Tag: biodiversity and need of classification

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

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

  1. $One$
  2. $Two$
  3. $Three$
  4. $Four$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
 All the members are not pathogenic
All the other statements are true for monera
Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

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

  1. Plantae

  2. Fungi

  3. Protista

  4. Monera
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 

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

Most extensive metabolic diversity is exhibited by

  1. kingdom monera

  2. kingdom plantae

  3. kingdom protista

  4. kingdom animalia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Monera (Monos – single) includes prokaryotes.Typically, they are one-cell organisms (but one group is mycelial). The naked circular DNA is the genetic material in these organisms. There is no nuclear envelope. The only subcellular organs in the cytoplasm are ribosomes and simple chromatophores.There are no sap vacuoles. Instead, there may be gas vacuole. The predominant nutritional mode is absorbent, but certain groups are photosynthetic (holophytic) and chemosynthetic. The organisms, by beating easy flagella or gliding, are non-motile or move.

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

According to five kingdom system, blue green algae belongs to

  1. Metaphyta

  2. Monera

  3. Protista

  4. Algae
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The kingdom monera is comprised of the prokaryotic organisms. The blue green algae is included under the kingdom monera. These are primitive form of prokaryotic organisms. They are unicellular or multicellular forming filamentous structures. They do not have well-developed cell organelles such as nuclear membrane, nucleus, mitochondria, etc. 

Thus, the correct answer is option B. 

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

Monera contains prokaryotic organism.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria. They contain prokaryotic organisms which are single-celled organisms with no true nuclear membrane.

So, the correct answer is 'True'.

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

Given below are statements made by four students about Monerans.

(i) All Monerans show multicellular body designs - Ashok
(ii) Monerans show either autotrophic or heterotrophic nutrition - Gita
(iii) All Monerans possess cell wall - Ramesh
(iv) Blue-green algae is an example of Monera - Amit 

Which of the student(s) has/have made an incorrect statement?

  1. Ashok and Ramesh

  2. Ashok only

  3. Gita and Ramesh

  4. Amit and Ashok
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The kingdom monera is comprised of the prokaryotic organisms. The kingdom is divided into groups, archaebacteria, cyanobacteria, and eubacteria. They are unicellular or multicellular forming filamentous structures. They can show autotrophic, chemotrophic as well as the heterotrophic mode of nutrition. They do not have well-developed cell organelles such as the nuclear membrane, cell wall, nucleus, mitochondria, etc. 

Thus, the correct answer is option A. 

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

Blue green algae belong to______________

  1. Plantae

  2. Fungi

  3. Monera

  4. Protista
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Blue-green algae is also called as Cyanobacteria, is a large group of prokaryotic organisms that resemble the eukaryotic algae in morphological and ecological characteristics, and were at one time treated as algae, hence the common name of blue-green algae. The prokaryotic nature of the blue-green algae has been the reason for these to be classified in the prokaryotic kingdom Monera.
Therefore, the correct answer is option C.
Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Cyanobacteria belong  to_____________

  1. Monera

  2. Bryophyta

  3. Protista

  4. Plantae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The kingdom Monera includes organisms that are single-celled known as bacteria. The microorganisms in the kingdom Monera are considered as the most ancient living forms on earth. The kingdom is divided into two groups Archaebacteria and Eubacteria. All the organisms of this kingdom are prokaryotes. These cells do not have a nuclear membrane, the chromosome is single and circular, they also lack membrane-bound cellular organelles. This kingdom includes bacteria, cyanobacteria, mycoplasma, etc. They are unicellular organisms and do not have a specific mode of nutrition. They can be either aerobic or anaerobic. These organisms have a cell wall that is made up of peptidoglycans. The cell organelles are not membrane-bound. 

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

Prokaryotic organisms make up the

  1. Archaebacteria, Eubacteria and Protists

  2. Archaebacteria and Protists

  3. Protists and Eubacteria

  4. Protists

  5. Eubacteria and Archaebacteria
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
  • Living organisms are firstly divided into prokaryotes and eukaryotes. Prokaryotes are organisms with poorly defined nuclear structure and are further divided into two groups i.e. eubacteria and archaebacteria.
  •  Eukaryotes are the organisms with a well-defined nucleus and include groups of a higher organism such as protists.

The correct answer is 'Eubacteria and Archaebacteria'.