Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Study Of Ecosytem > Flashcards

Study Of Ecosytem Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

How did you collect the fauna from an ecosystem you have studied

A

Using a pooter - suck organism into jar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How do you identify collected fauna?

A

Using a key

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A quantitive study of a named plant species

A

Quadrat- count dandelion at each point of quadrat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How do you ensure the sample is random?

A

Throw quadrat randomly behind you

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why is it essential to use a random sampling technique?

A

To prevent bias

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Suggest abiotic factors that could affect the distribution of named plant species

A

Temperature - enzymes
Light intensity - photosythesis
PH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

State one way human activity can have an impact on your named ecosystem

A

Pollution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How is it possible for a secondary consumer to be a primary consumer of another chain

A

It could be an omnivore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Caterpillars have different mouth parts than butterflies, how does this eliminate competition?

A

Feed on different parts of plant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

To carry out a quantitative study, name the method you would employ

A

Quadrat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Named animal and plant adaption to its habitat

A

Animal
Lady bird - acid, brightly coloured = warns predators
Hedgehog - spikes
Plants dandelion - long roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Give 5 plants found in hedgerow

A

Buttercups, dandelions, daisies, nettles, grasses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Give 5 animals present in hedgerow

A

Fox, rabbits, earthworms, snails, slugs, spiders ladybirds, blackbirds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a qualitative study?

A

It records the presence or absense of something

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is a quantitative study?

A

Records the numbers or amounts that are present

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Give one example of a possible error in ecological surveying and state how this error can be eliminated

A

Changing conditions - study ecosystem during different seasons
Non-random - throw behind your back
Miscalculation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Safety hazard in ecosystem studied

A

Accidental ruin home of animal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Use of beating tray

A

Shake bushes and it’s for insects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Pitfall trap use

A

Sink into soil or sand and traps crawling animals

20
Q

Use of sweep net?

A

Sweep through grass and it will collect insects

21
Q

Use of mammal trap

A

Set trap with bait for mammals

22
Q

Use of tullgren funnel

A

Heat from bulb cause small organisms to move down - centipedes

23
Q

Use of cryptozoic trap

A

Placed on soil left for some time, over night to collect animals at night or that prefer moist conditions. Slugs, snails

24
Q

Name a method you would employ for the quantitative study of a species of small herbaceous plant

A

Quadrat

25
Q

Name one edaphic factor that could affect the distribution of a herbaceous plant in the ecosystem

A

PH

26
Q

Name of ecosystem?

A

Grassland / hedgerow

27
Q

Draw a food web from the ecosystem you have studied which contains at least three food chains and four trophic levels

A 
Hawk                        Badger
Robin
            Thrush            
           Caterpillar       Slug
                      Dock leaves
[page 30 exam papers]
28
Q

Suggest why ecological surveying is important

A

Detects changes

Monitors biodiversity

29
Q

What is meant by the term variation?

A

Differences between organisms of the same species

30
Q

Give a reason why there might be variation in the height of a mature plant species in the ecosystem

A

Difference in light levels, altitude or aspect

31
Q 
Name appropriate organisms for pyramid of numbers and indicate which would be most likely to be herbivore
Large box
Small box
Large box
Small box 
[small = big animal]
A

Parasite
Badger
Slug
Dock leaves

Herbivore- first large box

32
Q

What is the significance of energy loss at each stage in a food chain in relation to

i) the length of the food chain
ii) the number of organisms at the final trophic level

A

i) limits length

ii) limits number

33
Q

If a niche becomes vacant in an ecosystem for a decomposed species, suggest why some other decomposer species may not be able to occupy the vacant niche

A

May not be suitably adapted

34
Q

Describe a procedure for estimating rabbit numbers in an ecosystem

A

Capture-recapture ->
Portion of population is captured using mammal traps and marked. The number is recorded and then released.
Next day, repeat capture procedure and record number captured and number of recaptured [marked]
No.captured day 1 x day 2 / number of animals recaptured

35
Q

Give two possible effects of an ecosystem of the extinction of a plant species

A

Decrease in consumer numbers
Increase in numbers of other plants
Soil erosion

36
Q

Suggest one advantage and one disadvantage of biological control of a pest organism

A

Advantage - no harmful chemicals used

Disadvantage - possible extinction of species / balance of nature disturbed

37
Q

How did you investigate light intensity and what is it in ecosystem?

A

Light meter was used to read the light intensity in different areas. Repeat readings a number of times to find an average
Lower near hedge

38
Q

How did you investigate the PH and what is it in ecosystem?

A

Add a few drops of universal indicator to a soil sample on white tile and match resulting colour to the colour chart and read PH
Neutral or slightly basic soil of PH

39
Q

As part of your study you constructed a pyramid of numbers. Name the species that occupied the top of your pyramid and what is the main prey of the species

A

Fox

Rabbit

40
Q

Name one animal from your named ecosystem and describe how you carried out a quantitative study of that animal

A

Rabbit - capture/recapture

41
Q

Suggest one way in which marking an animal might endanger it

A

More conspicuous to predators

Toxic marker

42
Q

Ecosystems are subject to changes, both natural and artificial. Mention one of each type of change as it applies to your named ecosystem

A

Natural - Weather such as rain, storms, floods = damage

Artificial - overhunting, fertilisers [man-made]

43
Q

How did you present the results of your survey? / how did you record results

A

Bar chart
Graph

[found frequency and recorded info on bar chart]

44
Q

How did you investigate temperature

A

Using a thermometer will give the degree of hotness of soil, water or air of an ecosystem.

45
Q

In ecological studies what is a key?

A

A guide to identification

Biology (36 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions