ALGAE

TRUE AND FALSE

1. Gametes of Ulothrix are quadriflagellate:

Ans. False

2. Chlorella occurs as an endozoic alga inside Euglena:

Ans. False

3. Fusion of two vegetative cells of Chlamydomonas is called hologamy:

Ans. True

4. Vohox is a colonial, fresh water algae:

Ans. True

5. Cladophora species occurs in fresh water as well as in sea water:

Ans. True

6. The algae Chlorella and Scendesmus are the rich source of N. P. K.:

Ans. False

7. The plants of Cladophora crispate are epizoic:

Ans. True

8. Carrageenin is used for checking bleeding:

Ans. True

9. The androphore and antherozoids in Oedogonium are multiflagellate:

Ans. True

10. Anabaena can be used in space for providing oxygen:

Ans. False

11. The macrandrous species of Oedogonium may be monoecious or dioecions:

Ans. True

12. The zoospores in Oedogonium are multiflagellate:

Ans. True

13. Chlorophyll C occurs in the mebers of Xanthophyceae:

Ans. True

14. The cells of Oedogonium are multi nucleate with a reticulate chloroplast:

Ans. False

15. Chlorella yields a food called carrageerin:

Ans. False

16. The diatoms have chlorophyll C:

Ans. True

17. Some red algae show depositions of calcium carbonate in their cell wall:

Ans. True

18. The heterocysts of blue–green algae show eukaryotic cell organization:

Ans. False

19. The cells of Chlorella have riboflavin and folic acid:

Ans. True

20. Dinoflagellates lack association of basic proteins with DNA in their nucleus:

Ans. True

21. An alga Cephaleuros grow as parasitic on coffee leaves:

Ans. True

22. Zoochlorella occurs as endozoic alga inside the Hydra:

Ans. True

FILL IN THE BLANKS

1. In Ulothrix gametes are ………..:

Ans. Biflagellate

2. The similarty between blue–green algae and bacteria in their nuclear organization is similar …………..:

Ans. Nucleoid or genophore (incipient nucleus)

3. Spirogora reproduces by gametes which are ……………..:

Ans. Aplanogametes (Non–Motile isogametes)

4. Ground becomes slippery in rainy season due to ……………….:

Ans. Blue–Green Algae

5. Carageenium is obtained from …………….:

Ans. Chondrus crispes (Red Algae)

6. Agar–agar is obtained from the members of …………..:

Ans. Red Algae

7. Iodine is obtained from ………….:

Ans. Laminaria

8. Pioneer to point out the significance of blue–green algae in relation to nitrogen fixation is ………………:

Ans. P. K. D. e.

9. Fucoxanthin pigment is found in ………..:

Ans. Brown Algae

10. In algae embryo is ……………. Present:

Ans. Not

11. The members of ……… can fix up atmospheric nitrogen:

Ans. Myxophyceae

12. Heterocyst are found in ……….:

Ans. Blue–Green Algae

13. Shape of chloroplast in Spirogyyra is …………….:

Ans. Spiral

14. Capacity of blue–green algae to change colour with light is called ……………..:

Ans. Gaidukov phenomenon

15. Food is stored in the form of mannitol in …………:

Ans. Pheophyceae

16.  …………. is a protein body with starch envelop:

Ans. Pyrenoid

17. Amylum stars are found in …………:

Ans. Chara

18. …………. is known as umbrella plant:

Ans. Acetabularia

19. Alfred nobel used …….. for absorbing nitroglycerine:

Ans. Diatomaceous

20. The thylakoids of ……………… are called photosynthetic respiratory membranes:

Ans. Cyanobacteria

21. The filaments of Spirogyra are slippery because of due to the presence of …………:

Ans. Mucilage

22. ……… are known as jewels of the plant kingdom:

Ans. Diatoms

23. The cell walls of  ………… are silicified:

Ans. Diatoms

24. In most of the green algae, reserve food material is in the form of ……….:

Ans. Starch

25. Carragenin is obtained from ……………:

Ans. Chondrus

26. The nucleus is suspended in the centre of cell of Spirogyra with the help of ……….:

Ans. Cytoplasmic strans

27. …………. of Chlamydomonas is photosensitive:

Ans. Eyespot

28. Chlorella is a rich source of ……………:

Ans. Protein

29. ………. Algae differ from other algae by their prokaryotic organization:

Ans. Blue green

30. ----------- are the only organisms which can perform oxygenic photosynthesis and fix atmospheric nitrogen also:

Ans. Cyanobacteria

31. The gametes of Spirogrya show ………. Movement:

Ans. Amoeboid

32. ……………. Extracts are larvicidal in nature:

Ans. Aulosira

33. Heterotrichous thallus consists of an ……….. system and a prostrate system:

Ans. Erect

34. The direction of spiral chloroplast in Spirogyra is …………..:

Ans. Anticlockwise