Question

Which of the following are likely to be present in deep-sea water?

• A. Eubacteria
• B. Saprophytic fungi
• C. Archaebacteria
• D. Blue-green algae

Answer 1

The correct option is C

Archaebacteria

The correct option is C.

The explanation for the correct option:

1. The archaebacteria are chemoautotrophs or chemosynthetic bacteria, and they are found in deep marine water where no light reaches them, unlike sulfur bacteria and methanogens.
2. The unique cell wall construction of archaebacteria allows them to survive in harsh environments better than other bacteria.

The explanation for the incorrect options:

Option A:

1. Eubacteria are referred to as prokaryotic microbes having only one cell, lacking a nucleus, and circular DNA.
2. Eubacteria can be classified as gram-negative or gram-positive.
3. They have been used in agricultural and pharmaceutical industries widely.

Option B:

1. Saprophytic fungi refer to those fungi which grow and develop on detritus material.
2. Detritus material refers to dead and decaying material.
3. These fungi are terrestrial and found in forest regions.

Option D:

1. Blue-green algae are also called Cyanobacteria.
2. These are aquatic in nature and found on the surface of the water.
3. some of the species are also found in terrestrial habitats.

Final answer: Archaebacteria are likely to be present in deep-sea water.