Envi Scie (5)

Question 1

• Simply refers to all varieties of life forms.

Answer 1

Biodiversity

Question 2

Major components of Biodiversity

Answer 2

Functional Diversity,
Species Diversity
Ecological Diversity
Genetic Diversity

Question 3

• the number and abundance of species present in different communities

Answer 3

Species

Question 4

• the variety of terrestrial and aquatic ecosystems found in an area or on the Earth.

Answer 4

Ecological Diversity

Question 5

Values of Biodiversity

Answer 5

Direct Values, Indirect Values

Question 5

• the variety of genetic material within a species or a population

Answer 5

Genetic

Question 6

recycling needed for the survival of species, communities and ecosystem.

Answer 6

Functional Diversity

Question 7

• directly use biodiversity for our benefit

Answer 7

Direct Values

Question 8

• we don’t physically use a plant or animal, but by virtue of its existence it provides services that keep the ecosystem healthy

Answer 8

Indirect Values

Question 9

Under direct values

Answer 9

Consumptive and productive

Question 10

• Biodiversity is an essential requirement for the maintenance of global food supply. The main sources of human food include animals, fish and plant produces.

Answer 10

Consumptive

Question 11

• product is marketed and sold. The animal products like tusks of elephants; musk from deer; silk from silkworm; wool from sheep or goats; fur of many animals etc all of which are traded in the market.

Answer 11

Productive Value

Question 12

Under indirect value

Answer 12

Social, Ethical, aesthetic

Question 13

Threats to biodi

Answer 13

Habitat destruction

Question 14

Habitat destruction

Answer 14

• played a key role in extinctions, especially related to tropical forest destruction
• overpopulation, deforestation, pollution and global warming or climate change

Question 15

Poaching

Answer 15

• Illegal trade of wildlife products by killing prohibited endangered animals

Question 16

• Causes of man-animal conflicts
• Invasive non-native species
• Pollution/litter
• Land use change/increased infrastructure development
• Intensive Farming Practices
• Climate change

Answer 16

Man wildlfe conflicts

Question 17

• preservation of species in its natural ecosystem

Answer 17

In-situ

Question 18

• conservation of elements of biodiversity out of the context of their natural habitat

Answer 18

Ex-situ conservation

Question 19

• changes over time through changes in the genes of populations in succeeding generations.
• Mutations and changes in the genetic make up of populations lead to biological evolution by natural selection

Answer 19

Biological evolution

Question 20

• individuals with certain traits are more likely to survive and reproduce

Answer 20

Natural Selection

Question 21

• process where one species splits into two or more different species

Answer 21

Speciation

Question 22

Two types of isolations

Answer 22

Reproductive Isolation (Sympatric Speciation)
Geographic Isolation (Allopatric Speciation)

Question 23

Species Interaction

Answer 23

Mutualism, predation, parasitism, comensalism competetion, photocooperation, Amensalism

Question 24

• It is the role and position of specie in environment.
• any specie include all the attribute to animal lifestyle

Answer 24

Ecological Niche

Question 25

Types of Ecological Niche

Answer 25

Fundamental Niche (whole)
Realized Niche (specific)

Question 26

there are no limiting factors on the environment and resources the organism can use

Answer 26

Fundamental Niche (whole)

Question 27

niche that is occupied by a viable population of a specie in the presence of competitor specie
- Post –competitive specie

Answer 27

Realized Niche