Question 1: What are algae?
a) Plants
b) Fungi
c) Photosynthetic protists
d) Bacteria
Answer: c) Photosynthetic protists
Question 2: Which pigment is responsible for the green color of algae?
a) Chlorophyll
b) Carotenoids
c) Phycobilins
d) Xanthophylls
Answer: a) Chlorophyll
Question 3: What is the primary mode of nutrition in algae?
a) Heterotrophic
b) Autotrophic
c) Saprophytic
d) Parasitic
Answer: b) Autotrophic
Question 4: Which of the following is NOT a type of algae?
a) Green algae
b) Brown algae
c) Red algae
d) Black algae
Answer: d) Black algae
Question 5: What is the cell wall of algae made of?
a) Cellulose
b) Chitin
c) Peptidoglycan
d) Silica
Answer: a) Cellulose
Question 6: Which algae are commonly found in freshwater habitats?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 4: Which algae are commonly found in marine habitats?
a) Green algae
b) Brown algae
c) Red algae
d) Both b and c
Answer: d) Both b and c
Question 5: What is the storage product of green algae?
a) Starch
b) Laminarin
c) Floridean starch
d) Glycogen
Answer: a) Starch
Question 6: Which algae are used as a food source for humans?
a) Spirulina
b) Chlorella
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 7: What is the study of algae called?
a) Mycology
b) Phycology
c) Bryology
d) Algology
Answer: b) Phycology
Question 8: Which algae are commonly known as "seaweed"?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: b) Brown algae
Question 9: Which algae are used in the production of agar?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: c) Red algae
Question 10: Which algae are used in the production of carrageenan?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: c) Red algae
Question 11: Which algae are used in the production of alginates?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: b) Brown algae
Question 12: Which algae are commonly used in biofuel production?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 13: Which algae are known for their silica cell walls?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: d) Diatoms
Question 14: Which algae are commonly found in hot springs?
a) Green algae
b) Brown algae
c) Red algae
d) Blue-green algae (Cyanobacteria)
Answer: d) Blue-green algae (Cyanobacteria)
Question 15: Which algae are responsible for red tides?
a) Dinoflagellates
b) Diatoms
c) Green algae
d) Brown algae
Answer: a) Dinoflagellates
Question 16: Which algae are commonly used in wastewater treatment?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 17: Which algae are commonly used in the production of omega-3 fatty acids?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: d) Diatoms
Question 18: Which pigment is responsible for the red color of red algae?
a) Chlorophyll
b) Phycoerythrin
c) Carotenoids
d) Xanthophylls
Answer: b) Phycoerythrin
Question 19: Which pigment is responsible for the brown color of brown algae?
a) Chlorophyll
b) Fucoxanthin
c) Phycoerythrin
d) Xanthophylls
Answer: b) Fucoxanthin
Question 20: Which pigment is responsible for the blue-green color of cyanobacteria?
a) Chlorophyll
b) Phycocyanin
c) Carotenoids
d) Xanthophylls
Answer: b) Phycocyanin
Question 21:Which pigment is responsible for the yellow color of diatoms?
a) Chlorophyll
b) Carotenoids
c) Phycoerythrin
d) Xanthophylls
Answer: b) Carotenoids
Question 22: Which pigment is responsible for the green color of green algae?
a) Chlorophyll
b) Carotenoids
c) Phycoerythrin
d) Xanthophylls
Answer: a) Chlorophyll
Question 23: What is the primary mode of reproduction in algae?
a) Sexual
b) Asexual
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 24: Which of the following is a method of asexual reproduction in algae?
a) Binary fission
b) Fragmentation
c) Spore formation
d) All of the above
Answer: d) All of the above
Question 25: What is the name of the asexual spores produced by algae?
a) Zoospores
b) Gametes
c) Zygotes
d) Sporophytes
Answer: a) Zoospores
Question 26: What is the name of the sexual spores produced by algae?
a) Zoospores
b) Gametes
c) Zygotes
d) Sporophytes
Answer: c) Zygotes
Question 27: Which algae exhibit alternation of generations?
a) Green algae
b) Brown algae
c) Red algae
d) All of the above
Answer: d) All of the above
Question 28: What is the primary role of algae in aquatic ecosystems?
a) Decomposers
b) Primary producers
c) Parasites
d) Predators
Answer: b) Primary producers
Question 29: Which algae are responsible for producing a significant portion of Earth's oxygen?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: d) Diatoms
Question 30: Which algae are commonly used as bioindicators of water quality?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: d) Diatoms
Question 31: Which algae are commonly used in the production of biofuels?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 32: Which algae are commonly used in the production of fertilizers?
a) Green algae
b) Brown algae
c) Red algae
d) Blue-green algae (Cyanobacteria)
Answer: d) Blue-green algae (Cyanobacteria)
Question 33: Which algae are used in the production of agar?
a) Red algae
b) Brown algae
c) Green algae
d) Diatoms
Answer: a) Red algae
Question 34: Which algae are used in the production of carrageenan?
a) Red algae
b) Brown algae
c) Green algae
d) Diatoms
Answer: a) Red algae
Question 35: Which algae are used in the production of alginates?
