Biology As

Question 1

What is the binomial system of naming organisms?

Answer 1

A two-part Latin name consisting of the genus (capitalized) and species (lowercase)

Example: Homo sapiens

Question 2

What are the two parts of the binomial name?

Answer 2

Genus and species

Question 3

Why is the binomial naming system important?

Answer 3

Ensures scientists across different languages and regions can identify species consistently

Question 4

What does a species name often reflect?

Answer 4

Characteristics of the organism

Question 5

What is the hierarchical classification of organisms?

Answer 5

Organisms are categorized into levels: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species

Question 6

What happens at each successive level of classification?

Answer 6

Groups organisms based on shared characteristics, becoming more specific

Question 7

What is the purpose of the hierarchical system in biology?

Answer 7

Helps scientists organize and understand evolutionary relationships

Question 8

True or False: The binomial system allows for identifying organisms in various languages.

Answer 8

True

Question 9

Fill in the blank: The binomial naming system consists of the _______ and species.

Answer 9

Genus

Question 10

What are homologous traits?

Answer 10

Homologous traits are characteristics that come from a common ancestor, which may not always look the same but are structurally similar and share an evolutionary origin.

Question 11

What do evolutionary relationships reflect?

Answer 11

Evolutionary relationships reflect the evolutionary history of species, grouping them according to their common ancestry.

Question 12

What is the significance of closely related species?

Answer 12

Closely related species share more recent common ancestors and are placed in the same group.

Question 13

How does natural classification differ from artificial classification?

Answer 13

Natural classification organizes species in a way that mirrors the actual evolutionary tree of life, helping scientists understand how species are related through time.

Question 14

What is the biological species concept?

Answer 14

The biological species concept defines species as groups of interbreeding natural populations that are reproductively isolated from other such groups.

Question 15

What does reproductive isolation mean?

Answer 15

Reproductive isolation means that members of different species cannot produce fertile offspring.

Question 16

What is the concept of a niche?

Answer 16

A niche refers to the role or function of an organism within an ecosystem, including how it obtains its food, where it lives, and how it interacts with other organisms in the environment.

Question 17

How are species distinguished by ecological niches?

Answer 17

Species that occupy different ecological niches and adapt to different environmental conditions are considered distinct species, even if they can potentially interbreed.

Question 18

What are morphological traits?

Answer 18

Morphological traits are physical characteristics, like size and structure, that are useful for identifying species, especially in classification.

Question 19

What defines behavioral traits in species?

Answer 19

Species are defined by unique behaviors, especially mating rituals, which act as barriers to interbreeding.

Question 20

Define an ecosystem.

Answer 20

An ecosystem is a community of living organisms interacting with their physical environment in a specific area, forming a complex web of relationships.

Question 21

What is biodiversity?

Answer 21

Biodiversity can be assessed at different levels, including the number of species and their relative abundance.

Question 22

How does biodiversity vary in different ecosystems?

Answer 22

This level of biodiversity looks at the variety among different species in a given area and how evenly they are distributed.

Question 23

Give an example of biodiversity in different ecosystems.

Answer 23

A rainforest might house 100 different species of trees, while a grassland might house only 20. The rainforest is richer in species.

Example: A rainforest has 100 different species of trees, while a grassland has only 20.

Question 24

What does Genebre Diversity refer to?

Answer 24

Differences in ANA among individuals of the same species.

Question 25

How does genetic variation affect populations?

Answer 25

It makes populations more adaptable to environmental changes, diseases, and climate shifts.

Question 26

What is an example of low genetic variation?

Answer 26

Hechs have very low genetic variation, making them more vulnerable to diseases and environmental changes.

Question 27

What is an example of high genetic variation?

Answer 27

Days have high genetic variation due to selective breeding.

Question 28

What is bioaccumulation?

Answer 28

Bioaccumulation is the process where harmful chemicals build up inside the body of an organism over time and cannot be easily broken down or removed.

Question 29

What is biomagnification?

Answer 29

Biomagnification occurs when pesticides become more concentrated in the bodies of secondary consumers as they move up the food chain.

Question 30

What are the effects of harmful chemicals in the environment?

Answer 30

Harmful chemicals can cause serious harm to various organisms, especially humans, when they seep into the soil and mix with surrounding water.

Question 31

How do toxins accumulate in the food chain?

Answer 31

Toxins accumulate in one organism over time, and as bigger animals eat smaller organisms, the toxins increase as they move up the food chain.

Question 32

What is a line transes?

Answer 32

A line transes refers to a string that runs along a grand in a straight manner.

Question 33

What does conservation refer to?

Answer 33

Conservation is the reason for the need to maintain balance.

Question 34

What do natural ingredients provide?

Answer 34

Natural ingredients are used to treat diseases.

Question 35

What activities are included in recreation?

Answer 35

Recreation includes activities such as bird watching, fishing, and hiking.

Question 36

What is biodiversity?

Answer 36

Biodiversity helps alter and establish recent activities.

Question 37

What is the significance of marine environments?

Answer 37

Marine environments are crucial for sustaining various life forms.

Question 38

What is the purpose of protecting endangered and vulnerable species?

Answer 38

To prevent extinction and preserve biodiversity.

Question 39

What is captive breeding?

Answer 39

A conservation method where a small group of organisms breed in controlled environments to avoid extinction.

Question 40

What are reintroduction programmes?

Answer 40

Programs that return organisms to their original natural habitat after captive breeding.

Question 41

What is conservation education?

Answer 41

Teaching people about different species and raising awareness about extinction.

Question 42

What role does research play in conservation?

Answer 42

Research helps to understand species and ecosystems, informing conservation strategies.

Question 43

What is Marine Plutourism?

Answer 43

Marine Plutourism refers to the tourism activities related to marine environments and species.

Question 44

Why is it necessary to limit the population of certain species?

Answer 44

Limiting the population is necessary to reduce pressure from culling or contraception.

Question 45

What is one consequence of overpopulation in a species?

Answer 45

Overpopulation can lead to depletion of food sources, resulting in starvation and ecosystem imbalance.

Question 46

How can a large population affect competition among species?

Answer 46

A large population can outcompete other species for resources like food and water, potentially driving them to extinction.

Question 47

What is a potential impact of superpopulation on predator-prey relationships?

Answer 47

Superpopulation can disrupt predator-prey relationships and harm biodiversity, affecting the entire ecosystem.

Question 48

What are alien (invasive) species?

Answer 48

Alien species are organisms introduced to an environment where they are not naturally found.

Question 49

What is the impact of alien species on native ecosystems?

Answer 49

They often outcompete native species, disrupt ecosystems, and cause economic or environmental damage.

Question 50

How can alien species spread disease?

Answer 50

Alien species can introduce new diseases that harm native species and humans.

Question 51

What is an example of an alien species affecting native species?

Answer 51

The cane toad in Australia preys on native insects and small animals, reducing their populations. ## Footnote Cane toads carry parasites and pathogens that can infect native amphibians.

Question 52

How do invasive species disrupt food chains?

Answer 52

Invasive species can disrupt food chains and population balance, as seen with cane toads that secrete toxins affecting predators like snakes.