Classification

Question 1

Explain why after a forest is cleared, the species diversity of insects in the area decreases.

Answer 1

Decrease in variety of plants
Fewer habitats/niches
Decrease in variety of food/ fewer food sources
Aspect of clearing forest (including machinery and pesticides)

Question 2

Explain what is meant by a “hierarchy”

Answer 2

Groups within groups with no overlap between groups

Question 3

Explain the term “phylogenetic group”

Answer 3

Species grouped according to evolutionary links/history/relationships/common ancestry

Question 4

Cytochrome C is a protein involved in respiration.
Suggest a reason why cytochrome c is more useful that haemoglobin for studying how closely related different organisms are.

Answer 4

All organisms respire (therefore have cytochrome c)

Cytochrome c structure is more conserved/ less varied between organisms

Question 5

What is a species?

Answer 5

A group of similar organisms (shames genes/chromosomes)
Reproduce / product offspring
That are fertile

Question 6

Name the taxonomic group between order and genus

Answer 6

Family

Question 7

Name one other group to which all members of the “Apodiformes” order belong.

Answer 7

Kingdom
Phylum
Class

Question 8

Biologists analysed the amino acid sequence of blood proteins from 2 types of hummingbird
Explain how these sequences could provide evidence as to whether the these 2 types of hummingbird are different species

Answer 8

Different species would have different amino acid sequences

Amino acid sequence is the result of DNA/alleles/base sequence