B16.1 - B16.8 - Adaptions,independence And Competition✔️

Question 1

What is an ecosystem?

Answer 1

An ecosystem is the interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment

Question 2

Explain what independence is

Answer 2

Within a community each species depends on other species for food,shelter,pollination,seed dispersal etc - if one species is removed it can affect the whole community

Question 3

What is a stable community?

Answer 3

A community where all the species and enviromental factors are in balance so the population size remains fairly constant

Question 4

3 examples of abiotic (non-living) factors which affect a community?

Answer 4

-light intensity
-temperature
-soil pH and mineral content

Question 5

3 factors of biotic (living) factors which affect a community?

Answer 5

-availability for food
-new predators arriving
-new pathogens

Question 6

Define habitat?

Answer 6

The natural home or environment of an animal, plant, or other organism.

Question 7

Define population?

Answer 7

population is all the organisms of the same or closely-related species in an area.

Question 8

Define community?

Answer 8

All the different plants and animals found in a particular habitat interacting with each other in the same area

Question 9

What type of relationship is the predator-prey?

Answer 9

Cyclical relationship - when the population of prey increases (there is far more food) which cause an increase in predators - the number of prey decreases and eventually the number of predators decreases as all the prey (food) is gone - this gives the prey the chance to increase in number - cycle repeats

Question 10

3 examples of what animials compete for?

Answer 10

• food
• mate
• teritory

Question 11

3 exampls of what plants compete for?

Answer 11

• light
• space
• water and minreal ions from the soil

Question 12

Example of 4 abiotic factors (non-living) which affect a community?

Answer 12

• light intensity
• temperature
• soil pH and minreal content
• wind intensity for plants

Question 13

Example of 3 biotic factors (living) which affect a community?

Answer 13

• availability for food
• new predator arriving
• new pathogens

Question 14

What are adaptions?

Answer 14

Organisms have features that enable them to survive in the conditions in which they normally live - these adaptions may be structual , behavioural or functional

Question 15

What are extremophiles?

Answer 15

Organims living in enviorments that are very extreme where there might be high temperatures or pressure