Investigating diversity

Question 1

What is the Genetic diversity within or between species, made by?

Answer 1

• the frequency of measurable or observable characteristics
• the base sequence of DNA
• the base sequence of mRNA
• the amino acid sequence of the proteins encoded by DNA and mRNA.

Question 2

How would you design appropriate methods to ensure random sampling?

Answer 2

Use a random number generator to pick plots on a grid to measure with a quadrat.

Question 3

What has modern technology allowed us to find out about species diversity?

Answer 3

Gene technology has caused a change in the methods of investigating genetic diversity; inferring DNA differences from measurable or observable characteristics has been replaced by direct investigation of DNA sequences.
Knowledge of gene technologies will not be tested.

Question 4

What is species richness?

Answer 4

Species richness is a measure of the number of different species in a community.

Question 5

What is Biological diversity

Answer 5

‘Biological diversity’ means the variability among living organisms in a given area

Question 6

What are the types of courtship behaviour?

Answer 6

• Singing
• Displays
• Dancing
• Preening
• Feeding
• Building

Question 7

What is the advantage of courtship behaviour?

Answer 7

• helps recognise the same species
• helps identify a mate capable of breeding
• forms a pair bond
• synchronizes mating

Question 8

Whats a community made up of?

Answer 8

Abiotic (rocks) and biotic (living things) interacting creates a community.

Question 9

What are the three types of transect?

Answer 9

Line transect
Belt transect
Interrupted transect

Question 10

What is a line transect?

Answer 10

Line transect - a tape measure is placed along the line and any species which touch the tape measure will be recorded.

Question 11

What is a belt transect?

Answer 11

Belt transect - quadrats are placed along the transect one after another, so that each quadrat is touching

Question 12

What is a interrupted transect?

Answer 12

Interrupted transect - quadrats are placed at regular intervals along the transect

Question 13

How do you estimate a population size?

Answer 13

Capture 10 or 100 of the population
Mark them or tag them and release them
Catch another 10 or hundred and see what percent are the tagged ones
Divide the tagged first by tagged again and multiply by 100