on blade) | + | *lamina: a flattened structure that is somewhat leaf-like |
| − | on kelp, floats: float-assist organ (between lamina and stipe) | + | |
| − | stipe: a stem-like structure, may be absent | + | *sorus: spore cluster |
| − | holdfast: specialized basal structure providing attachment to a surface, often a rock or | + | |
| − | another alga. | + | *on Fucus, air bladders: float-assist organ (on blade) |
| + | |||
| + | *on kelp, floats: float-assist organ (between lamina and stipe) | ||
| + | |||
| + | *stipe: a stem-like structure, may be absent | ||
| + | |||
| + | *holdfast: specialized basal structure providing attachment to a surface, often a rock or | ||
| + | another alga. | ||
| + | |||
The stipe and blade are collectively known as fronds. | The stipe and blade are collectively known as fronds. | ||
Revision as of 22:37, 19 July 2007
1. What is marine algae?
Seaweeds are any of a large number of marine benthic algae. They are macroscopic, multicellular, and macrothallic, in contrast with most other algae. Seaweeds are often confused with other photosynthetic organisms. Seaweeds are popularly described as plants, but biologists typically do not consider them true Plantae. They should not be confused with plants such as seagrasses (which are vascular plants). In addition, a few species of cyanobacteria bear a resemblance to seaweed algae. Many phycologists prefer the term "marine algae" over "seaweeds".
Seaweeds' appearance somewhat resembles non-arboreal terrestrial plants.
- Thallus: the algal body
- lamina: a flattened structure that is somewhat leaf-like
- sorus: spore cluster
- on Fucus, air bladders: float-assist organ (on blade)
- on kelp, floats: float-assist organ (between lamina and stipe)
- stipe: a stem-like structure, may be absent
- holdfast: specialized basal structure providing attachment to a surface, often a rock or
another alga.
The stipe and blade are collectively known as fronds.
2. Where is it found?
Seaweed is often found on the seashore.
