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Algae: Characteristics and Economic Applications

Covers algae classification, morphology, reproduction methods, and their economic importance including food supplements, pharmaceutical applications, industrial products (agar, alginates), and environmental uses like sewage treatment.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a pair of larvicidal algae?

  1. Chara and Aulosira
  2. Chara and Chlorella
  3. Aulosira and Chlorella
  4. Pelvetia and Chlorella
  5. Pelvetia and Chara
Question 2 Multiple Choice (Single Answer)

Which of the following is a filamentous blue-green algae, used as a human dietary supplement?

  1. Spirogyra
  2. Cladophora
  3. Hydrodictyon
  4. Spirulina
  5. Gracilaria
Question 3 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

  1. Red colour of members of rhodophyceae is due to presence of phycocyanin.
  2. In red algae, food is stored in the form of Floridian starch.
  3. In pheophyceae, flagella are inserted laterally.
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
Question 4 Multiple Choice (Single Answer)

Which of the following are used in long distance space travels?

  1. Chlorella
  2. Spirulina
  3. Synechococcus
  4. Chlamydomonas
  1. 1 and 2
  2. 1 and 3
  3. 1 and 4
  4. 2 and 3
  5. 3 and 4
Question 5 Multiple Choice (Single Answer)

Which of the following are brown algae?

  1. Gelidium and Fucus
  2. Batrachospermum and Gelidium
  3. Vaucheria and Nostoc
  4. Laminaria and Fucus
  5. Nostoc and Laminaria
Question 6 Multiple Choice (Single Answer)

Which of the following algae reproduces through anisogamous mode?

  1. Ulothrix
  2. Cladophora
  3. Oedogonium
  4. Pandorina
  5. Fucus
Question 7 Multiple Choice (Single Answer)

Which of the following algae is used as surgical tool in the opening of wounds?

  1. Ulva
  2. Laminaria
  3. Spirogyra
  4. Digenia
  5. Sargassum
Question 8 Multiple Choice (Single Answer)

Which of the following algae is used in genetic research?

  1. Acetabularia
  2. Anacystis
  3. Synechococcus
  4. Chlorella
  5. Spirulina
Question 9 Multiple Choice (Single Answer)

Which of the following algae are used as source(s) of alginates?

  1. Gelidium
  2. Macrocystis
  3. Gloeopeltis
  4. Laminaria
  5. Ascophyllum
  1. 1, 2 and 3
  2. 1, 3 and 5
  3. 2, 3 and 4
  4. 2, 4 and 5
  5. 3, 4 and 5
Question 10 Multiple Choice (Single Answer)

Which of the following algae find application in sewage treatment?

  1. Acetabullaria
  2. Scenedesmus
  3. Chlorella
  4. Macrocystis
  1. 1 and 2
  2. 1 and 4
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 11 Multiple Choice (Single Answer)

Which of the following is a pair of algae with multicellular filamentous thallus organisation?

  1. Chlamydomonas and Chlorella
  2. Volvox and Gonium
  3. Ulothrix and Spyrogyra
  4. Gonium and Chlorella
  5. Chlamydomonas and Spirogyra
Question 12 Multiple Choice (Single Answer)

Which of the following algae are used as sources of Br?

  1. Rhodomela
  2. Polysiphonia
  3. Vovox
  4. Ulothrix
  1. 1 and 2
  2. 1 and 3
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 13 Multiple Choice (Single Answer)

Which of the following algae are rich sources of iodine?

  1. Laminaria
  2. Fucus
  3. Polysiphonia
  4. Chara
  1. 1 and 2
  2. 1 and 3
  3. 1 and 4
  4. 2 and 3
  5. 3 and 4
Question 14 Multiple Choice (Single Answer)

Match the columns:

 
Column – I Column – II
A. Agar agar 1. Gloiopeltis
B. Algin 2. Gelidium
C. Funori 3. Laminaria
  1. A - 1, B - 2, C - 3
  2. A - 1, B - 3, C - 2
  3. A - 2, B - 1, C - 3
  4. A - 2, B - 3, C - 1
  5. A - 3, B - 1, C - 2
Question 15 Multiple Choice (Single Answer)

Match the columns:

 
Column – I Column – II
P. Epiphytic algae 1. Occillatoria
Q. Endophytic algae 2. Anabaena
R. Epizoic algae 3. Oedogonium
S. Endozoic algae 4. Zoochlorella
  1. P - 1, Q - 2, R - 3, S - 4
  2. P - 2, Q - 1, R - 4, S - 3
  3. P - 3, Q - 2, R - 1, S - 4
  4. P - 4, Q - 3, R - 2, S - 1
  5. P - 1, Q - 2, R - 4, S - 3
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