a) Brown algae
b) Red algae
c) Green algae
d) Diatoms
Answer: a) Brown algae
Question 36: Which algae are used as a food source for humans?
a) Spirulina
b) Chlorella
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 37: Which algae are used in the production of biofuels?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 38: Which algae are used in the production of omega-3 fatty acids?
a) Diatoms
b) Brown algae
c) Red algae
d) Green algae
Answer: a) Diatoms
Question 39: Which algae are used in wastewater treatment?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 40: Which algae are used in the production of fertilizers?
a) Blue-green algae (Cyanobacteria)
b) Brown algae
c) Red algae
d) Green algae
Answer: a) Blue-green algae (Cyanobacteria)
Question 41: Which algae are used in the production of cosmetics?
a) Red algae
b) Brown algae
c) Green algae
d) Diatoms
Answer: b) Brown algae
Question 42: Which algae are used in the production of pharmaceuticals?
a) Red algae
b) Brown algae
c) Green algae
d) Diatoms
Answer: a) Red algae
Question 43: What is an algal bloom?
a) Rapid growth of algae in water bodies
b) Death of algae in water bodies
c) Migration of algae to new habitats
d) None of the above
Answer: a) Rapid growth of algae in water bodies
Question 44: What causes algal blooms?
a) Excess nutrients (eutrophication)
b) Lack of sunlight
c) Low temperatures
d) High salinity
Answer: a) Excess nutrients (eutrophication)
Question 45: Which algae are responsible for harmful algal blooms (HABs)?
a) Dinoflagellates
b) Diatoms
c) Green algae
d) Brown algae
Answer: a) Dinoflagellates
Question 46: What is the primary toxin produced by harmful algal blooms?
a) Saxitoxin
b) Cyanotoxin
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 47: What is the effect of harmful algal blooms on aquatic life?
a) Oxygen depletion
b) Fish kills
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 48: Which algae belong to the division Chlorophyta?
a) Green algae
b) Brown algae
c) Red algae
d) Diatoms
Answer: a) Green algae
Question 48: Which algae belong to the division Phaeophyta?
a) Brown algae
b) Green algae
c) Red algae
d) Diatoms
Answer: a) Brown algae
Question 49: Which algae belong to the division Rhodophyta?
a) Red algae
b) Green algae
c) Brown algae
d) Diatoms
Answer: a) Red algae
Question 50: Which algae belong to the division Bacillariophyta?
a) Diatoms
b) Green algae
c) Brown algae
d) Red algae
Answer: a) Diatoms
Question 51: Which algae belong to the division Cyanophyta?
a) Blue-green algae (Cyanobacteria)
b) Green algae
c) Brown algae
d) Red algae
Answer: a) Blue-green algae (Cyanobacteria)
Question 52: Where are green algae commonly found?
a) Freshwater
b) Marine water
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 53: Where are brown algae commonly found?
a) Marine water
b) Freshwater
c) Terrestrial habitats
d) None of the above
Answer: a) Marine water
Question 54: Where are red algae commonly found?
a) Marine water
b) Freshwater
c) Terrestrial habitats
d) None of the above
Answer: a) Marine water
Question 55: Where are diatoms commonly found?
a) Freshwater
b) Marine water
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 56: Where are blue-green algae (Cyanobacteria) commonly found?
a) Freshwater
b) Marine water
c) Terrestrial habitats
d) All of the above
Answer: d) All of the above
Question 56: What is the cell wall of green algae made of?
a) Cellulose
b) Chitin
c) Silica
d) Peptidoglycan
Answer: a) Cellulose
Question 57: What is the cell wall of diatoms made of?
a) Silica
b) Cellulose
c) Chitin
d) Peptidoglycan
Answer: a) Silica
Question 58: What is the cell wall of red algae made of?
a) Cellulose and agar
b) Cellulose and carrageenan
c) Cellulose and alginates
d) Cellulose and chitin
Answer: b) Cellulose and carrageenan
Question 59: What is the cell wall of brown algae made of?
a) Cellulose and alginates
b) Cellulose and carrageenan
c) Cellulose and agar
d) Cellulose and chitin
Answer: a) Cellulose and alginates
Question 60: What is the cell wall of blue-green algae (Cyanobacteria) made of?
a) Peptidoglycan
b) Cellulose
c) Chitin
d) Silica
Answer: a) Peptidoglycan
Question 61: What is the primary mode of reproduction in algae?
a) Sexual
b) Asexual
c) Both a and b
d) None of the above
Answer: c) Both a and b
Question 62: Which of the following is a method of asexual reproduction in algae?
a) Binary fission
b) Fragmentation
c) Spore formation
d) All of the above
Answer: d) All of the above
Question 63: What is the name of the asexual spores produced by algae?
a) Zoospores
b) Gametes
c) Zygotes
d) Sporophytes
Answer: a) Zoospores
Question 64: What is the name of the sexual spores produced by algae?
a) Zoospores
b) Gametes
c) Zygotes
d) Sporophytes
Answer: c) Zygotes
Question 65: Which algae exhibit alternation of generations?
a) Green algae
b) Brown algae
c) Red algae
d) All of the above
Answer: d) All of the above
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