Brainscape's Knowledge GenomeTM

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


See full index

Bio Year 12 Flashcards > Unit 3 Topic 1 > Flashcards

Unit 3 Topic 1 Flashcards

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

Classify the ranks of the linnaean system

A

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

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

What is CLassificatin and why is it useful?

A

The systematic grouping of both organisms and ecosystems
- This enbales a consistent understanding of the relationships, evolution, and diversity of living things

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

Species

A

a group of organisms that can interbreed or mate with one another to produce viable, fertile offspring

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

Interspecific Hybrids

A

The offspirng of 2 different species, they are infertile

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

R-Selection

A

Reproduction from R-strategists
-Large number of offspring
- Low survivability rate
- Little parent investment
- Can reproduce once
- Mature earlier
- Lower life expectancy
- T3 survival
- Smaller

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

K-Selection

A

Reproduction from K-Strategists
-Small number of offspring
- High survivability rate
- High parent investment
- Reproduce multiple times
- Mature later
- Higher life expectancy
- T1 and 2 survival
- Larger

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

Taxonomy

A

Grouping or classifying organisms according to the features they possess.

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

Phylogeny

A

Comparing genetic sequences and molecular structures
- Is used to classify evolutionary relatedness

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

4 Species interactions

A

Predation
Competition
Symbiosis
Disease

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

Predation

A

Involves a predator - prey relationship.
Prey numbers regulate predator numbers, but the presence of predators can impact ecosystem dynamics.

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

Competition

A

A relationship between organisms that use the same resources, and negatively affects both participants.

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

Symbiosis

A

A relationship between species with at least one member benefitting.

  1. Mutualism- both organisms benefit
  2. Commensalism- One organism benefits one is unaffected.
  3. Parasitism- One organism benefits other one is harmed.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Disease

A

Involves the harm to a living thing and can involve interaction between a pathogen and a host

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

Classification can be based on

A

Similarity of features
(linnean system)
Methods of Reproduction
(Asexual, sexual, R, K)
Molecular Structure
(phylogeny)

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

Clade

A

A group of organisms believed to comprise all the evolutionary descendants from one common ancestor

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

usefulness of molecular evidence

A

If two species have similar DNA sequences, it is used as molecular evidence to state they shared a common ancestor.
- The rate of accumulation of mutations can be used to calculate how long ago organisms diverged

17
Q

assumptions of cladistics

A

Common Ancestory (organisms within a group shared a common ancestor)
Bifurcation (pattern: dividing branch into two)
Physical change (physical changes occur over time)

18
Q

Phylograms

A

Branch lengths proportional to amunt of evolutionary time

19
Q

Cladogram

A

More Simplistic then Phylogram
No time scale

20
Q

Ecosystem

A

a biological community of interacting oerganisms and their physical environment, including both abitoic and biotic features.

21
Q

Importance of old-growth forests

A

provide habitat for endangered species
Hold in lots of carbon dioxide
Long growth time

22
Q

importance of productive soils

A

Promote health of plants, animals and humans

23
Q

importance of coral reefs

A

supports marine animals
protect coastlines from storms and erosion
provides jobs and recreation

24
Q

Comapring ecosystems

A

Compared using scales
-species diversity indicies
-Spcecies interaction (Predation, Competition, Symbiosis, Disease)
-Abiotic factors (Climate, precipitation, oxygen levels, Soil type)

25
Q

stratified sampling

A

The breaking down of large populations, into similar subgroups and collects random samples as a representation of the whole population

26
Q

importance of stratified sampling

A

It is done to make estimates of the population as a whole
Estimates Include:
- Population desnity
- Distribution
- Environmental Gradients
- Zonation
- Stratification

27
Q

Ways to minimise Bias

A

Law of Large Numbers
Random Number
-Generator
Counting Criteria
Calibration of Equipment

28
Q

Measuring biodiversity

A

Genetic- variety of gene variations in gene pool
Species- Variety of species present in an ecosystem
Ecosystem- Variety of ecosystems and habitats in a given region/biome

29
Q

Enviromental Factors limiting distribution

A

Each species has a set of enviromental conditions called a tolerance range
These conditions limit distribution and abundance of species

30
Q

Climate

A

Precipitation, wind, cloud cover, sunshine
Warmer climates support biodiversity
Colder Climates reduce biodiversity

31
Q

Water Quality

A

Marine and fresh water ecosystems rely on water quality
Measurable factors include: Light, Depth, Turbity (Water Clarity), Oxygenation, temprature, water pH, water flow

Bio Year 12 Flashcards (1 decks)

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