Fungi differ from algae in being
(a) Coenocytic
(b) Without motile gametes
(c) Without unicellular forms
(d) Without chlorophyll and possessing chitinised wall
Red oceanic tides can be due to
(a) Diatoms
(b) Red algae
(c) Dinophyceae
(d) Blue-green algae
The name cyanobacteria refers to
(a) Bacteria
(b) Blue-green algae
(c) Yeast
(d) Fungi
Which of the following algae is symbiotic and nitrogen-fixing?
(a) Spirogyra
(b) Cladophora
(c) Anabaena
(d) Oedogonium
Unlike other algae, diatoms do not readily decay due to
(a) Siliceous wall
(b) Mucilaginous wall
(c) Waterproof cell wall
(d) Nonliving cells
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During rainy seasons, the ground becomes slippery due to the dense growth of
(a) Lichens
(b) Bacteria
(c) Green algae
(d) Cyanobacteria
Which of the following may be called fission algae?
(a) Nostoc
(b) Oedogonium
(c) Volvox
Which algae was the first photosynthetic organism?
(a) Green
(b) Red
(c) Cyanobacteria
(d) Brown
The fossil record of blue-green algae is in
(a) Palaeozoic
(b) Pre–palaeozoic
(c) Carboniferous
Algae often float on the surface of the water during the day but sink during the night due to
(a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis
(b) Becoming light as they consume most of their food in the night
(c) warming action of the sun during the day
(d) Release of absorbed air by warming of water
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Muramic acid is present in the cell walls of
(a) Yeast
(b) Bacteria
(c) Rhizopus
(d) Green algae
Which of the following movements may be found in blue-green algae?
(a) Flagellar
(b) Ciliary
(c) Gliding
The association of algae and fungi for the formation of lichens is an example of
(a) Parasitism
(b) Mutualism
(c) Amensalism
(d) Predation
Carrageenin, a jelly-like substance, is derived from marine algae known as
(a) Kelp
(b) Diatoms
(c) Flagellates
(d) Irish moss
Which of the following does not evolve oxygen?
(a) Photosynthetic bacteria
(b) Blue-green algae
(c) Autotrophic plants
(d) Green algae
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Helotism is a term used for the symbiosis of Algae with
(a) bacteria
(b) bryophytes
(c) pteridophytes
(d) fungi
Which algae shows the absence of chlorophyll ‘b‘?
(a) Green
(b) Red
(c) Blue-green
(d) Brown
The classification of the group algae is based on
(a) Nature of shape
(b) Nature of pigment
(c) Nature of length
Blue-green algae are similar to
(a) Bacteria
(b) Viruses
Which of the following does not evolve oxygen?
(a) Green algae
(b) Photosynthetic bacteria
(c) Autotrophic plants
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Prokaryota includes
(a) Mycoplasma
(b) Ulothrix
(c) Fungi
(d) Mycoplasma and blue-green algae
Microscopic green algae of the ocean are called
(a) Spirogyra
(b) Volvox
(c) Diatoms
(d) Ulotrima
Which of the following groups of plants are highly useful in increasing soil fertility?
(a) Red algae
(b) Fungi
(c) Bacteria
(d) Bryophytes
Who pointed out the significance of blue-green algae in nitrogen fixation?
(a) G. E. Fogg
(b) P.K. De
(c) R.N. Bolton
(d) Y. Bharya
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Mycoplasma is related to
(a) Algae
(b) Bacteriophage
(c) Virus
(d) L–form bacteria
Algae present in soil fixes atmospheric __
(a) oxygen
(b) nitrogen
(c) carbon-dioxide
(d) helium
Which of the following decomposes the remnants of the plants into CO2 and water?
(a) Algae
(b) Virus
(c) Sunlight
(d) Bacteria
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Alga is useful to man because
(a) They help in restoring the fertility of the soil
(b) They help reduce pollution and clear the atmosphere
(c) They can be grown in tanks
(d) Of their high protein content, some algae may be used as future food
What is the cause of Anthrax disease?
(a) Virus
(b) Bacteria
(c) Mycoplasma
(d) Algae
Which of the following does not contain chlorophyll?
(a) Fungi
(b) Algae
(c) Bryophyta
(d) Pteridophyta
In lichens, the following organisms are in symbiotic association with Algae:
(a) Fungi
(b) Bacteria
(c) Protozoa
Little leaf of brinjal is caused by
(a) Virus
(b) Fungus
(c) Mycoplasma
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The alga causing Red snowball in the alpine region is
(a) Batrachospermum
(b) Oscillatoria
(c) Haematococcus
In the five-kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen-fixing bacteria, and methanogenic archaebacteria
(a) Monera
(b) Fungi
(c) Plantae
(d) Protista
Algae with photosynthetic pigments possess nutrition
(a) Holozoic
(b) Saprophytic
(c) Holophytic
(d) Parasitic
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The symbiotic association of fungi and algae is called
(a) Lichen
(b) Mycorrhiza
(c) Mycoplasma
(d) Parasitic root
The disease of the cardio-vascular system is caused by
(a) Mycoplasma
(b) Cyanobacteria
Which of the following symbiotic associations is not useful as a biofertilizer?
(a) Rhizobium and leguminous roots
(b) Azolla and Anabaena
(c) Algae and fungi
(d) Roots of higher plants and fungi
