Answer
414.9k+ views
Hint: The most ancient group of organisms on the earth is monera. This kingdom includes mycoplasma,bacteria, actinomycetes and cyanobacteria. Monera is the only prokaryotic kingdom .These organisms are single celled and have no true nucleus. Monerans are the most numerous of all living organisms on the earth.
Complete Answer:
>Option a is Rickettsiae which is a gram negative ,non spore forming and nonmotile bacteria. It is belongs to rickettsiaceae family.hence option a is wrong
>Option b is actinomycetes which are unicellular gram positive bacteria.Members of this group are found in different habitats across the world.They can produce different kinds of spores. So option b is also wrong.
>Option c is progenote. It was the last common ancestor of archaebacteria and eukaryotic.It is also called the last universal common ancestor. So option c is also wrong
>Option d is given to archaebacteria. They are the oldest living form on the earth.They belong to kingdom monera.So option d is correct.
Additional information:
Characters of archaebacteria
->Cell membrane of archaebacteria is made of lipids.
->The cell wall of archaebacteria is rigid which provides it shape and support.
->Its nutritional requirement is fulfilled by thick cytoplasm.
->They do not possess membrane bound organelles.
->Archaebacteria can live in a variety of environments so they are called extremophiles.
->They can withstand a very high pressure of more than 200 atmospheres.
Note:Archaebacteria able to do photosynthesis. They can reproduce asexually. They show a high level of horizontal gene transfer between lineage.They do not produce spores like other bacteria. They can live in extreme environments.
Complete Answer:
>Option a is Rickettsiae which is a gram negative ,non spore forming and nonmotile bacteria. It is belongs to rickettsiaceae family.hence option a is wrong
>Option b is actinomycetes which are unicellular gram positive bacteria.Members of this group are found in different habitats across the world.They can produce different kinds of spores. So option b is also wrong.
>Option c is progenote. It was the last common ancestor of archaebacteria and eukaryotic.It is also called the last universal common ancestor. So option c is also wrong
>Option d is given to archaebacteria. They are the oldest living form on the earth.They belong to kingdom monera.So option d is correct.
Additional information:
Characters of archaebacteria
->Cell membrane of archaebacteria is made of lipids.
->The cell wall of archaebacteria is rigid which provides it shape and support.
->Its nutritional requirement is fulfilled by thick cytoplasm.
->They do not possess membrane bound organelles.
->Archaebacteria can live in a variety of environments so they are called extremophiles.
->They can withstand a very high pressure of more than 200 atmospheres.
Note:Archaebacteria able to do photosynthesis. They can reproduce asexually. They show a high level of horizontal gene transfer between lineage.They do not produce spores like other bacteria. They can live in extreme environments.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)