1. Phycology is the study of:
(A) Fungi
(B) Algae
(C) Bacteria
(D) Mosses
2. Algae are mainly:
(A) Prokaryotic
(B) Eukaryotic
(C) Multicellular only
(D) Non-photosynthetic
3. Which pigment is characteristic of green algae?
(A) Phycoerythrin
(B) Chlorophyll a and b
(C) Fucoxanthin
(D) Anthocyanin
4. Red algae contain the pigment:
(A) Phycoerythrin
(B) Chlorophyll b
(C) Carotene
(D) Xanthophyll
5. Brown algae contain:
(A) Fucoxanthin
(B) Phycoerythrin
(C) Chlorophyll b
(D) Anthocyanin
6. Algae store food mainly as:
(A) Laminarin or Floridean starch
(B) Glycogen
(C) Starch
(D) Sucrose
7. Unicellular algae are mostly:
(A) Green and red
(B) Brown
(C) Blue-green
(D) Yellow-green
8. Algae reproduce by:
(A) Sexual and asexual methods
(B) Binary fission only
(C) Budding only
(D) Spore formation only
9. Volvox is an example of:
(A) Colonial algae
(B) Unicellular algae
(C) Filamentous algae
(D) Multicellular brown algae
10. Spirogyra shows:
(A) Colonial red algae
(B) Unicellular blue-green algae
(C) Filamentous green algae
(D) Multicellular brown algae
11. Which algae are used in agar production?
(A) Chlorella
(B) Laminaria
(C) Gelidium and Gracilaria
(D) Spirogyra
12. Carrageenan is obtained from:
(A) Brown algae
(B) Blue-green algae
(C) Green algae
(D) Red algae
13. Brown algae are commonly found in:
(A) Freshwater
(B) Desert rocks
(C) Terrestrial
(D) Marine environment
14. The largest algae are:
(A) Chlorella
(B) Spirogyra
(C) Laminaria and Macrocystis
(D) Nostoc
15. Diatoms are classified under:
(A) Chlorophyta
(B) Phaeophyta
(C) Rhodophyta
(D) Chrysophyta
16. Diatoms store food as:
(A) Starch
(B) Laminarin
(C) Glycogen
(D) Oil
17. Blue-green algae are also called:
(A) Phaeophyta
(B) Chlorophyta
(C) Rhodophyta
(D) Cyanobacteria
18. Nostoc and Anabaena are examples of:
(A) Green algae
(B) Blue-green algae
(C) Brown algae
(D) Red algae
19. Which algae are nitrogen-fixing?
(A) Nostoc
(B) Chlorella
(C) Laminaria
(D) Gelidium
20. Seaweeds belong to:
(A) Rhodophyta and Phaeophyta
(B) Chlorophyta only
(C) Cyanobacteria only
(D) Bacillariophyta only
21. Algae reproduce sexually by:
(A) Binary fission
(B) Fragmentation
(C) Conjugation
(D) Budding
22. Algae reproduce asexually by:
(A) Fragmentation
(B) Both A and B
(C) Zoospores
(D) Seeds
23. Red algae store food as:
(A) Starch
(B) Laminarin
(C) Glycogen
(D) Floridean starch
24. Green algae are considered ancestors of:
(A) Fungi
(B) Bryophytes and higher plants
(C) Algae only
(D) Pteridophytes
25. Algae produce oxygen through:
(A) Respiration
(B) Fermentation
(C) Photosynthesis
(D) Decomposition
26. Spirogyra reproduces sexually by:
(A) Zoospores
(B) Budding
(C) Fragmentation
(D) Conjugation
27. Chlorella is unicellular and used for:
(A) Spice
(B) Fiber
(C) Biofuel and protein source
(D) Rubber
28. Laminaria is used as:
(A) Fertilizer
(B) Oil production
(C) Source of algin
(D) Fiber production
29. Which algae are filamentous?
(A) Gelidium
(B) Chlorella
(C) Spirogyra, Ulothrix
(D) Fucus
30. Fucus is an example of:
(A) Green algae
(B) Blue-green algae
(C) Red algae
(D) Brown algae
31. Ulothrix is commonly found in:
(A) Freshwater
(B) Marine
(C) Terrestrial
(D) Desert
32. Algae are classified based on:
(A) Leaf arrangement
(B) Flower and fruit
(C) Seed type
(D) Pigments, food storage, and cell wall composition
33. Diatoms have cell wall made of:
(A) Cellulose
(B) Silica
(C) Chitin
(D) Pectin
34. Phycoerythrin pigment gives:
(A) Green color
(B) Yellow color
(C) Brown color
(D) Red color
35. Fucoxanthin pigment gives:
(A) Red color
(B) Brown color
(C) Green color
(D) Blue color
36. Algae are mainly:
(A) Aquatic
(B) Terrestrial
(C) Parasitic
(D) Saprophytic
37. Algae are important in ecosystems as:
(A) Decomposers
(B) Primary producers
(C) Parasites
(D) Consumers
38. Agar obtained from algae is used in:
(A) Textile industry
(B) Rubber production
(C) Paper industry
(D) Microbiology and food industry
39. Seaweed farming is mainly for:
(A) Fiber production
(B) Oil production
(C) Food and industrial products
(D) Spice production
40. Cyanobacteria are prokaryotic but perform:
(A) Respiration
(B) Photosynthesis
(C) Nitrogen fixation only
(D) Fermentation
41. Nostoc can fix nitrogen due to:
(A) Akinetes
(B) Gametes
(C) Zoospores
(D) Heterocysts
42. Algin obtained from brown algae is used in:
(A) Rubber production
(B) Cosmetics, food, and pharmaceuticals
(C) Fiber
(D) Spice production
43. Red algae are mainly:
(A) Freshwater
(B) Marine
(C) Terrestrial
(D) Desert
44. Economic importance of algae includes:
(A) Only food
(B) Only medicine
(C) Food, medicine, fertilizers, and industrial products
(D) Only fertilizer
45. Diatoms are useful as:
(A) Bioindicators and in industry
(B) Soil fertilizers
(C) Rubber source
(D) Spice source
46. Ectocarpus is a:
(A) Green algae
(B) Brown algae
(C) Red algae
(D) Blue-green algae
47. Laminaria is also called:
(A) Spirogyra
(B) Sea lettuce
(C) Rockweed
(D) Kelp
48. Agar is obtained from:
(A) Brown algae
(B) Blue-green algae
(C) Green algae
(D) Red algae
49. Cyanobacteria are also called:
(A) Green algae
(B) Blue-green algae
(C) Brown algae
(D) Red algae
50. Economic uses of algae include:
(A) Food, medicine, fertilizers, agar, and algin
(B) Only food
(C) Only fiber
(D) Only oil