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Algae Basic Concepts

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Questions and Answers

Which of the following statements about algae is incorrect?

Anisogamous algae have gametes that differ in size and motility.
Isogamous algae have flagellated gametes of similar size.
Oogamous algae produce non-motile female gametes.
Hydrocolloids like agar and algin are water-repelling substances. (correct)

Which of the following algal classes is correctly matched with its representative genera?

Chlorophyceae: Spirogyra, Chara, Fucus
Chlorophyceae: Chlamydomonas, Volvox, Ulothrix (correct)
Phaeophyceae: Ectocarpus, Dictyota, Gelidium
Rhodophyceae: Polysiphonia, Porphyra, Sargassum

Which of the following bryophyte divisions is incorrectly matched with its representative genera?

Mosses: Sphagnum
Liverworts: Lycopodium (correct)
Liverworts: Marchantia
Mosses: Funaria, Polytrichum

In pteridophytes, which of the following statements is true?

Psilotum belongs to the division Psilopsida. (D) Signup and view all the answers

Which of the following statements about gymnosperms is correct?

The giant redwood tree Sequoia is a gymnosperm. (B) Signup and view all the answers

Which of the following algal products is incorrectly matched with its source?

Agar: Ulothrix (D) Signup and view all the answers

Which of the following bryophyte divisions is correctly matched with its representative genera?

Mosses: Funaria, Polytrichum, Sphagnum (B) Signup and view all the answers

In pteridophytes, which of the following statements is incorrect?

Dryopteris and Pteris belong to the division Sphenopsida. (B) Signup and view all the answers

Which of the following statements about gymnosperms is incorrect?

Mycorrhizal associations are found in Cycas. (C) Signup and view all the answers

Which of the following algal classes is incorrectly matched with its representative genera?

Phaeophyceae: Ulothrix, Spirogyra, Chara (A) Signup and view all the answers

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