1.1 - Variety of life, adaptation and competition Flashcards
What is the biological concept?
- the most common definition of a species
- a species is a set of individuals who can reproduce to produce fertile offspring
What is classification?
The arrangement of organisms into groups of various sizes on the basis of shared features
What is the 5 kingdom system?
Plantea, Animalia, Fungi, Protista, Monera
What 3 things can monera be split into?
- Eukarya - plants, animals, fungi, protista
- Eubacteria - all other bacteria
- Archaebacteria - can live in extreme conditions e.g high water temp
How are species names split up?
D-domain K-kingdom P-phylum C-class O-order F-family G-genus S-species
What does ‘competition’ mean?
When animals struggle for resources
What are 4 resources animals compete for?
- food
- water
- mates
- land (shelter/territory)
What are 4 things plants compete for?
- sunlight
- water
- minerals
- space (to spread roots(
What 3 factors can influence the size of a population?
- disease
- migration
- predation
What is intraspecific competition?
Same species competition
What is interspecific competition?
-different species competing
How does intraspecific competition have a stabilising effect?
- population rises so more competition
- population falls so less competitiob
Why does the prey population increase to a peak before the predator population?
-because it is a food source
How does the predator population reach a peak?
-when the prey population is decreasing (because it is being eaten)
What 2 parts does every ecosystem consist of?
- a non-living part called the habitat
- a living part called the community
