Population and sustainable ecosystems

Question 1

Exponential growth

Answer 1

Accelerated growth that produces
A j shaped curve when the population is graphed against time

Question 2

Restoration ecology

Answer 2

Relates to the renewal of degraded or destroy ecosystem’s/habits e.g: don valley bricks works

Question 3

Bio control

Answer 3

Involve the use of a species to control the population of undesired species e.g: a parasitoid fly was introduced to regulate European gypsy moth population

Question 4

Equilibrium

Answer 4

When the population is at its carry capacity it produces an s shaped curve

Question 5

Alien species

Answer 5

Alien species are species that have either eccidentally or intentionally moved into a new location e.g: many raccoons

Question 6

Deforestation

Answer 6

Results from the practice of clearing forest for logging or other human uses and never replanting them

Question 7

Succession

Answer 7

Series of change in an ecosystem that occurs over time,following a disturbance

Question 8

Ecosystem engineer

Answer 8

E.g: where beavers nature ecosystem engineers felling trees and building dams and changing water ways for their benefit but also helps other species including humans

Question 9

Invasive species

Answer 9

That take over a habitats of native species or invade their bodies eg: the Round goby competes with native fish for spawning areas. And eats their eggs

Question 10

Over exploration

Answer 10

Is the use of extraction of a resource until it is depleted

Question 11

Ecological niches

Answer 11

Is that way
Organisms occurring a position in an ecosystem including all abiotic and biotic things e.g: carnivorous plant exists in ecosystem with poor nutrient soil. these plants have adaptations for getting their nutrients from insects

Question 12

Closed population

Answer 12

When a population exists within a fixed area the population will be bell shaped or u-shaped

Question 13

Bog

Answer 13

Wetland in which water is acidic and low in nutrients e.g: Nitrogen carnivorous plants

Question 14

Competition

Answer 14

Two or more species that complete for the same resources e.g the dandelion compete with grass for access to water and nutrients in the soil

Question 15

Mutualism

Answer 15

A symbiotic relationship between two species in which both species benefit from the relationship

Question 16

Parasitism

Answer 16

Relationship between the parasite and the host it not always harmful e.g: brainworm parasite is able complete it’s life inside a white tailed deer.

Question 17

Commensalism

Answer 17

Relationship where one organism benefit the other is neither harmed or helped e.g:bird living in a tree

Question 18

Niche

Answer 18

Is to find their niche in a highly competitive ecosystem,species that share a hunting territory must adapt in some unique way e.g: the red tailed hawk and screech owl some Of the same food but they are not in competition because they have different ecological niches

Question 19

Stewardship

Answer 19

Is the active assumption of responsibility for welfare of the environment e.g: for both reasons ethical- to protect the biosphere for future generations and at risk species practical-if to much damage is done to earth ecosystem,they will use their ability to sustain the species that rely on them including humans

Question 20

Exotic species

Answer 20

They come from other countries or regions when they are moved on purpose or accident

Question 21

Chemical control

Answer 21

E.g:Poison was used to control rat that were harming local birds populations off the coast of bc

Question 22

Symbiosis

Answer 22

-interaction between two species that live in close association

Question 23

Biotic niche- is a predator for insects to eat but a Prey for nighthawk

Answer 23

Abiotic niche-