Unit 2 Flashcards
(21 cards)
What are the two ways of classifying organisms?
Artificial system- based one 1/2 characteristics
Natural system- based on evolutionary relationships
What is a species?
A group off organisms that can produce fertile offspring
What does asexually mean?
Only needing one parent
What is a hybrid?
When two different species interbred producing infertile offspring
What does a pyramid of biomass show?
The dry mass of living materials
What does a pyramid of numbers show?
The feeding relationships in a food chain
How is energy transferred at different trophic levels?
Through:
Respiration
Egestion
Excretion
What happens in the Carbon cycle?
Carbon dioxide is removed from the air by photosynthesis in plants
(Carbon cycle) How is carbon dioxide released in the air?
Plants and animals respiring
Bacteria and fungi as decomposers
Fossil fuel burning
(Nitrogen cycle) What does nitrifying bacteria do?
Converts ammonia to nitrates
(Nitrogen cycle) What does denitrifying bacteria do?
Converts nitrates to nitrogen gas
(Nitrogen cycle) What does nitrogen fixing bacteria do?
Lives in root nodules fixing nitrogen gas
Whats a ecological niche?
Describes the habitat a organism lives in
Define interspecific
Between organisms of different species
Define intraspecific
Between organisms of the same species
Describe parasitism
Feed on or in another living organism
Only one person benefits
Describe mutalisum
Mutual benefits for both organisms
How does animals adapt to keeping warm?
Reducing heat loss with anatomical adaptations
They have excellent insulation
What adaptation do penguins have that help keep then warm?
A counter current exchange system
Warm blood passing to the cold areas and cold blood passing to warm areas to warm up
What is a biochemical adaptation of living in the cold?
Antifreeze proteins in cells
What are the 7 classification groups?
Kingdom Phylum Class Order Family Genus Species
(Kinky prawns can only find gay sex)
