-
question_answer1)
Which may live as a space parasite in Anthoceros
A)
Ulothrix done
clear
B)
Spirogyra done
clear
C)
Nostoc done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer2)
Incipient nucleus is present in [BVP 2000]
A)
Chlorophyceae done
clear
B)
Rhodophyceae done
clear
C)
Myxophyceae done
clear
D)
Phaeophyceae done
clear
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question_answer3)
Which of the following has polar nodule on both the ends
A)
Akinetes done
clear
B)
Hormogonia done
clear
C)
Heterocysts done
clear
D)
None of these done
clear
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question_answer4)
Which of the following shows the absence of chlorophyll 'b'
A)
Green algae done
clear
B)
Red algae done
clear
C)
Blue-green algae done
clear
D)
Brown algae done
clear
View Solution play_arrow
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question_answer5)
Which of the following is used as green manure
A)
Bacteria done
clear
B)
Mycoplasma done
clear
C)
Nostoc done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer6)
Nostoc may form
A)
Simple colony done
clear
B)
Compound colony done
clear
C)
Both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer7)
Nostoc is named after
A)
Fritsch done
clear
B)
Smith done
clear
C)
Vaucher done
clear
D)
R.N. Singh done
clear
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question_answer8)
The matrix around Nostoc colony is
A)
Gelatinous done
clear
B)
Hard and corky done
clear
C)
Cartilaginous done
clear
D)
No matrix at all done
clear
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question_answer9)
Angiosperm in which Nostoc remains endophyte is
A)
Melia indica done
clear
B)
Arachis hypogea done
clear
C)
Gunnera manicata done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer10)
Which of the following may occur in arctic and alpine meadows
A)
Spirogyra done
clear
B)
Ulothrix done
clear
C)
Nostoc done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer11)
Which of the following is coloured portion in the cell of Nostoc
A)
Chromoplasm done
clear
B)
Centroplasm done
clear
C)
Central body done
clear
D)
Genophore done
clear
View Solution play_arrow
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question_answer12)
Which of the following characters of Nostoc resembles other prokaryotes
A)
Absence of definite nucleus done
clear
B)
Ability to fix nitrogen done
clear
C)
Multiplication by fission done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer13)
Which cell division occurs in Nostoc
A)
Mitotic done
clear
B)
Meiotic done
clear
C)
Amitotic done
clear
D)
All done
clear
View Solution play_arrow
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question_answer14)
Which of the following movement may be found in blue-green algae
A)
Flagellar done
clear
B)
Ciliary done
clear
C)
Gliding done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer15)
Which of the following important features are found in blue-green algae
A)
Abundant secretion of pectin done
clear
B)
Presence of phycocyanin - C as dominant pigment done
clear
C)
No plastids done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer16)
Which is absent in Nostoc
A)
Sex organs done
clear
B)
Motile cells done
clear
C)
Both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer17)
The fossil record of blue-green algae is in
A)
Palaeozoic done
clear
B)
Pre?palaeozoic done
clear
C)
Carboniferous done
clear
D)
None of these done
clear
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question_answer18)
What is the photosynthetic product in blue-green algae
A)
Normal starch done
clear
B)
Glycogen done
clear
C)
Cyanophycean starch resembling glycogen done
clear
D)
None of these done
clear
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question_answer19)
Which of the following granules are present in cyanobacteria
A)
Polyglucon granules done
clear
B)
Carboxysomes done
clear
C)
Gas vacuoles done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer20)
According to Bradley and Carr, the nitrogen fixation takes place in
A)
Akinetes done
clear
B)
Vegetative cells done
clear
C)
Heterocysts done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer21)
In Nostoc the heterocysts are
A)
Terminal done
clear
B)
Intercalary done
clear
C)
Both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer22)
Which of the following contains polyhedral bodies
A)
Mycoplasma done
clear
B)
Bacteria done
clear
C)
Nostoc done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer23)
Which of the following may be called as fission algae
A)
Nostoc done
clear
B)
Oedogonium done
clear
