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Flashcards in ECOLOGY Deck (32):
1

What is ecology?

The study of relationships between living things and their environment

2

What is an ecosystem

An ecosystem is a system of living things that interact with each other and the physical world

3

What is abiotic

Non-living things

4

What is biotic

Living things

5

What is an autotraph

Organisms that produce their own food from on an a energy, such as the sun

6

What is a heterotroph

Organisms that consume other organisms as a food source eg animals + fungi

7

What is a food chain?

A sequence of organisms feeding off each other

8

What do food chains show?

They show where energy is transferred not who eats who

9

How much energy is transfer between trophies levels

Only 10% the rest is lost through heat and respiration

10

What does HIPPO stand for

H - habitat loss eg deforestation and coral bleaching
I - invasive species eg cane toad, foxes, boxthorn
P - population eg human overpopulation use more resources, causes other four factorS
P - pollution eg green house gases
O - overcropping eg mining and hunting

11

Define niche

The role an organism has within its ecosystem

12

Define trophic level

Trophic level describes the number of energy transfers from the producer and so on

13

Define Predation

One organism kills another for food eg lion

14

Define Parasitism

One organism benefits whilst the other is harmed eg human —> mosquito

15

Define commensalism

One organism benefits and the other is unaffected eg desert eagle and cactus

16

Define Mutualism

Both organism benefit eg dog and human

17

Define competition

Both organism fight for the same resource eg lion and hyena

18

Define biodiversity

Biodiversity is the variety of life at all structural levels

19

Define species

A group of morphological similar creatures which can interbreed to produce fertile young / do they produce fertile young

20

Why is biodiversity important

For Natural resources (food, water, wood), natural services (air + water purification, soil fertility), oxygen

21

What leads to biodiversity

The greater number of niches can (does) lead to greater number of biodiversity

22

What are benefits of biodiversity

New food sources (fruits, grains, met ect), medicines, plants, jellyfish + sea anemones

23

Define ecosystem

Systems of living things that interact with one another and the physical worlds

24

Define community

All the living things in an ecosystem, they are all interdependent, they need each other to survive

25

Define habitat

The place where an organism lives is its habitat

26

What is a population limiting factor

There are generally less resources than there are organisms

27

Define saprotrophs

Consume dead or decaying organic matter eg fungi

28

Define symbiosis

The process of organisms living together

29

Name the types of adaptions

Structural adaption (physical features eg teeth), behavioural adaption (things organisms do eg migration), physiological adaptions (keeping internal conditions constant eg heart rate, body temperature)

30

Define ecological diversity

Different habitats, niches, species interactions

31

Define species diversity

Different kinds of organisms, relationships among species

32

Define Genetic diversity

Different genes and combinations of genes