B15- Ecology

Question 1

Species def

Answer 1

Animals that are the same species that can breed together to produce infertile offspring

Question 2

Habitat def

Answer 2

The place where an organism lives

Question 3

Community def

Answer 3

A collection of plants and animals that share a habitat

Question 4

Population def

Answer 4

The number of organisms of a certain species living in a habitat

Question 5

Competition def

Answer 5

A situation whre different organisms require the same resources

Question 6

Interdependence def

Answer 6

A word that describes how organisms rely on each other

Question 7

Abiotic meaning

Answer 7

Physical rather than biological

Question 8

Abiotic factors affecting communities

Light intensity

Answer 8

Light intensity affects communities as it limits photosynthesis. As of this it affects the distribution of plants and animals. Plants need photosynthesis to survive

Question 9

How does temp affect communities

Answer 9

Temp affects communities because it affects photosynthesis. As of this there would be growth in plants. If the temperature is too cold Animals could die.

Question 10

How do moisture levels affect communities

Answer 10

Moisture levels affect communities if there is a lack of moisture. If there is a lack of moisture there would be little or no life at all. Rain is a form of moisture as it is very good for plants as it helps them grow. If there is no rain the plants would die

Question 11

How does wind affect communities?

Answer 11

It affects commmunities because if the wind is very prevailing it could affect the shale of the trees and possibly the whole landscape

Question 12

How does availability of oxygen affect communities?

Answer 12

It affects communities a lot because Animals need oxygen in order to survive therefore a lack of oxygen means there will be no animal life. Fish need a lot of dissolved oxygen to survive

Question 13

How does Availabilty of food affect communities?

Answer 13

It affects communities because is there is plenty of food, organisms breed successfully. If food is short however, then animals will struggle to survive

Question 14

How do new predators affect communities?

Answer 14

If there are new predators arriving, organisms will have no defence against them. Meaning the new predators could wipe them out quickly.

Question 15

How do New pathogens and parasites affect communities?

Answer 15

When a new pathogen or parasite emerges, organisms will have no resistance to it and therefore the organism will die

Question 16

What do ecologists look at?

Answer 16

They look at how biotic and abiotic factors affect the abundance (total number) and distribution of organisms

Question 17

What does studying an ecosystem involve?

Answer 17

It involves sampling an area and drawing conclusions

Question 18

Why must sampling an area nd concluding be done so well?

Answer 18

It ensures that the data is accurate and the conclusion is valid

Question 19

For random sampling- what equipment will you need

Answer 19

Quadrats and two tape masures-

Question 20

What is an ecosystem

Answer 20

It is the interaction of a community of living organisms with the non-living(abiotic) parts of the environment

Question 21

What is the simplest way of counting the number of organisms?

Answer 21

Quadrats

Question 22

What do animals usually compete for?

Answer 22

Food, territories and mates

Question 23

Animals have adaptations to do what?

Answer 23

Be successful competitors

Question 24

What do plants compete for?

Answer 24

Light,space,water, and mineral ions from the soil

Question 25

Plants have many adaptations for what?

Answer 25

Be good competitors

Question 26

What do organisms need to survive?

Answer 26

They need a supply of minerals from their surroundings and from the other living organisms in their habitat