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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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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.