2.1 Classification and Biodiversity

Question 1

What is the primary purpose of classification in biology?

Answer 1

To organize and categorize living organisms based on shared characteristics.

Question 2

True or False: The binomial naming system consists of two parts: the genus and species.

Answer 2

True

Question 3

Fill in the blank: The domain that includes organisms with prokaryotic cells is called __________.

Answer 3

Bacteria

Question 4

What are the three domains of life?

Answer 4

Bacteria, Archaea, and Eukarya.

Question 5

Which classification level comes after ‘family’?

Answer 5

Genus

Question 6

What is the significance of phylogenetic trees?

Answer 6

They illustrate the evolutionary relationships among species.

Question 7

True or False: All members of a species can interbreed and produce fertile offspring.

Answer 7

True

Question 8

Multiple Choice: Which of the following is NOT a kingdom in the domain Eukarya? A) Animalia B) Fungi C) Monera D) Plantae

Answer 8

C) Monera

Question 9

What is a clade?

Answer 9

A group of organisms that includes an ancestor and all its descendants.

Question 10

Fill in the blank: The classification system that uses hierarchical categories is known as __________.

Answer 10

Linnaean taxonomy

Question 11

What is the main difference between prokaryotic and eukaryotic cells?

Answer 11

Prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus.

Question 12

True or False: Genetic diversity is important for the survival of a species.

Answer 12

True

Question 13

What is biodiversity?

Answer 13

The variety of life in a particular habitat or ecosystem.

Question 14

Multiple Choice: Which term describes the number of different species in an ecosystem? A) Species richness B) Ecosystem diversity C) Genetic diversity D) Population density

Answer 14

A) Species richness

Question 15

What role do keystone species play in an ecosystem?

Answer 15

They have a disproportionately large impact on their environment relative to their abundance.

Question 16

Fill in the blank: The process by which new species arise is called __________.

Answer 16

Speciation

Question 17

True or False: Habitat destruction is a major threat to biodiversity.

Answer 17

True

Question 18

What is an endemic species?

Answer 18

A species that is native to and found only within a specific geographic area.

Question 19

Multiple Choice: Which of the following is a method used to measure biodiversity? A) Quadrat sampling B) Trophic levels C) Biogeography D) Photosynthesis rates

Answer 19

A) Quadrat sampling

Question 20

What is the term for the variety of genes within a species?

Answer 20

Genetic diversity

Question 21

True or False: Invasive species can negatively impact native biodiversity.

Answer 21

True

Question 22

What is the purpose of a species’ ecological niche?

Answer 22

It describes how a species interacts with its environment and fulfills its role within an ecosystem.

Question 23

Fill in the blank: The classification system that ranks organisms from broad to specific categories is called __________.

Answer 23

Taxonomic hierarchy

Question 24

What is the role of a taxonomist?

Answer 24

To classify and name organisms based on their characteristics and evolutionary relationships.

Question 25

Multiple Choice: Which of the following levels of classification is the most specific? A) Class B) Order C) Family D) Species

Answer 25

D) Species

Question 26

True or False: All organisms within a genus are closely related.

Answer 26

True

Question 27

What is a hybrid species?

Answer 27

A species that results from the interbreeding of two different species.

Question 28

Fill in the blank: The practice of conserving biodiversity is known as __________.

Answer 28

Conservation biology

Question 29

What does the term 'extinction' mean?

Answer 29

The permanent loss of a species from the Earth.

Question 30

Multiple Choice: Which of the following is a benefit of biodiversity? A) Increased ecosystem resilience B) Reduced genetic variation C) Higher rates of extinction D) Limited resource availability

Answer 30

A) Increased ecosystem resilience

Question 31

What is an example of a symbiotic relationship?

Answer 31

Mutualism, commensalism, and parasitism.

Question 32

True or False: Biodiversity is static and does not change over time.

Answer 32

False

Question 33

What is biogeography?

Answer 33

The study of the distribution of species and ecosystems in geographic space and through geological time.

Question 34

Fill in the blank: The interaction between organisms of different species in a community is known as __________.

Answer 34

Inter-specific competition

Question 35

What is the main factor that influences species diversity in an ecosystem?

Answer 35

Environmental conditions and resources available.

Question 36

Multiple Choice: Which of the following is a major cause of loss of biodiversity? A) Sustainable agriculture B) Climate change C) Pollution D) Both B and C

Answer 36

D) Both B and C