Effects of the Environment on Organisms (HSC SSCE Biology): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Definition of a population
Definition of a population
Individuals of same species living in same area
Natural selection principle
Natural selection principle
Organisms with suitable traits survive & reproduce
What are selection pressures?
What are selection pressures?
Environmental forces affecting survival & reproduction
Peppered moth typical colour & purpose
Peppered moth typical colour & purpose
Speckled white for camouflage on lichen-covered trees
When & why cane toads introduced to Australia?
When & why cane toads introduced to Australia?
1935, to control greyback cane beetle pest
What is bufotoxin?
What is bufotoxin?
Toxin from cane toad glands affecting heart & nervous system
Red-bellied black snake adaptation to cane toads
Red-bellied black snake adaptation to cane toads
Developing smaller head sizes
Define biological control
Define biological control
Using natural predator to control pest organism numbers
Cactoblastis moth role in Australia
Cactoblastis moth role in Australia
Biological control agent for prickly pear
Why is genetic diversity important?
Why is genetic diversity important?
Enables populations to adapt to new selection pressures