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Flashcards in Unit 2 Deck (41)
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1

Define 'Terrain'

Terrain refers to how the land lies

2

What are the four main hazards and risks associated with field work?

-Terrain
-Weather Conditions
-Isolation
-Tidal Changes

3

How can a field biologist prepare for the risk of changing weather conditions?

Check the forecast
Wear appropriate clothing, footwear

4

What is a risk assessment?

Document that identifies potential hazards, assesses the likelihood of them occurring and describes how to minimise their occurrence

5

What should be considered before sampling is carried out?

- How to minimise impact on wild species
- Legalisation which protects rare animals

6

What sampling technique would you use to sample along an area where abiotic factors are changing?

Transect Surveys

7

Describe a point count

Sampling technique used for sampling bird populations over a given area and period of time

8

Describe a transect and the two things you can sample with them

Line along which different samples can be taken
Where terrain or abiotic factors are changing
Use quadrats
Used to sample small slow moving animals or abiotic factors

9

What is a benefit of using remote direction for elusive species?

Can use camera traps so they can observe the animal without the observer being present

10

Describe Scat sampling

Collecting animal drops providing information about the animals diet and abundance

11

What are the three types of sampling?

Random
Stratified
Systematic

12

Describe the difference between random and stratified sampling

Random - individuals selected from larger populations chosen at chance
Stratified - large population split into smaller populations then individuals selected from sub populations

13

Explain what Systematic Sampling is?

Sampling that is taken at regular intervals, eg every two minutes along the transect

14

State the 8 Taxonomic Levels

Domain
Kingdom
Phyllum
Class
Order
Family
Genus
Species

15

Why is it important for a biologist to be familiar with taxonomic groupings?

Allow predictions to be made between unknown organisms and model organisms

16

What are the five divisions between the plant kingdom?

Mosses
Liverworts
Ferns
Gymosperms
Anglosperms

17

What plant type is this description of?
- Flowerless
- No seeds
- No Vascular System

Mosses

18

What method of reproduction do ferns use?

Spores

19

Do Liverworts produce flowers?

No, they are flowerless

20

Do Gymosperms
a) Produce flowers?
b) Produce spores for reproduction?

a) Yes
b) No, they reproduce by seed production

21

State the five animal phyla you are required to know for Advanced Biology

- Chordata
- Anthropoda
- Nematoda
- Platyhelminthes
- Mollusca

22

Give an example of an organism in the chordata phyla

Sea squirts and Vertebrates
Example: Birds, Mammals, Reptiles, Amphibians, Fish

23

What animal phyla would wasps, a joint legged invertebrate with a segmented body and paired appendages be in?

Arthropoda

24

What organisms fall in the Platyhelminthes phyla?

Organisms who are bilaterally symmetrical and don't have a body cavity or any internal organs
Example: Flat worms

25

What could you use to identify organisms which have been sampled?

Biological Keys
Classification Guides
Analysis of DNA

26

What is divergent evolution?

Accumulation of differences between previously closely related groups of species, leading to the formation of a new species

27

What sampling technique would you use to estimate the size of a population of animals?

Mark and Recapture

28

Give three examples of methods of marking an individual

Banding
Tagging
Surgical Implantation
Painting
Hair Dipping

29

What three things must happen for estimates of a population to be more accurate?

- Equal chance of capturing unmarked and marked individuals
- No immigration or emigration from the areas
- Marked individuals are completely mixed into populations

30

Give one reason why a species may be monitored

- Interest in species itself(eg. if it is endangered)
- Indicator Species