C)
Volvox done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer24)
Single filament of Nostoc without mucilage sheath is known as [MP PMT 1986; AIIMS 1998]
A)
Hyphae done
clear
B)
Colony done
clear
C)
Trichome done
clear
D)
Mycilium done
clear
View Solution play_arrow
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question_answer25)
In which of the following there is no sexual reproduction [MP PMT 1987; CBSE PMT 1995, 99; BVP 2001]
A)
Ulothrix done
clear
B)
Nostoc done
clear
C)
Aspergillus done
clear
D)
Volvox done
clear
View Solution play_arrow
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question_answer26)
Which of the following algae is symbiotic and nitrogen fixing [Pb. PMT 1999]
A)
Spirogyra done
clear
B)
Cladophora done
clear
C)
Anabaena done
clear
D)
Oedogonium done
clear
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question_answer27)
Blue-green algae and bacteria show similarity in
A)
Both show anaerobic respiration done
clear
B)
Both show the presence of chlorophyll done
clear
C)
Both are devoid of true nucleus done
clear
D)
None of the above done
clear
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question_answer28)
Prokaryotes are characterized by [AFMC 1993]
A)
A true nucleus with double layered nuclear membrane is absent done
clear
B)
Well developed nucleus with double layered nuclear membrane present done
clear
C)
Presence of cell wall made of chitins, mucopolysaccharides and absence of cell organelles like mitochondria and chloroplasts done
clear
D)
Autotrophic in nature and only DNA is present done
clear
View Solution play_arrow
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question_answer29)
The cells of cyanobacteria and bacteria exhibit similarity in having [BHU 1982]
A)
Plastids done
clear
B)
Nuclei (True) done
clear
C)
Centrosome done
clear
D)
DNA done
clear
View Solution play_arrow
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question_answer30)
The name cyanobacteria refers to [MP PMT 1992]
A)
Bacteria done
clear
B)
Blue-green algae done
clear
C)
Yeast done
clear
D)
Fungi done
clear
View Solution play_arrow
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question_answer31)
Cyanobacteria is a
A)
Category of bacteria done
clear
B)
Is the new name of all bacteria done
clear
C)
New name of myxophyceae or blue-green algae done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer32)
Prokaryotes are identified by [Bihar MDAT 1995]
A)
Absence of mitochondria done
clear
B)
Absence of nuclear membrane done
clear
C)
Absence of chloroplast done
clear
D)
Absence of cell membrane done
clear
View Solution play_arrow
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question_answer33)
Which were the organisms who changed earth?s surface from reducing to the oxidizing [BHU 2001]
A)
Autotrophs done
clear
B)
Heterotrophs done
clear
C)
Photoautotrophs done
clear
D)
Chemotrophs done
clear
View Solution play_arrow
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question_answer34)
When green algae are illuminated, motile aerobic bacteria usually accumulate near them. This is because, bacteria [NCERT 1984]
A)
Have attraction for light done
clear
B)
Have attraction for green plants done
clear
C)
Have attraction for oxygen done
clear
D)
Have attraction for \[C{{O}_{2}}\] done
clear
View Solution play_arrow
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question_answer35)
Blue-green algae belong to [CPMT 1982]
A)
Myxomycetes done
clear
B)
The eukaryota done
clear
C)
The prokaryota done
clear
D)
Neither the eukaryota nor the prokaryota done
clear
View Solution play_arrow
-
question_answer36)
During rainy seasons, the ground becomes slippery due to dense growth of [BHU 1999]
A)
Lichens done
clear
B)
Bacteria done
clear
C)
Green algae done
clear
D)
Cyanobacteria done
clear
View Solution play_arrow
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question_answer37)
Hormogonia are the vegetatively reproducing structures of [AIIMS 1999]
A)
Ulothrix done
clear
B)
Spirogyra done
clear
C)
Oscillatoria done
clear
D)
Chlamydomonas done
clear
View Solution play_arrow
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question_answer38)
Atmospheric nitrogen-fixation is carried on by [Pb. PMT 1999]
A)
Funaria done
clear
B)
Anabaena done
clear
C)
Chlamydomonas done
clear
D)
Fern gametophyte done
clear
View Solution play_arrow
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question_answer39)
Which is not true for the heterocyst of Nostoc
A)
Intercalary position done
clear
B)
Site of nitrogen fixation done
clear
C)
Presence of polar nodules done
clear
