Question:
Select the correct combination of the statements(a-d) regarding the characteristics of certain organisms :
(i) Methanogens are archaebacteria which produce methane in marshy area
(ii) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose
(iv) Mycoplasma lack a cell wall and can survive without oxygen.
The correct statements are :
Select the correct combination of the statements(a-d) regarding the characteristics of certain organisms :
(i) Methanogens are archaebacteria which produce methane in marshy area
(ii) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose
(iv) Mycoplasma lack a cell wall and can survive without oxygen.
The correct statements are :
Updated On: Jul 13, 2024
- (ii) & (iii)
- (i),(ii) & (iii)
- (ii), (iii) & (iv)
- (i), (ii) & (iv)
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The Correct Option is D
Solution and Explanation
Chemosynthetic autotrophic bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production. They play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.
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Concepts Used:
Kingdom Monera
Characteristics of Monera Kingdom
The organisms in this kingdom have the following characteristics: -
- Monerans are single-celled creatures.
- The cell wall is made up of peptidoglycan and is stiff.
- Binary fission is asexual reproduction.
- They have 70S ribosomes in them.
- The locomotory organ is the flagella.
- Organelles such as mitochondria, lys
- osomes, plastids, Golgi bodies, endoplasmic reticulum, centrosome, and others are not present.
- These are decomposers and mineralizers for the environment
