Types of Archaea

Q.

What is the difference between eubacteria and archaebacteria?

Q.

State two economically important uses of:
(a) Heterotrophic bacteria
(b) Archaebacteria

Q. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the :

1. Eubacteria
2. Halophiles
3. Thermoacidophiles
4. Methanogens

Q. Thermococcus, Methanococcus and Methanobacterium exemplify:

1. Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
2. Bacteria that contain a cytoskeleton and ribosomes
3. Archaebacteria that contain proteins homologous to eukaryotic core histones
4. Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.

Q.

What is true for archaebacteria ?

1. All Halophiles
2. All Photosynthetic
3. Oldest living beings
4. All fossils

Q. Which is excluded from Whittaker's five kingdom classification?

1. Algae
2. Viruses
3. Bacteria
4. Fungi

Q.

Do archaebacteria have a nucleus?

Q. Which among the following is the habitat of methanogens?

1. Sulphur rocks
2. Marshy areas
3. Acidic environments
4. Hot springs

Q. Which bacteria is utilized in Gober gas plant ?

1. Methanogens
2. Nitrifying bacteria
3. Ammonifying bacteria
4. Denitrifying bacteria

Q.

Archaebacteria are the special type of bacteria since they live in some of the harshest habits such as extreme salty areas are called

1. 
   

   Methanogens
   

2. 
   

   Thermoacidophiles
   

3. 
   

   All of the above
   

4. 
   

   Halophiles
   

Q.

Are methanogens archaea?

Q. First photosynthetic organisms to appear on earth were

1. Bacteria
2. Cyanobacteria
3. Bryophytes
4. Green algae

Q. Which among the following category of bacteria is incorrect w.r.t. their shape?

1. Spherical: Coccus
2. Fibre shaped: Vibrium
3. Rod shaped: Bacillus
4. Spiral: Spirillum

Q.

Is methane produced from the dung of ruminating animals?

Q. Choose the odd one out.​

(ii) Malaria, Amoebic dysentery, Sleeping sickness, Filaria

Q.

What microbe causes food poisoning?

Q. Which statement is wrong with respect to the bacteria present in the gut of ruminants?

1. They are anaerobes.
2. They produce methane gas.
3. They are autotrophic.
4. They help in cellulose digestion.

Q.

How many types of prokaryotes are there?

Q. Which of the following are found in hot springs?

1. Halophiles
2. Methanogens
3. Thermoacidophiles
4. Cyanobacteria

Q.

State two economically important uses of:

(a) Heterotrophic bacteria

(b) Archaebacteria

Q. Group of bacteria used in biogas production is

1. Methanogens
2. Organotrophs
3. Eubacteria
4. Methanotrophs

Q. What are (i) methanogens (ii) Halophiles (iii) thermoacidophiles?

Q. Which of the following is a correct match for stop codons?

1. UAA – Opal
2. UGA – Ochre
3. UAG – Amber
4. All of these

Q.

Question 3

Organisms living in salty areas are called as

(a) methanogens (b) halophiles (c) heliophytes (d) thermoacidophiles

Q. _________ are the primary producers of the deep sea hydro-thermal ecosystem

1. Coral reefs
2. Green algae
3. Chemosynthetic bacteria
4. Blue-green algae

Q. Match the extremophiles to their habitats.

1. Ruminant guts
2. Hot springs
3. Arctics
4. Salty areas

Q. Which of the following pairs is correctly matched?

1. Coccus - rod shaped
2. Spirillum - spiral
3. Bacillus - comma shaped
4. Vibrio - spherical

Q. Which among the following is the habitat of methanogens?

1. Sulphur rocks
2. Marshy areas
3. Acidic environments
4. Hot springs

Q. PVC stands for

1. Planctomycetes, Verrucomicrobia, Clostridium
2. Pteridophyta, Verrucomicrobia, Clostridium
3. Planctomycetes, Verrucomicrobia, Chlamydiae
4. None of the above

Q. Methanogens produce lot of methane along with

1. oxygen and hydrogen
2. water and oxygen
3. carbon dioxide and hydrogen
4. carbon dioxide and water