(C) Cyanobacteria are photosynthetic autotrophs. Some species of Cyanobacteria,such as $Nostoc$ and $Anabaena$,possess specialized cells called hetero

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(C) Cyanobacteria are photosynthetic autotrophs. Some species of Cyanobacteria,such as $Nostoc$ and $Anabaena$,possess specialized cells called heterocysts. These heterocysts are responsible for fixing atmospheric nitrogen into ammonia,which is essential for the organism's survival in nitrogen-deficient environments. Therefore,the statement that they lack heterocysts is incorrect.

Class 11 Biology Biological Classification Monera (Prokaryotes)

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Which of the following is incorrect about Cyanobacteria?

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A
They have chlorophyll $a$ similar to green plants.
B
They are photoautotrophs.
C
They lack heterocysts.
D
They often form blooms in polluted water bodies.

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Branched chain lipids occur in the cell membranes of

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$A$ true nucleus is absent in

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$A$ : Majority of bacteria are autotrophs.
$R$ : Chemoheterotrophic nutrition is absent in bacteria.

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Assertion $(S)$: Thermoacidophiles can survive in acidic and high-temperature conditions.
Reason $(R)$: Archaea can survive in extreme conditions.

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$S$ - Statement: Bacteria are divided into two groups based on the staining procedure developed by Gram.
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Which of the following is incorrect about Cyanobacteria?

Similar Questions

Branched chain lipids occur in the cell membranes of

$A$ true nucleus is absent in

$A$ : Majority of bacteria are autotrophs.$R$ : Chemoheterotrophic nutrition is absent in bacteria.

Assertion $(S)$: Thermoacidophiles can survive in acidic and high-temperature conditions.Reason $(R)$: Archaea can survive in extreme conditions.

$S$ - Statement: Bacteria are divided into two groups based on the staining procedure developed by Gram.$R$ - Reason: Bacteria that take up the Gram stain are called Gram-negative.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$ : Majority of bacteria are autotrophs.
$R$ : Chemoheterotrophic nutrition is absent in bacteria.

Assertion $(S)$: Thermoacidophiles can survive in acidic and high-temperature conditions.
Reason $(R)$: Archaea can survive in extreme conditions.

$S$ - Statement: Bacteria are divided into two groups based on the staining procedure developed by Gram.
$R$ - Reason: Bacteria that take up the Gram stain are called Gram-negative.