Chapter 10 and 11- Classification and biodiversity Flashcards
What is an autotrophic organism?
Nutrients acquired by photosynthesis
What is a heterotrophic organism?
Nutrients acquired by ingestion of other organisms
Out of the 5 kingdoms, which are multicellular?
- fungi
- plantae
- animalia
Out of the 5 kingdoms, which are unicellular?
- prokaryotae
- Protoctista
Relationship between classification and phylogeny?
Modern classification reflects phylogeny
What are the three domains?
- archaea
- bacteria
- eukaryota
Why do two species share the same first name?
Same genus
Advantages of using binomial nomenclature than common names?
- universal
- different common name for same organism
- no language barrier
- know which genus and species it belongs to
How can you estimate the age of extinct organisms?
Look at fossil record
Fossils deeper in ground older than those near surface
Explain what developments in science show about the nature of scientific knowledge
Always improving
What are domains decided upon?
-amino acid sequences
Why the three domain system is now used in preference to the five kingdom system
- fundamental differences between bacteria and archaea
- bacteria and archaea have diff RNA
- eukaryotes all have 80s ribosomes
Likely causes of variation in body length of x
- environment
- genetics
- age
What four observations did Charles Darwin and Wallace make?
- offspring are similar to their parents
- no two are identical
- organisms can produce large numbers of offspring
- populations tend to remain stable in size
What three sources of evidence are there for evolution?
- fossil record
- comparative biochemistry
- comparative anatomy
What is intraspecific variation?
Differences between organisms within a species
What is interspecific variation?
-differences between members of different species
What type of variation is height
Continuous
What type of variation is blood type?
-discontinuous