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Earn 100
The cyanobacteria have chlorophyll-a similar to green plants. These organisms
(a) are unicellular, colonial or filamentous, marine or terrestrial algae
(b) are surrounded by gelatinous sheath
(c) perform both carbon and nitrogen reduction
50% studentsanswered this correctly
Important Questions on Biological Classification
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Out of the total, ___ (A)___ bacteria are photolithotrophic and they synthesize their food from ____(B)_____ substances.
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The Archaebacteria which occur in gut of ruminant animals
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Match the column I and column II and select the correct option:
| Column -1 | Column - II |
| (a) Cholera | (ii) Clostridium |
| (b) Diphtheria | (ii) Salmonella |
| (c) Tetanus | (iii) Vibrio |
| (d) Typhoid | (iv) Corynebacterium |
**Two genera names were same, so one was changed.**
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Read the following statements and select the correct options that are true for cyanobacteria:
(a) The colonies are generally surrounded by a gelatinous sheath.
(b) They form blooms in polluted water bodies.
(c) They show nitrogenase activity in heterocyst.
(d) They perform oxygenic photosynthesis in a vegetative cell only.
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Which of the following is incorrect w.r.t. Archaebacteria?
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Clostridium botulinum is
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All the given characters are correct for Mycoplasma, except:
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What is incorrect for Nostoc?
