biology MCQs

1

The variety of organisms in a particular area is known as what?

A

Classification

B

Taxonomy

C

Biodiversity

D

Ecology

2

Approximately how many kinds of organisms have biologists discovered and classified?

A

1 million

B

2 million

C

5 million

D

10 million

3

What factor does the biodiversity of a place NOT depend on?

A

Climate

B

Altitude

C

Soil type

D

Longitude

4

Which regions generally have more biodiversity?

A

Polar regions

B

Temperate regions

C

Tropical regions

D

Desert regions

5

What is the main purpose of classification?

A

To name organisms

B

To divide organisms into groups based on similarities and differences

C

To study the habitat of organisms

D

To count the number of organisms

6

Which of the following is an aim of classification?

A

To determine the size of organisms

B

To find the evolutionary relationships among organisms

C

To observe the behavior of organisms

D

To record the sounds of organisms

7

The groups into which organisms are classified are known as what?

A

Who devised the Linnaean system of taxonomic ranks in 1735?

A

Robert Whittaker

B

Carl Woese

C

Carl Linnaeus

D

Aristotle

9

Which taxonomic rank was added to the Linnaean system in 1977?

A

Domain

B

Kingdom

C

Class

D

Family

10

What is the highest taxonomic rank?

A

Kingdom

B

Phylum

C

Domain

D

Class

11

Organisms are broadly classified into how many domains?

A

Two

B

Three

C

Four

D

Five

12

The domain Eukarya is divided into how many kingdoms?

A

Two

B

Three

C

Four

D

Five

13

In the classification of plants and fungi, what term is used instead of Phylum?

A

Order

B

Division

C

Class

D

Section

14

What is the lowest and most basic level of classification?

A

Genus

B

Family

C

Order

D

Species

15

Who was the first person to classify organisms into two groups, plants and animals?

A

Carl Linnaeus

B

Aristotle

C

Al-Jahiz

D

Andrea Caesalpinia

16

Which scholar described the characteristics of 350 species of animals and wrote about the life of ants?

A

Ibn Rushd

B

Tournefort

C

Abu Usman Umer Al-Jahiz

D

Aristotle

17

In the two-kingdom classification system, organisms that can prepare their own food are placed in which kingdom?

A

Animalia

B

Protista

C

Fungi

D

Plantae

18

Which organism presented a problem for the two-kingdom system due to having both plant-like and animal-like characteristics?

A

Amoeba

B

Yeast

C

Euglena

D

Bacteria

19

Who proposed the third kingdom, Protista, in 1866?

A

Robert Whittaker

B

Carl Woese

C

E-Chatton

D

Ernst Haeckel

20

In the three-kingdom system, where were fungi placed?

A

Protista

B

Animalia

C

Plantae

D

Monera

21

What is the key difference between fungi and plants?

A

Fungi are autotrophs

B

Fungi have cellulose in their cell walls

C

Fungi are heterotrophs that absorb food

D

Fungi lack a cell wall

22

The five-kingdom classification system was introduced by whom in 1969?

A

Carl Linnaeus

B

Robert Whittaker

C

Margulis and Schwartz

D

Carl Woese

23

The five-kingdom system is based on cellular organization and what other factor?

A

Habitat

B

Modes of nutrition

C

Size

D

Color

24

Which kingdom was introduced in the five-kingdom system to accommodate prokaryotes?

A

Protista

B

Fungi

C

Monera

D

Archaea

25

The three-domain system, introduced by Carl Woese, divides prokaryotes into which two domains?

A

Bacteria and Eukarya

B

Archaea and Protista

C

Archaea and Bacteria

D

Monera and Bacteria

26

The cell wall of organisms in Domain Archaea is made of what?

A

Peptidoglycan

B

Cellulose

C

Chitin

D

Polypeptides and proteins

27

Which organisms are known to live in extreme environments like hot springs and salt lakes?

A

Bacteria

B

Archaea

C

Eukarya

D

Protista

28

The cell wall of bacteria is made of what substance?

A

Chitin

B

Cellulose

C

Peptidoglycan

D

Lipids

29

Which domain includes all unicellular and multicellular eukaryotes?

A

Archaea

B

Bacteria

C

Eukarya

D

Monera

30

Kingdom Protista includes organisms that are unicellular, colonial, or simple multicellular. What does 'simple multicellular' mean?

A

They have complex organs

B

They do not have multicellular sex organs

C

They are all parasites

D

They form large colonies

31

Plant-like protists are commonly called what?

A

Protozoans

B

Molds

C

Algae

D

Fungi

32

The cell walls of fungus-like protists are made of what?

A

Chitin

B

Peptidoglycan

C

Cellulose

D

Keratin

33

How do fungi obtain nutrients?

A

Ingestion

B

Photosynthesis

C

Chemosynthesis

D

Absorption from decaying matter

34

The cell wall of fungi is made of what polysaccharide?

A

Cellulose

B

Glycogen

C

Starch

D

Chitin

35

Which of the following is a unicellular fungus?

A

Mushroom

B

Mold

C

Yeast

D

Smut

36

What are the cell walls of plants made of?