D)
\[C{{O}_{2}}\] fixation ability done
clear
View Solution play_arrow
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question_answer40)
Cyanophyceae has got [DPMT 1991]
A)
Definite nucleus and plastid done
clear
B)
No definite nucleus but plastid done
clear
C)
Neither definite nucleus nor plastid done
clear
D)
Definite nucleus but no plastid done
clear
View Solution play_arrow
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question_answer41)
The following micro-organisms have the property of photosynthesis as well as nitrogen fixation
A)
Azotobacter done
clear
B)
Rhizobium done
clear
C)
Cyanobacteria done
clear
D)
Clostridium done
clear
View Solution play_arrow
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question_answer42)
Unicellular cyanobacteria reproduce asexually by [MP PMT 1997]
A)
Conjugation done
clear
B)
Fragmentation done
clear
C)
Binary fission done
clear
D)
Hormogones done
clear
View Solution play_arrow
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question_answer43)
Heterocysts are found in certain [BHU 1995; MP PMT 1997]
A)
Viruses done
clear
B)
Bacteria done
clear
C)
Cyanobacteria done
clear
D)
Mycoplasmas done
clear
View Solution play_arrow
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question_answer44)
Cynobacteria is a [CPMT 2002]
A)
Virus which affect bacteria done
clear
B)
Bacteria which used cyanide as nutrition done
clear
C)
Algae which has blue-green pigment done
clear
D)
Colourful fungi done
clear
View Solution play_arrow
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question_answer45)
Nostoc is characteristic in having [MP PMT 1998]
A)
Cellulose cell wall done
clear
B)
Uniflagellated zoospores done
clear
C)
Chlorophyll 'e' done
clear
D)
Sexual reproduction done
clear
View Solution play_arrow
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question_answer46)
Nostoc is a [MP PMT 1999; MHCET 2007]
A)
Cyanobacteria done
clear
B)
Beaded bacterium done
clear
C)
Bacteriophage done
clear
D)
Parasite done
clear
View Solution play_arrow
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question_answer47)
In prokaryotes, the genetic material is [CBSE PMT 1999; RPMT 1999]
A)
Linear DNA with histones done
clear
B)
Circular DNA with histones done
clear
C)
Linear DNA without histones done
clear
D)
Circular DNA without histones done
clear
View Solution play_arrow
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question_answer48)
Cyanobacteria originated about how many years ago [Pb. PMT 2000]
A)
1 billion done
clear
B)
2 billion done
clear
C)
3 billion done
clear
D)
4 billion done
clear
View Solution play_arrow
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question_answer49)
Sexual reproduction is absent in [MP PMT 2000]
A)
Cyanobacteria done
clear
B)
Bacteria done
clear
C)
Eukaryote done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer50)
Nostoc is known to perform [MP PMT 2001]
A)
Only photosynthesis done
clear
B)
Photosynthesis and nitrogen fixation simultaneously done
clear
C)
Only nitrogen fixation done
clear
D)
Either photosynthesis or nitrogen fixation at a time done
clear
View Solution play_arrow
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question_answer51)
Nitrogenase enzyme is found in Nostoc in the cell of [MP PMT 2001]
A)
Vegetative done
clear
B)
Heterocyst done
clear
C)
Both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer52)
Cyanobacteria of great nutritive value is [Kerala CET 2001]
A)
Gleocapsa done
clear
B)
Scytonema done
clear
C)
Stigonema done
clear
D)
Spirulina done
clear
View Solution play_arrow
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question_answer53)
The characteristic of blue green algae is [RPMT 2002]
A)
DNA without histone done
clear
B)
Nuclear membrane absent done
clear
C)
70 S ribosomes done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer54)
Which is not a cyanobacterium [AFMC 2002]
A)
Lyngbya done
clear
B)
Plectonema done
clear
C)
Anabaena done
clear
D)
Sinorhizobium done
clear
View Solution play_arrow
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question_answer55)
Which of the following is a Prokaryote [MP PMT 2002]
A)
Chlorella done
clear
B)
Chlamydomonas done
clear
C)
Protomyces done
clear
D)
Oscillatoria done
clear
View Solution play_arrow
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question_answer56)
Which was first photosynthetic organism [DPMT 2003]
A)
Green algae done
clear
B)
Red algae done
clear
C)
Cyanobacteria done
clear
D)
Brown algae done
clear
View Solution play_arrow
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question_answer57)
