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Nostoc has a characteristic (a) Non-cell...

Nostoc has a characteristic
(a) Non-cellulosic cell wall
(b) Uniflagellate zoospore
(c) Chlorophyll e
(d) Sexual reproduction

A

Non-cellulosi cell wall

B

Uniflagellate zoospore

C

Chlorophyll e

D

Sexual reproduction.

Text Solution

AI Generated Solution

The correct Answer is:
To determine the characteristic of Nostoc, we will analyze each option provided in the question step by step. ### Step 1: Understand what Nostoc is Nostoc is a genus of blue-green algae, which are also known as cyanobacteria. They are unicellular organisms that have specific characteristics. ### Step 2: Evaluate Option (a) Non-cellulosic cell wall Nostoc has a cell wall that is non-cellulosic. This means that cellulose, which is common in the cell walls of plants, is absent in Nostoc. Instead, the cell wall is made up of pseudomurines, which is a specific compound found in the cell walls of some prokaryotes including cyanobacteria. Therefore, this option is correct. ### Step 3: Evaluate Option (b) Uniflagellate zoospore Nostoc does not have uniflagellate zoospores. Instead, it reproduces asexually through fragmentation and does not produce flagellated spores. Thus, this option is incorrect. ### Step 4: Evaluate Option (c) Chlorophyll e Nostoc contains chlorophyll A, not chlorophyll E. Chlorophyll A is the primary pigment involved in photosynthesis in most cyanobacteria, including Nostoc. Therefore, this option is incorrect. ### Step 5: Evaluate Option (d) Sexual reproduction Nostoc does not reproduce sexually. It primarily reproduces asexually through fragmentation. Therefore, this option is also incorrect. ### Conclusion After evaluating all the options, the only correct characteristic of Nostoc is: (a) Non-cellulosic cell wall. ### Final Answer The correct answer is (a) Non-cellulosic cell wall. ---
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