A

Chitin

B

Peptidoglycan

C

Cellulose

D

Lipids

37

Viruses are not included in the classification system because they are what?

A

Multicellular

B

Prokaryotic

C

Acellular

D

Eukaryotic

38

A virus consists of a protein coat surrounding what?

A

A nucleus

B

Cytoplasm

C

Nucleic acid (DNA or RNA)

D

Ribosomes

39

Particles composed only of protein that can cause infectious diseases are called what?

A

Viruses

B

Viroids

C

Bacteria

D

Prions

40

Particles composed of circular RNA that cause diseases in plants are called what?

A

Prions

B

Viruses

C

Viroids

D

Bacteriophages

41

The system of giving a two-part scientific name to an organism is called what?

A

Taxonomy

B

Classification

C

Binomial nomenclature

D

Genus naming

42

In binomial nomenclature, what does the first part of the scientific name represent?

A

Species

B

Genus

C

Family

D

Kingdom

43

What does the second part of the scientific name, 'sapiens' in Homo sapiens, represent?

A

Genus

B

Family

C

Species

D

Order

44

Scientific names are taken from which language to avoid favoritism?

A

English

B

Greek

C

Latin

D

Sanskrit

45

How should a scientific name be written when typed?

A

In bold

B

Underlined

C

In italics

D

In all caps

46

When a scientific name is handwritten, what is the rule?

A

It must be in cursive

B

It must be in capital letters

C

The two parts should be separately underlined

D

It should be circled

47

The common name 'black bird' being used for both crow and raven illustrates a problem with common names. What is it?

A

They are too scientific

B

They are hard to remember

C

One name can refer to multiple organisms

D

They are too long

48

The example of 'silver fish' not being a true fish demonstrates what about common names?

A

They have no scientific basis

B

They are always accurate

C

They are based on evolutionary history

D

They are the same in all languages

49

What is the scientific name for humans?

A

*Panthera tigris*

B

*Pisum sativum*

C

*Homo sapiens*

D

*Drosophila melanogaster*

50

Which of the following kingdoms belongs to the Domain Eukarya?

A

Archaebacteria

B

Eubacteria

C

Monera

D

Fungi

The variety of organisms in a particular area is known as what?

Approximately how many kinds of organisms have biologists discovered and classified?

What factor does the biodiversity of a place NOT depend on?

Which regions generally have more biodiversity?

What is the main purpose of classification?

Which of the following is an aim of classification?

The groups into which organisms are classified are known as what?

Who devised the Linnaean system of taxonomic ranks in 1735?

Which taxonomic rank was added to the Linnaean system in 1977?

What is the highest taxonomic rank?

Organisms are broadly classified into how many domains?

The domain Eukarya is divided into how many kingdoms?

In the classification of plants and fungi, what term is used instead of Phylum?

What is the lowest and most basic level of classification?

Who was the first person to classify organisms into two groups, plants and animals?

Which scholar described the characteristics of 350 species of animals and wrote about the life of ants?

In the two-kingdom classification system, organisms that can prepare their own food are placed in which kingdom?

Which organism presented a problem for the two-kingdom system due to having both plant-like and animal-like characteristics?

Who proposed the third kingdom, Protista, in 1866?

In the three-kingdom system, where were fungi placed?

What is the key difference between fungi and plants?

The five-kingdom classification system was introduced by whom in 1969?

The five-kingdom system is based on cellular organization and what other factor?

Which kingdom was introduced in the five-kingdom system to accommodate prokaryotes?

The three-domain system, introduced by Carl Woese, divides prokaryotes into which two domains?

The cell wall of organisms in Domain Archaea is made of what?

Which organisms are known to live in extreme environments like hot springs and salt lakes?

The cell wall of bacteria is made of what substance?

Which domain includes all unicellular and multicellular eukaryotes?

Kingdom Protista includes organisms that are unicellular, colonial, or simple multicellular. What does 'simple multicellular' mean?

Plant-like protists are commonly called what?

The cell walls of fungus-like protists are made of what?

How do fungi obtain nutrients?

The cell wall of fungi is made of what polysaccharide?

Which of the following is a unicellular fungus?

What are the cell walls of plants made of?

Viruses are not included in the classification system because they are what?

A virus consists of a protein coat surrounding what?

Particles composed only of protein that can cause infectious diseases are called what?

Particles composed of circular RNA that cause diseases in plants are called what?

The system of giving a two-part scientific name to an organism is called what?

In binomial nomenclature, what does the first part of the scientific name represent?

What does the second part of the scientific name, 'sapiens' in *Homo sapiens*, represent?

Scientific names are taken from which language to avoid favoritism?

How should a scientific name be written when typed?

When a scientific name is handwritten, what is the rule?

The common name 'black bird' being used for both crow and raven illustrates a problem with common names. What is it?

The example of 'silver fish' not being a true fish demonstrates what about common names?

What is the scientific name for humans?

Which of the following kingdoms belongs to the Domain Eukarya?

What does the second part of the scientific name, 'sapiens' in Homo sapiens, represent?