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Algae and Their Economic Importance

Algae Economic Importance of Algae

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Questions

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

Which of the following is a pair of brown algae?

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

Which of the following statements is/are FALSE?

  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. Only 1 and 2
  5. Only 2 and 3
Question 5 Multiple Choice (Single Answer)

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

  1. Chlorella
  2. Spirulina
  3. Synechococcus
  4. Chlamydomonas
  1. Only 1 and 2
  2. Only 1 and 3
  3. Only 1 and 4
  4. Only 2 and 3
  5. Only 3 and 4
Question 6 Multiple Choice (Single Answer)

Which of the following algae is used in genetic researches?

  1. Acetabularia
  2. Anacystis
  3. Synechococcus
  4. Chlorella
  5. Spirulina
Question 7 Multiple Choice (Single Answer)

Match column – I with column – II.

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
Question 8 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 9 Multiple Choice (Single Answer)

Which of the following algae are used as source of alginates?

  1. Gelidium
  2. Macrocystis
  3. Gloeopeltis
  4. Laminaria
  5. Ascophyllum
  1. Only 1, 2 and 3
  2. Only 1, 3 and 5
  3. Only 2, 3 and 4
  4. Only 2, 4 and 5
  5. Only 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. Only 1 and 2
  2. Only 1 and 4
  3. Only 2 and 3
  4. Only 2 and 4
  5. Only 3 and 4
Question 11 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 12 Multiple Choice (Single Answer)

Which of the following algae are rich sources of iodine?

  1. Laminaria
  2. Fucus
  3. Polysiphonia
  4. Chara
  1. Only 1 and 2
  2. Only 1 and 3
  3. Only 1 and 4
  4. Only 2 and 3
  5. Only 3 and 4
Question 13 Multiple Choice (Single Answer)

Which of the following algae reproduce through anisogamous mode?

  1. Ulothrix
  2. Cladophora
  3. Oedogonium
  4. Pandoria
  5. Fucus
Question 14 Multiple Choice (Single Answer)

Which of the following algae are used as source of bromine?

  1. Rhodomela
  2. Polysiphonia
  3. Vovox
  4. Ulothrix
  1. Only 1 and 2
  2. Only 1 and 3
  3. Only 2 and 3
  4. Only 2 and 4
  5. Only 3 and 4
Question 15 Multiple Choice (Single Answer)

Match the Column – I (industrial product) with Column – II (obtained from) and select the correct option.
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
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