Chapter 1 Flashcards
(19 cards)
Variations
Differences in characteristics of organisms caused by genetic and environmental factors.
Biological Diversity
The number and variety of organisms in an area.
Species
A group of organisms that share similar genetic and physical characteristics. These can produce fertile offspring.
Speciation
The evolution of different species from a single ancestor.
Structural Adaptation
An inherited physical characteristic that helps an organism survive its environment.
Behavioural Adaptation
An inherited behavioural characteristic that helps an organism survive its environment.
Diversity Index
A measure of the biological diversity in an area.
Environment
The area or conditions in which an organism lives.
Competition
The struggle among organisms for access to a limited resource such as food or territory.
Specialists
An organism that is adapted to specific environments and has a narrow niche.
Narrow Niche
A highly specialized role or characteristic activity undertaken by an organism in an ecosystem.
Specialization
Adaptations for surviving in very specific environments.
Symbiotic
An interaction between organisms of different species living in close proximity to each other in a relationship that lasts a long period of time.
Heritable
A genetic characteristic that can be passed on.
Reproductive Strategy
A method an organism uses to reproduce.
Asexual Reproduction
The formation of a new individual from a single organism.
Binary Fission
Splitting of a single-celled organism into two new organisms approximately equal in size.
Spores
A single-celled reproductive structure from which an individual offspring develops.
Zoospores
A flagellated asexual spore.
