Biology · Science General

Diversity in Living Organisms

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The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Dense pelage is characteristic of animal inhabiting (heavy hairy body)

  1. Cold Climate

  2. Warm climate

  3. Tropical climate

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

The term pelage is used to refer to the body hair of an animal as a complete coat. Its principal function is thermoregulation, it maintains a layer of dry air next to the skin and repels water, thus providing thermal insulation.

Therefore, the correct answer is option A.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

When compared to the mammals, birds are less sensitive to temporary deprivation of water, because

  1. Urea excretion in mammals entails a greater loss of water than that in birds

  2. Absorption of Water horn the gut is more efficient in birds that in mammals

  3. The water requirement per unit weight is less in birds than in mammal

  4. None of these.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Birds and reptiles have uric acid as their nitrogenous waste. 

The uricotelic organism excretes uric acid in form of a white paste or powder.
this uric acid is advantaged over the urea which is excreted in mammals in certain ways because it is less toxic and reduces water loss and thus it also reduces the need for water for excretion.

So, the correct option is 'Urea excretion in mammals entails a greater lass of water than that M birds'

Multiple choice biology living world of animals causes of greenhouse effect global warming adaptation in animals

Many animals have physical adaptation of blending to the environments. This is known as

  1. Mimicry

  2. Behavioural

  3. Migration

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

  1. Mimicry is considered to be the copy of action or behavior of someone or something. It can be in the form of sound, smell, behavior etc.
  2. Behavioral adaptation is the one that organism adapts for the survival. It includes migration, hibernation etc.
  3. Migration is the process in which animal moves large distances in order to avoid seasonal stress. 
  4. Camouflage is a combination of material, colouration and illumination that helps organism either to hide or disguise itself. 
So, the correct option is 'Camouflage'.

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

Which of the following is not a moneran?

  1. Spirulina

  2. Nostoc

  3. Oscillatoria

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

Moneran are prokaryotic unicellular organisms. They lack membrane-bound organelles. They lack true nucleus. They have genetic material without nuclear envelope. The examples of Moneran include bacteria, blue green algae like Nostoc, Spirulina, Oscillatoria. Euglena is an eukaryotic organism

So, the correct answer is 'Euglena'

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

In Whittaker's classification, non-nucleated unicellular organisms$/$ prokaryotes are included under

  1. Plantae

  2. Monera

  3. Protista

  4. Animalia
Reveal answer Fill a bubble to check yourself
B 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 Archeobacteria. 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

These are the organisms which are called prokaryotes.

  1. Green algae, brown algae and red algae

  2. Yeasts and other fungi

  3. Mycoplasmas, bacteria, cyanobacteria

  4. None of the above groups
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Prokaryotes are all single-celled organisms eg, Mycoplasmas, bacteria, cyanobacteria. So, the correct option is C.(Mycoplasmas, bacteria, cyanobacteria)

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

Select correct statement w.r.t. Monera

  1. All unicellular and Gram negative

  2. Very simple in behaviour

  3. Show the most extensive metabolic diversity

  4. Show intercellular transport by cyclosis
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

Monera is divided into archaebacteria and eubacteria.

  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. 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'.

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

Bacteria were considered as plant because

  1. They have a cell wall.

  2. They multiply by fission.

  3. They can't move.

  4. They are present every where.
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

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

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.