Most importatnt Algae MCQ : Botany Knowledge

Algae MCQ

1. Study of algae is known as:

a. Mycology

b. Mycetology

c. Phycology

d. None of these

Ans. c. Phycology

2. Term 'Algae' was given by:

a. Lamarck

b. Fritsch

c. Linnaeus

d. A.P. de Candolle

Ans. c. Linnaeus

3. Algae are:

a. Chlorophyllous cryptogams

b. Non-chlorophyllous cryptogams

c. Chlorophyllous phanerogams

d. Non-chlorophyllous phanerogams

Ans. a. Chlorophyllous cryptogams

4. Sex organs in algae are generally:

a. Unicellular and jacketed

b. Unicellular and non-jacketed

c. Multicellular and jacketed

d. None of the above

Ans, b. Unicellular and non-jacketed

5. Which of the following is not a character of algae ?

a. Lack vascular tisssue

b. Little differentiation of true tissue

c. No embryo formation

d. None of the above

Ans, d. None of the above

6. Who is called 'Father of modern Algology in India' ?

a. R.N. Singh

b. Y. Bhardwaj

c. F.E. Fritsch

d. M.O.P. lyenger

Ans. d. M.O.P. lyenger

7. Terrestrial alga, 'Fritschiella' was discovered by:

a. Fritsch

b. lyenger

c. Y. Bhardwaj

d. Desikachary

Ans. b. lyenger

8. Role of blue-green algae in reclamation of saline usher land in India was shown by:

a. lyenger

b. Balakrishnan

c. R.N. Singh

d. Y. Bhardwaj

Ans. c. R.N. Singh

9. Which of the following is not an algologist ?

a. Desikachary

b. H.D. Kumar

c. Ghose

d. None of these

Ans, d. None of these

10. Which of the following is a parasitic alga ?

a. Zoochlorellae

b. Oedogonium

c. Cephaleuros

d. Protoderma

Ans. c. Cephaleuros

11. Which of the following is a cryophytic alga ?

a. Haematococcus nivalis

b. Scotiella

c. Chlamydomonas yellowstonensis

d. All of the above

Ans. d. All of the above

12. 'Red snow' is caused by :

a. Chlamydomonas nivalis

b. Haematococcus nivalis

c. Both a. and b.

d. None of these

Ans. c. Both a. and b.

13. 'Green snow' in Europe is caused by:

a. Chlamydomonas nivalis

b. Chlamydomonas yellowstonensis

c. Scotiella

d. None of the above

Ans. b. Chlamydomonas yellowstonensis

14. 'Black snow' is caused by:

a. Scytonema

b. Scotiella

c. Raphidonema 

d. Both b. and c.

Ans. d. Both b. and c.

15. Nostoc and Anabaena live symbiotically in:

a. Anthoceros thallus

b. Azolla (fern)

c. Coralloid root of Cycas

d. All of these

Ans. d. All of these

16. Blue-green algae which live endophytically in protozoans are called:

a. Cyanophages 

b. Cyanobacteria

c. Plasmids

d. Cyanallae

Ans. d. Cyanallae

17. Which is endozoic alga ?

a. Cladophora

b. Zoochlorellae

c. Protoderma 

d. None of these

Ans. b. Zoochlorellae

18. 'Red Sea' is red due to:

a. Chlamydomonas nivalis

b. Haemotococcus nivalis 

c. Trichodesmium erythraeum

d. Scotiella

Ans. c. Trichodesmium erythraeum

19. Which  alga is commonly known as 'Water net' ?

a. Chara

b. Ulothrix

c. Hydrodictyon

d. None of these

Ans. c. Hydrodictyon

20. Simplest non-motile unicellular coccoidal algae is :

a. Chlorella

b. Diatom

c. Chroococcus

d. None of these

Ans. c. Chroococcus

21. Unbranched floating filaments are found in :

a. Ulothrix

b. Oedogonium

c. Spirogyra

d. Chlamydomonas

Ans. c. Spirogyra

22. Thallus differentiated into prostrate and erect system is called:

a. Heterotrichous

b. Siphonous

c. Pseudoparenchymatous

d. Parenchymatous

Ans. a. Heterotrichous

23. 'Frog's spawn' alga is:

a. Macrocystis

b. Sargassum

c. Batrachospermum

d. None of these

Ans. c. Batrachospermum

24. Highest number of chromosomes (n=592) in algae is in:

a. Porphyra 

b. Ulothrix

c. Netrium

d. None of these

Ans. c. Netrium

25. None-flagellated, thin-walled spores in algae are called:

a. Zoospores

b. Hypnospores

c. Aplanospores

d. Zygospores.

Ans. c. Aplanospores

26. Most advanced group of algae is:

a. Cyanophyta

b. Rhodophyta

c. Phaeophyta

d. Chlorophyta

Ans. b. Rhodophyta

27. Most gigantic among algae is:

a. Microcystis

b. Macrocystis

c. Laminaria

d. Dictyota

Ans. b. Macrocystis

28. Cyanobacteria, is a new name has been given to:

a. Myxophyceae

b. Myxomycetes

c. Mycoplasma 

d. Schizomycetes

Ans. a. Myxophyceae

29. Hypnospores are for:

a. Nutrition

b. Defence

c. Reproduction

d. None of these

Ans. b. Defence

30. Gametes without a cell wall are called:

a. Calyptogametes

b. Coenogametes

c. Mitogametes

d. Gymnogametes

Ans. d. Gymnogametes

31. Autogamy is a characteristic feature of:

a. Chlamydomonas

b. Ulothrix

c. Spirogyra

d. Diatoms

Ans. d. Diatoms

 32. Which alga is the richest source of proteins ?

a. Porphyra

b. Ulva

c. Rhodymenia

d. Chlorella

Ans. d. Chlorella

33. Which of the following is chewed as tobacco in Scotland ?

a. Nostoc

b. Ulva

c. Rhodymenia

d. Porphyra

Ans. c. Rhodymenia

34. Which of the following is Agarophyte ?

a. Gelidium

b. Gracillaria

c. Gigartima

d. All of these

Ans. d. All of these

35. Irish moss yields an important substance :

a. Agar - 2

b. Alginate

c. Caragheen

d. None of these

Ans. c. Caragheen

36. Alginates (alginin), used as highly efficient gauze in internal operations are obtained from cell walls of :

a. Cyanophyceae

b. Phaeophyceae

c. Rhodophyceae

d. All of these

Ans. b. Phaeophyceae

37. 'Diatomite' is obtained from :

a. Myxophyceae

b. Bacillariophyceae

c. Phaeophyceae

d. Rhodophyceae

Ans. b. Bacillariophyceae

38. An important antibiotic of algal origin is :

a. Griseofulvin

b. Chlorellin

c. Streptomycin

d. All of these

Ans. b. Chlorellin

39. Which alga is used in control of 'Malaria' ?

a. Cladophora

b. Nitella

c. Chlorella

d. None of these.

Ans. b. Nitella

40. 'Sewage oxidation ponds' have luxuriant growth of :

a. Chlorella 

b. Chlamydomonas

c. Scenedesmus

d. All of these.

Ans. d. All of these.