Biology · Science General

Diversity in Living Organisms

3,323 Questions

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 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. 

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

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

What is the reason for the success of monerans?

  1. Eukaryotic nature and rigid cell wall

  2. Absence of nucleus and other membrane bound organelles

  3. Absence of vacuole and microscopic in nature

  4. Rapid rate of cell division and metabolic diversity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Monerans include a wide variety of bacteria. These can survive in extremely hot and salty concentrations, unlike other organisms. They can also divide very fast. They can produce millions of bacteria from one bacteria within minutes. So their rate of survival is very fast.

So, option D is the correct answer.

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

If organisms on the earth start dying, which group of organisms will be the last to die?

  1. Monera and Plantae

  2. Mycota and Monera

  3. Plantae and Protista

  4. Animalia and Mycota
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Monerans are organisms that can survive extreme conditions like heat and salt concentrations. As a result, they can survive even in hot water springs and volcanoes. They can also reproduce within minutes. So, they can also reproduce within minutes and produce hundreds of organisms like themselves. Mycota are fungi that survive in water bodies and mostly moist and shady locations. They too can survive if they receive moist and shady locations.

So, option B is the correct answer.

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

The domain is
I.   Eukaryota
II.  Archaebacteria
III. Eubacteria

  1. I only

  2. II only

  3. III ony

  4. I and III

  5. I, II, and III
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
  • Domain is the broadest taxonomic category and includes one or more kingdoms.
  • Three domains of life are namely Bacteria, Archaea and Eukarya. Domain bacteria include kingdom bacteria, domain Archaea corresponds to kingdom Archaea and domain Eukarya includes kingdoms Protista, Plantae, Fungi, and Animalia.
    So, the correct answer is 'I, II, and III'
Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

A unicellular prokaryote belongs to

  1. Animalia

  2. Eubacteria

  3. Fungi

  4. Plantae

  5. Protista
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Eubacteria, or "genuine" microbes, are single-celled prokaryotic microorganisms that have a scope of qualities and are found in different conditions all through all parts of the world. A wide range of microscopic organisms falls under this title, with the exception of archaebacteria. Since eubacteria are so normal, it contains one of the three areas of life; the three spaces are Archaea, Bacteria, and Eukarya.

Hence the correct option is B.

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

Which of the following groups belongs to the alternative eight-kingdom system of classification?

  1. Bacteria and Archaea

  2. Bacteria and Protista

  3. Archaea and Prostista

  4. Archaea and Euarchaea

  5. Euarchaea and Protista
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The eight kingdom system of classification was given by Tom cavalier smith. His classification completely reversed the Whittaker's five kingdom classification. The eight kingdoms in Cavalier Smith’s classification are Eubacteria, Archaebacteria, Archezoa, Protozoa, Chromista, Plantae, Fungi, and Animalia

The correct answer is A.

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

Name the category which includes unicellular prokaryotes.

  1. Animalia

  2. Eubacteria

  3. Fungi

  4. Plantae

  5. Protista
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Among the given options, Animalia, Fungi and Plantae clearly fall under the eukaryotic domain. Protista can be considered as a heterogeneous group of eukaryotes as they consist of a nucleus enveloped in a nuclear membrane. Eubacteria basically refers to the entire bacterial population which will consist of unicellular prokaryotes. 

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

Select  incorrect  pair _________________.

  1. Porifera-choanocytes

  2. Coelenterata-nematocysts

  3. Annelida - segmentation

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

Choanocytes or collar cells are the main cell types of kingdom Porifera. Coelenterata (Cnidaria) have nematocysts to catch the prey. Phylum Annelida contains ringworms or segmented worms. Monerans are unicellular prokaryotic organisms.

The correct answer is D. 

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

Prokaryotic algae are

  1. Phycomyceae

  2. Myxophyceae

  3. Cyanobacteria

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D 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 'Both B and C.'