Skip to content

Course home

Sign up

6.4 Classification of living organisms

EasyMediumHard
12345678910111213
Question 12

Scientists are reviewing the classification of three beetle species found in grassland.

a.

The table shows two observations of the beetles.

SpeciesAntennaeHind legs
MClub-shapedLong
NThread-likeShort
PClub-shapedLong

Give one observation that could support placing species M and P in the same classification group.

[1]
b.

All three species were initially placed in the same classification group.

Improved microscopes showed that the internal cell structures of species N differed from those of species M and P.

Give one change scientists should make to the classification.

[1]
c.

Scientists obtained further evidence by comparing species N and P with species M.

Species compared with MWing-case pattern compared with MPercentage similarity of the DNA base sequence to M
NVery similar82%
PLess similar96%

Explain which species, N or P, is more closely related to species M, despite the evidence from the wing-case patterns.

[2]
Markscheme

6.4 Classification of living organisms Questions

  1. GCSE
  2. /Biology
  3. /6.4 Classification of living organisms

81 exam-style questions on AQA GCSE Biology 6.4 Classification of living organisms, covering 6.4 Classification of living organisms. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank