Brainscape's Knowledge GenomeTM

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


See full index

Biology > Unit 3 > Flashcards

Unit 3 Flashcards

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

State the effect of removing an organism from a food web

A

Answers can range from:
Prey decrease
Insects increase
Prey decrease

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

What is a niche?

A

A role that a organism plays in its community

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

List some resources that organisms fight for?

A

Food
Mates
Space (territory/ habitat)
Water

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

Difference between intraspecific and interspecific competition?

A

Intraspecific is competition between the same specie for same resources.

Interspecific is competition between different species for resources.

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

Species?

A

Group or organism that can interbreed to make fertile offsping
(Make kids no trouble)

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

Biodiversity?

A

The different organisms living in a area

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

Population?

A

All the same species in one area

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

Ecosystem?

A

Living and non living things in one area

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

Habitat

A

Where organism lives

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

Producer?

A

Plant at the start of a food chain

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

Consumer

A

Animal that eats another animal or plant

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

Herbivore

A

Only eat plants

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

Carnivore

A

Only eat meat

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

Omnivore

A

Eats both animals and plants

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

Predator

A

Organism that hunts another organism for food

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

Prey

A

Gets hunted by another animal gets eaten

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

Community

A

All organisms in an ecosystem

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

Niche

A

Role a organism has in its community

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

Intraspecific competition?

A

Same species fight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Interspecific competition?

A

Different species fight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Name some living components?

A

Animals
Plants
Bacteria
Insects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Name some non living components?

A

Light
Water
Soil
Rocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What do plants fight for?

A

Light
Water
Space (to grow)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What do animals fight for?

A

Food
Water
Shelter
Mates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are food chains?

A

They show the linear flow of engery between organisms
(Always goes in one direction)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is a food web?

A

Shows the engery flow between organisms like a food chain.
(Looks more like a map)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Things that have to be in a niche?

A

-Food needed by the thing
-Interactions with others
-Competition between others
-How it helps in the community
-Environments it can tolerate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

An ecosystem consists of abiotic factors plus..

A

A community and it’s habitat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

A rabbit feeds on grass. It’s eaten by foxes. And it’s a habitat for fleas.

What is this an example of?

A

Niche

30
Q

State the difference between biotic and abiotic factora

A

Abiotic is not living
Biotic is living

31
Q

Name 4 biotic factors

A

Predators
Food
Disease
Competition

32
Q

Name 4 abiotic factors

A

Light intensity
PH
Moisture
Temperature

33
Q

How to measure abiotic factors?

A

PH meter
Moisture meter
Light intensity meter
Thermometer

34
Q

Errors with moisture meter and PH meter?

A

Probe not being cleaned or not pushed far enough

35
Q

Light intensity meter errors?

A

Place being shaded

36
Q

How to use quadrants?

A

Throwing them in a random location

37
Q

Limitations of quadrants?

A

People thinking one plant is not in our out

38
Q

Errors with quadrants?

A

Not being thrown randomly

39
Q

What are pitfall traps?

A

They are used to sample small bugs living in the ground.

40
Q

Errors with pitfall traps?

A

Not being covered enough.
The container being white insects may avoid it.
Leaving it for too long that animals eat each other

41
Q

Limitations of pitfall traps

A

Top of trap is not leveled with the soil stopping animals falling into it.

42
Q

Describe what is happening to the human population and food demand

A

It’s increasing

43
Q

Say 2 ways food yeilds can be increased

A

-Gm crops
-Fertilisers

44
Q

Why are nitrates needed by plants?

A

So they can make amino acids that help plants make their plant protein

45
Q

How do fertilizers help plants?

A

Help them make amino acids that help them make proteins

46
Q

Explain how leaching of fertilizers into fresh water can cause agal blooms and fish deaths.

