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

Incipient nucleus occurs in

  1. Myxophyceae

  2. Chlorophyceae

  3. Phaeophyceae

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

Myxophyceae is the other name for blue green algae or Cyanobacteria. It is a prokaryotic unicellular organism. It lacks membrane bound organelles like mitochondria, golgi complex. It also lacks true nucleus. Incipient nucleus or nucleoid is present in it. Incipient nucleus is a genetic material without nuclear envelope.

Thus, the correct answer is 'Myxophyceae.'

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

Which of the following can be seen generally in all the prokaryotes?

  1. Contain DNA and RNA

  2. Are bacteria

  3. Demonstrate a circular strand of DNA without a covering of nuclear membrane

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Monerans are non-nucleated unicellular organisms. They are prokaryotes. They have a cell wall. They have no membrane-bound organelles such as mitochondria, Golgi complex. They lack a true nucleus. They have DNA and RNA as genetic material. They have nucleoid, a circular strand DNA without a covering of nuclear membrane. Examples include Bacteria, Blue-Green algae.
Thus, the correct answer is 'All of the above.'
Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

In which kingdom would you include archaea and nitrogen-fixing organisms in the five-kingdom classification?

  1. Plantae

  2. Fungi

  3. Protista

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

Whittaker's classification includes five kingdom classification system. The five kingdoms include Monera, Protista, Fungi, Plantae, and Animalia. Monera includes Eubacteria and Archaea. They include non-nucleated unicellular organisms. They are prokaryotes. They have a cell wall. They have no membrane-bound organelles and true nucleus.

Thus, the correct answer is 'Monera.'

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

Maximum nutritional diversity is found in

  1. Fungi

  2. Monera

  3. Plantae

  4. Animalia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The kingdom monera is comprised of two groups as archaebacteria and eubacteria. There is diverse range of organisms which are placed under this kingdom. There are prokaryotic bacteria which possess the heterotrophic mode of nutrition in which the digested food material is directly engulfed by the cell. The cyanobacteria are autotrophic and can prepare their food through photosynthesis. There are some chemotrophs which use the organic and inorganic compounds as the source of energy.
Thus, the correct answer is option B.

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

Assertion:  The bacteria and other prokaryotes show high adaptability to the changing environment.

Reason:  Member of kingdom Monera are efficient in regulating gene expression

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteria are highly adaptable due to their rapid reproduction and ability to regulate gene expression (operon models) in response to environmental changes, which allows them to survive in diverse conditions.

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

Organisms without nucleus and cell organelles belong to____________.

  1. Fungi

  2. Protista

  3. Algae

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

The kingdom of Monera is divided into two groups, Archaebacteria, and Eubacteria. The organisms in eubacteria are unicellular prokaryotes that do not have well-developed cell organelles such as the nucleus, mitochondria, chloroplast, etc. 

Thus, the correct answer is option D. 

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

The of life cycle of malarial parasite Plasmodium vivax, that occurs in female Anopheles is _______________.

  1. Sexual cycle

  2. Pre-erythrocytic schizogony

  3. Exoerythrocytic schizogony

  4. Post-erythrocytic schizogony
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

P. vivax is a causative agent of malaria. The life cycle of Plasmodium is characterized by an exogenous sexual phase (sporogony), in which multiplication occurs in female Anopheles mosquitos and an endogenous asexual phase (schizogony) which take place in the RBCs of the infected host. 

Thus, the correct answer is option A.

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

In five-kingdom classification system, the kingdom that includes the blue-green algae nitrogen-fixing bacteria and methanogenic archaebacteria is

  1. Plantae

  2. Fungi

  3. Protista

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

Monera includes - Archaebacteria and Eubacteria. 

Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions. eg -Methanogens.
Eubacteria are characterized by the presence of a rigid cell wall, and if motile, a flagellum. The cyanobacteria (blue-green algae) have chlorophyll a similar to green plants and are photosynthetic autotrophs. Heterotrophic bacteria are helpful in making curd from milk, production of antibiotic, fixing nitrogen in legume roots, etc.
So the correct option is "Monera".

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

Choose the correct answers from the alternatives given.
Among different kinds of water which of the following is free from bacteria?

  1. Deep well water

  2. Sea water

  3. Water of hot springs

  4. Rain water as it falls down
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

These bacteria in rainfall don't seem to cause any harm to humans though. 

So, the correct option is 'Rainwater as it falls down'.

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

Choose the correct answers from the alternatives given:
All monerans

  1. lack an endoplasmic reticulum

  2. contain DNA and RNA

  3. demonstrate a long circular strand of DNA not found enclosed in a nuclear membrane

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization such as bacteria. They are single-celled organisms with an absence of membrane-bound organelles. The nucleus and endoplasmic reticulum, as well as other organelles, are absent. 
  • Hence, the correct answer is 'All of the above'.