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

Peptidoglycan is characteristic constituent of cell wall in

  1. Archaebacteria and Eukaryotes

  2. Eubacteria and unicellular Eukaryotes

  3. Bacteria and Cyanobacteria

  4. Monera and Protista
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bacteria and cyanobacteria both are prokaryotic organisms. They share many similarities. They both lack true cell organelles. They both posses nucleoid instead of a true nucleus. Peptidoglycan is the characteristic constituent of a cell wall in both bacteria and cyanobacteria. They both posses saprophytic mode of life. They both are similar in cell division as well. 

Thus, the correct answer is 'Bacteria and Cyanobacteria.'

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

Kingdom monera includes

  1. Prokaryotes only

  2. Eukaryotes only

  3. Both A and B

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

Kingdom Monera includes prokaryotic organisms only. They are unicellular organisms. They are made up of single cell bound by plasma membrane and lack membrane-bound organelles like mitochondria, Golgi bodies. They lack a true nucleus as well. Instead, they possess genetic material without nuclear envelope called as the nucleoid. They also contain ribosomes in the cytoplasm. The example includes bacteria, Blue-green algae.

Thus, the correct answer is 'Prokaryotes only.'

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. Mycoplasma

  2. Slime moulds

  3. Archaebacteria

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

Monera is 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. Instead, they have nucleoid, genetic material without a nuclear membrane. Examples include Bacteria, Archaebacteria, Eubacteria, Mycoplasma, Blue-Green algae.

Thus, the correct answer is 'Slime Moulds.'

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

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 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.
Which one of the following is not true of organisms included in the kingdom Monera?

  1. They reproduce by mitosis

  2. They originated at least 3.5 billion years ago

  3. They have prokaryotic cellular organisation

  4. Most have cell walls
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Kingdom Monera is able to reproduce through the process of binary fission. It means that a cell replicates its DNA and then divides into two identical cells.

Hence, the correct answer is 'They reproduce by mitosis'.

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.
Which one of the following is not true of prokaryotes?

  1. They are living cells

  2. They lack a nucleus

  3. They all are parasitic

  4. They are both archaea and bacteria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Prokaryotes are single-celled organisms of Bacteria and Archaea. All prokaryotes lack membrane-bound organelles.

So, the correct option is 'They all are parasitic'.

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

Cyanobacteria are classified under _____________.

  1. Protista

  2. Plantae

  3. Monera

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

Cyanobacteria are classified under Kingdom Monera as they are prokaryotes. They are generally photosynthetic in nature and contains pigments, chlorophyll a, carotenoids, etc. Nostoc and Oscillataria are examples of this category.

So the correct option is C.

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

In which kingdom, would you classify the archaea and nitrogen-fixing organisms, if the five-kingdom system of classification is used?

  1. Plantae

  2. Fungi

  3. Protista

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

The five kingdom classification system is comprised of Monera, Protista, Fungi, Plantae and Animalia. The kingdom Monera is divided into the Archaebacteria and the Eubacteria. The Archaebacteria group includes all the archae which are primitive prokaryotes. The Eubacteria group includes the nitrogen-fixing bacterium. So, these organisms are placed in the group of monera.

Thus, the correct answer is option D. 

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

Which unicellular organism of the following does not possess the organised nucleus?

  1. Bacteria

  2. Amoeba

  3. Chlamydomonas

  4. None of these
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 two groups, archaebacteria and eubacteria. They are unicellular or multicellular forming filamentous structures. They do not have well-developed cell organelles such as the nuclear membrane, cell wall, nucleus, mitochondria, etc. Bacteria is a prokaryote while Amoeba and Chlamydomonas are eukaryotes. 

Thus, the correct answer is option A. 

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

Bacteria are included in which of the following kingdoms?

  1. Protista

  2. Plantae

  3. Monera

  4. Animalia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Whittaker has divided the living world into different kingdoms. According to him, all living organisms are classified into 5 different kingdoms. Out of these 5, all microscopic minute bacteria are included in the kingdom monera. They constitute unicellular prokaryotic organisms.

So, option C "Monera" is the correct answer.