The blue-green algae are so called as they have in addition to green pigment chlorophyll, a blue pigment known as [KCET 1994; MP PMT 1996; Kerala PMT 2003]
A)
Phycocyanin done
clear
B)
Chromoplasm done
clear
C)
Cyanophycin done
clear
D)
Phycoerythrin done
clear
View Solution play_arrow
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question_answer58)
Blue-green algae are included in [CPMT 1982; CBSE PMT 1996; MP PMT 2004]
A)
Eukaryotes done
clear
B)
Rhodophyceae done
clear
C)
Prokaryotes done
clear
D)
Chlorophyceae done
clear
View Solution play_arrow
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question_answer59)
Which of the following is not a blue-green algae [CPMT 2004]
A)
Nostoc done
clear
B)
Anabaena done
clear
C)
Lichen done
clear
D)
Aulosiras done
clear
View Solution play_arrow
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question_answer60)
Anabaena has an immense potential as a [DPMT 2004]
A)
Biofertilizer done
clear
B)
Food done
clear
C)
Medicines done
clear
D)
Sewage disposal done
clear
View Solution play_arrow
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question_answer61)
Which of the following may cause water blooms [BVP 2004]
A)
Bacteria done
clear
B)
Mycoplasma done
clear
C)
Virus done
clear
D)
Blue-green algae done
clear
View Solution play_arrow
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question_answer62)
Nitrogen fixation by Nostoc takes place in [MP PMT 1996; Orissa JEE 2004]
A)
Heterocysts done
clear
B)
Vegetative cells done
clear
C)
Akinetes done
clear
D)
Hormogonia done
clear
View Solution play_arrow
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question_answer63)
Cyanobacteria are [DPMT 2002; BVP 2004]
A)
Mosses which attack bacteria done
clear
B)
Bacteria which attack cyanophyceae done
clear
C)
Autotrophic organism with phycocyanin done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer64)
Which of the following may be used in the reclaimation of soil
A)
Mycoplasma done
clear
B)
Virus done
clear
C)
Nostoc done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer65)
Which species of Nostoc produces endospores
A)
Nostoc microscopilum done
clear
B)
Nostoc commune done
clear
C)
Both (a) and (b) done
clear
D)
None done
clear
View Solution play_arrow
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question_answer66)
Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer [MP PMT 1997; CBSE PMT 1993, 98, 99]
A)
Mycorrhiza done
clear
B)
Azolla pinnata done
clear
C)
Cyanobacteria done
clear
D)
Legume-Rhizobium symbiosis done
clear
View Solution play_arrow
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question_answer67)
Cell wall of Nostoc is made up of
A)
Two layers of microfibrils done
clear
B)
Three layers of microfibrils done
clear
C)
Four layers of microfibrils done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer68)
Hormogonia of cyanobacteria are
A)
Spore producing organs done
clear
B)
Products of syngamy done
clear
C)
Fragmented trichomes done
clear
D)
Cells adjacent to heterocyst done
clear
View Solution play_arrow
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question_answer69)
Which of the following statements is right [KCET 2004]
A)
Fronds are found in bryophytes done
clear
B)
Multiciliate sperms are found in angiosperms done
clear
C)
Diatoms produce basidiospores done
clear
D)
Heterocysts are found in Nostoc done
clear
View Solution play_arrow
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question_answer70)
The most primitive in the following are [BHU 2005]
A)
Cyanobacteria done
clear
B)
Bryophytes done
clear
C)
Gymnosperms done
clear
D)
Monocots done
clear
View Solution play_arrow
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question_answer71)
Auxospores and hormocysts are formed respectively, by [CBSE PMT 2005]
A)
Some diatoms and several cyanobacteria done
clear
B)
Some cyanobacteria and many diatoms done
clear
C)
Several cyanobacteria and several diatoms done
clear
D)
Several diatoms and a few cyanobacteria done
clear
View Solution play_arrow
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question_answer72)
Which of the following plants is used as biofertiliser [CET 2005]
A)
Nostoc done
clear
B)
Funaria done
clear
C)
Volvox done
clear
D)
Rhizopus done
clear
View Solution play_arrow
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question_answer73)
Pigment phycocyanin and phycoerythrin are found in [Kerala CET 2005]
A)
Bacillariophyceae done
clear
B)
Archaebacteria done
clear
C)
Eubacteria done
clear
D)
Cynobacteria done
clear
E)
Chlorophyceae done
clear
View Solution play_arrow