A
  1. Fertilizer leaches into fresh water
  2. Algal bloom happens and algal population goes up
  3. The algal population reduces light in the water killing the other plants.
  4. Dead plants become food for bacteria they increase in numbers.
  5. The bacteria use up a lot of the oxygen making the oxygen availability very small for other organisms like fish.
47
Q

Alternative to fertilizer?

A

Gm crops (genetically modified crops)
They have new genes inside their DNA to give them inproved characteristics.

Advantages include bigger yeilds and better resistance to pests.

48
Q

Explain how pesticides help improve food production?

A

They kill things like insects and other things that would be a threat to the yeild

49
Q

How do pesticides sprayed onto crops result in lethal levels of toxicity at the top of the food chain?

A

Plants would absorb the pesticides.

Small animals would eat the plants. Getting a few of the pesticides.

Bigger animals eat lots of the smaller animals.

This is called bioaccumlation

50
Q

How can biological control and GM crops be used as an alternative to pesticides?

A

Genetically modified crops
➡︎ they can improve characteristics of the plants. Like resistance to disease and pest resistance.

Biological pest control
➡︎using the natural predators of the pest would be less toxic than using pesticides.

51
Q

Food yeilds?

A

The amount of food grown from crops

52
Q

Fertilizer?

A

Mix of chemicals to help increase crop yeild

53
Q

Nitrates?

A

Important chemical for amino acids and protein making

54
Q

Pesticides?

A

Chemicals that kill animals or weeds anything that harms crops

55
Q

Amino acids?

A

The building blocks of proteins

56
Q

Leaching?

A

When fertilizer gets washed into water

57
Q

Agal bloom?

A

When the algal population goes up by a lot due to fertilizer

58
Q

GM crops?
(genetically modified crops)

A

Living thing that had new genes added to its DNA artificially.

59
Q

Toxicity?

A

A measure of the harmfulness of a chemical to a living thing

60
Q

Biological pest control

A

Using natural living things to help control pests

Using natural predators to eat/kill pests naturally

61
Q

How can we make more food from the same area of land?

A

-fertilizer
-GM crops
-pesticides
-biological pest control

62
Q

How to increase food yeilds?
(The farming part)

A

-using fertilizer
-using Gm crops

63
Q

How to prevent pests damaging crops?

A

-using pesticides
-gm crops
-biological pest control

64
Q

Fertilizer

Does it increase crops yeild?

Does it prevent damage to crops?

Advantage?

Disadvantage?

A

Yes it increase crop yeilds

No it doesn’t prevent damage

Advantage: increase crop yeild

Disadvantage: can leach into fresh water

65
Q

Pesticides

Does it increase crops yeild?

Does it prevent damage to crops?

Advantage?

Disadvantage?

A

No

Yes

Advantage: Prevents crop damage

Disadvantage: bioaccumlation in food chains

66
Q

Gm crops?

Does it increase crops yeild?

Does it prevent damage to crops?

Advantage?

Disadvantage?

A

Yes

No

Advantage: can increase yeild and protect crops from pests

Disadvantage: expensive

67
Q

Biological pest control

Does it increase crops yeild?

Does it prevent damage to crops?

Advantage?

Disadvantage?

A

No

Yes

Advantage: no chemicals required

Disadvantage: difficult to handle

68
Q

How do fertilizer help plants grow?

A
  1. It’s added to soil to increase nitrate of the soil.
  2. Nitrate is dissolved in water and ate absorbed into plants
  3. Nitrate makes amino acids. Nitrates and amino acids mix to make proteins
69
Q

Problems with pesticides?

A

-Bioaccumlation

70
Q

2 ways that gm crops can help improve the worlds food supply?

A

-make yeild larger
-make them resistant to pests

71
Q

State the term that describes the use of predators as an alternative to pesticides?

A

Biological pest control

72
Q

Use these statements and place them in order.

J) pesticides are absorbed by plants
K) pesticides build up in animals
L) plants are eaten by animals

A

J, L, K

Biology (8 decks)

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