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 biology cell and cellular organization comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Difference between eukaryotes and prokaryotes is in

  1. Circular ssDNA in prokaryotes

  2. Histone with prokaryotic DNA

  3. Operon in eukaryotes

  4. Membrane bound organelles in eukaryotes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

On the basis of the structure of cells, organisms are classified as eukaryote and prokaryote. The main differentiating factor between a eukaryote and prokaryote is that the cell organelles of eukaryotic cells are membrane-bound, while that of others are not.
Hence, the correct answer is D.

Multiple choice biology cell and cellular organization comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

The main difference between eukaryotes and prokaryotes is___________ 

  1. Eukaryotes have nucleus and prokaryotes have nucleoid.

  2. Eukaryotes have nucleoid and prokaryotes have nucleus.

  3. Eukaryotes have cell membrane, prokaryotes do not have cell membrane.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Prokaryotes do not possess membrane bound organelles and well defined nucleus. Nucleoid is a region in prokaryotic cell where its most of the genetic material resides. It is not a well-defined membrane bounded region. 
Eukaryotes possess well defined nucleus and membrane bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cell in which most of the genetic material is present. 
Therefore, the correct answer is option A.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Which of these best distinguishes a prokaryotic cell from a eukaryotic cell?

  1. Prokaryotic cells have a cell wall, but eukaryotic cells never do

  2. Prokaryotic cells have flagella, but eukaryotic cells do not

  3. Prokaryotic cells do not have a membrane-bounded nucleus, but eukaryotic cells do have such nucleus

  4. Prokaryotic cells have ribosomes but eukaryotic cells do not have ribosomes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The basic difference between eukaryotes and prokaryotes is the presence and absence of a nuclear membrane. The eukaryotic cells are considered true cells because they possess a nuclear membrane and prokaryotes are considered false cells as they lack it.

So, the correct answer is 'Prokaryotic cells do not have a membrane-bounded nucleus, but eukaryotic cells do have such nucleus'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Give one key difference between eukaryotic cell and prokaryotic cell.

  1. <font color="#222222">Eukaryotes cells have a membrane-bound nucleus and prokaryote cell lacks a membrane-bound nucleus. </font>

  2. Eukaryotes cells do not have a membrane-bound nucleus and prokaryote cell have a membrane-bound nucleus.

  3. Both eukaryotes and prokaryotes cell have membrane bound nucleus.

  4. Both eukaryotes and prokaryotes cell do not have membrane bound nucleus.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Eukaryotes are organisms whose cells have a nucleus enclosed within membranes. A prokaryote is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.

So, the correct answer is ' Eukaryotes cells have a membrane-bound nucleus and prokaryote cell lacks a membrane-bound nucleus'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Prokaryotes can be distinguished from eukaryotes as they lack

  1. RNA

  2. Ribosomes

  3. Gene discontinuity

  4. Unique DNA sequences
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Prokaryotic cells are the cells which lack organelles and other membrane-bound structure. They do not have a well-defined nucleus due to which gene discontinuity can be observed in the prokaryotic cell.
So the correct option is 'Gene discontinuity'.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Differentiate between prokaryotic and eukaryotic cells.

  1. Prokaryotic- have no membrane bound organelles, eukaryotic- have no membrane bound organelles

  2. Prokaryotic- have no membrane bound organelles, eukaryotic- have membrane bound organelles

  3. Prokaryotic- have nucleoid, eukaryotic- have nucleus

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

Prokaryotes do not possess membrane-bound organelles and well-defined nucleus. Nucleoid is a region in a prokaryotic cell, where most of the genetic material resides. It is not a well-defined membrane-bound region. 
Eukaryotes possess a well-defined nucleus and membrane-bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cells in which most of the genetic material is present. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Prokaryotic cells bear smaller nucleus as compared to eukaryotic cells.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Prokaryotic cells are primitive cells. They do not have well defined membrane bound nucleus. Nuclear material of a prokaryotic cell consists of a single chromosome which is in direct contact with cytoplasm. Here, the undefined nuclear region in the cytoplasm is called as nucleoid, i.e., there is no nuclear membrane. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

How is a prokaryotic cell different from a eukaryotic cell ?

  1. Prokaryotic cells- nucleoid, Eukaryotic cells- nucleus

  2. Prokaryotic cells- 70S type of ribosomes, Eukaryotic cells- 80S type of ribosomes

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Prokaryotes do not possess membrane-bound organelles and well-defined nucleus. Nucleoid is a region in prokaryotic cell where its most of the genetic material resides. It is not a well-defined membrane-bound region. Prokaryotic cells possess ribosomes of 70S type. 
Eukaryotes possess well-defined nucleus and membrane-bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cells in which most of the genetic material is present. Eukaryotic cells possess ribosomes of 80S type.
So, the correct answer is option C.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Bacteria differ from other plants in that, they do not have

  1. DNA

  2. RNA

  3. Cell wall

  4. A well defined nucleus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria and plant cells possess DNA, RNA and cell wall. Bacteria being a prokaryote, lacks membrane bounded nucleus. Their genetic material is present in undefined nuclear region in the cytoplasm is called as nucleoid. while plant is a eukaryote, which has organized nucleus with double wall nuclear membrane.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Choose the difference between prokaryotes and eukaryotes?

  1. Prokaryotes have RNA, eukaryotes have DNA.

  2. Prokaryotes have a nucleoid, eukaryotes have a nucleus.

  3. Prokaryotes have DNA, eukaryotes have RNA.

  4. Prokaryotes have a nucleus, eukaryotes have a nucleoid.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Prokaryotic cells are primitive cells. They do not possess many membrane bound organelles as mitochondria, lysosomes etc. They also do not have well defined membrane bound nucleus. Nuclear material of a prokaryotic cell consists of a single chromosome which is in direct contact with cytoplasm. Here, the undefined nuclear region in the cytoplasm is called as nucleoid, i.e., there is no nuclear membrane. 

Eukaryotes possess well defined nucleus and membrane bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cell in which most of the genetic material is present. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

All animals are eukaryotes and multi-cellular.

  1. True

  2. False

  3. Ambiguous

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

Organisms are divided into five kingdoms by R.H.Whittaker. According to this classification all the prokaryotes and unicellular organisms are grouped under kingdom Monera and some in kingdom Protista.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

The numbers of vacuoles are __________ in animals are compared to plants.

  1. More

  2. Less

  3. Same

  4. Can't define
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants don't have excretory system, thus possess larger vacuole to store their waste metabolites. Whereas animals have comparatively smaller vacuoles used for storage's of food materials. Thus the number of vacuoles in animal cell would be larger due to its size as compared to plants.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Bacteria differ from eukaryotes in absence of

  1. DNA

  2. Basic proteins

  3. Histones

  4. Both B and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Prokaryotic cells synthesize a set of small, usually basic proteins that bind DNA and are collectively called histone- like proteins because their biochemical properties resemble eukaryotic histones but histones are absent in Bacteria

So, the correct answer is 'Histones'

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Cell wall is absent in

  1. Mycoplasma

  2. Gametes

  3. Animal cells

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Cell wall is composed of cellulose and it is mostly prominent in plant cell. It provides structural frame work to the cell and provides strength and rigidity to the cell.
Mycoplasma lacks cell wall around its plasma membrane which makes it resistant towards common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis.
Gametes are the haploid cells which is lined by basal germinal epithelium.
Animal cell lacks the cell wall and starts with the plasma membrane.
So, the correct answer is option D.