Tag: monera

Questions Related to monera

What is the shape of Bacillus thuringiensis bacteria?

biology classification of plants monera five kingdoms of living organisms biodiversity and need of classification

  1. Rod shaped

  2. Comma shaped

  3. Spiral shaped

  4. None of these

Show answer
Correct Option: A
Explanation:

Bacillus thuringiensis, by the name 'bacillus', suggests that these are rod-shaped bacteria as bacillus is the term used for rod-shaped bacteria. So, the correct option is 'Rod-shaped'.

How many of the following are prokaryotes?
Yeast, Nitrosomonas, Amoeba, paramoecium, Archaebacteria, Mycoplasma, Nostoc, Gonyaulax

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. 7

  2. 4

  3. 5

  4. 6

Show answer
Correct Option: B
Explanation:

Nitrosomonas, Archaebacteria, Mycocoplasma and Nostoc are prokaryotes.

So the correct answer is '4' 

Which kingdon included nutritioally most diversed group of organisms and has no well defined boundaries?

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. Monera

  2. Protist

  3. Fungi

  4. Plantae

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Correct Option: A

Select correct statement w.r.t. Monera

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. All unicellular and Gram negative

  2. Very simple in behaviour

  3. Show the most extensive metabolic diversity

  4. Show intercellular transport by cyclosis

Show answer
Correct Option: C
Explanation:

The kingdom Monera includes all prokaryotes, which may be gram positive or gram negative bacteria. They have a simple structure but are complex in behaviour. Intercellular transport by cyclosis is seen only in eukaryotes and hence is not found in monera. They have an extensive metabolic diversity and their mode of nutrition may be heterotrophic or autotrophic. 

So, the correct option is 'Show the most extensive metabolic diversity'.

Starting with a bacterium that divides once in half hour, how many bacteria are formed after $24$ hours of growth?

biology classification of plants monera five kingdoms of living organisms biodiversity and need of classification

  1. $2^{12}$

  2. $2^{24}$

  3. $2^{48}$

  4. $2^{47}$

Show answer
Correct Option: C
Explanation:

Since the bacteria divides once in half hour. In one hour number of times it will divide = 2

So, in 24 hours number of times the bacteria will divide = 2*24= 48 times
So, number of bacteria formed after 24 hours = 2$^4$$^8$ 
So, the correct answer is '2$^4$$^8$'.

Which of the following is correct?

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. Bacteria are only autotrophic.

  2. Bacteria are only heterotrophic.

  3. Most bacteria are heterotrophic but few are autotrophic.

  4. Most bacteria are autotrophic but few are heterotrophic.

Show answer
Correct Option: C
Explanation:

The bacteria are the prokaryotic organisms which are generally heterotrophic. These bacteria feed on the dead and digested matter. There are certain species of bacterium which is inclusive of the cyanobacteria. These are the blue-green algae which can perform photosynthesis due to the presence of the chlorophyll pigments. The other bacterial species can perform chemosynthesis and can utilise the organic and inorganic compounds as the source of energy. 

Thus, the correct answer is option C. 

Monera is divided into archaebacteria and eubacteria.

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. True

  2. False

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Correct Option: A
Explanation:

  • Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria. Until recently, all bacteria were grouped together in one kingdom (five-kingdom system). 
  • The five-kingdom system is divided into animals, plants, fungi, protists, and monera. The Monera kingdom is made up of two phyla, or groups. They are archaebacteria and eubacteria.
So, the correct answer is 'True'.

Bacteria were considered as plant because

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. They have a cell wall.

  2. They multiply by fission.

  3. They can't move.

  4. They are present every where.

Show answer
Correct Option: A
Explanation:

The plant cell possesses a cell wall which is composed of cellulose, pectin and lignin. The cell wall provides mechanical strength and protection to the internal cellular organelles. The bacterial cell also possesses a cell wall which is made up of peptidoglycan. Due to the presence of the cell wall, the bacteria were also considered similar to the plant cell. 

Thus, the correct answer is option A. 

How many of the following statements are not true for kingdom Monera?
(i) Most of the members are prokaryotic.
(ii) Some of the monerari can perform photosynthesis
(iii) All the members have celll wall of peptidoglyean
(iv) All the members of monera are devoid of true nucleus.
(v) All the members are pathogenic

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. $One$

  2. $Two$

  3. $Three$

  4. $Four$

Show answer
Correct Option: A
Explanation:
 All the members are not pathogenic
All the other statements are true for monera

According to Whittaker, one of the following is most primitive evolutionary group

biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

  1. Plantae

  2. Fungi

  3. Protista

  4. Monera

Show answer
Correct Option: D
Explanation:

R. H. Whittaker proposed the five kingdom classification in which the Monera group is considered as the most primitive group. The kingdom Monera includes organisms such as the archaebacteria, bacteria, cyanobacteria (BGA), and filamentous actinomycetes. These organisms are unicellular or multicellular prokaryotes. There are different forms of primitive organisms which show that the evolution occurred in these organisms much before compared to the organisms of the other group. 

Thus, the correct answer is option D.