Ecosystems & Interactions
A community of living and nonliving things that interact in an environment.
What is an ecosystem?
A sequence that shows how energy moves from one organism to another.
What is a food chain?
A molecule that carries genetic informatio
What is DNA?
A structure made of DNA that carries genes
What is a chromosome?
An organism’s role in an ecosystem
What is a niche?
Biotic are living (plants, animals); abiotic are nonliving
What is the difference between biotic and abiotic factors?
An organism that makes its own food
What is a producer?
A section of DNA that controls a specific trait.
What is a gene?
One parent produces identical offspring
What is asexual reproduction?
Population = one species; community = multiple species interacting.
What is the difference between a population and a community?
The variety of living organisms in an ecosystem
What is biodiversity?
Animals eat both plants and animals.
What are omnivores?
Different forms of a gene
What are alleles?
Two parents combine gametes to create genetically unique offspring.
What is sexual reproduction?
They will compete until one adapts or leaves.
What is interspecies competition?
When both the species benefit.
What is Mutualism?
In a food web, all organisms rely on each other for surviv
What is interdependence?
Dominant and recessive.
What are the 2 types of alleles?
When the make sperm cell and female cell unite.
What is fertilization?
Tigers hunt deer and boar in forests, controlling their populations and keeping the ecosystem balanced.
What is tiger's niche?
Ecological relationship between species/organisms.
What is symbiosis?
When two species share the same habitat but use different parts or resources to avoid competition
What is resource partitioning?
These are the stronger alleles.
What are dominant alleles?
A cell formed when a sperm and an egg join together.
What is a zygote?
A beaver builds dams and eats tree bark. This describes its __________ in the ecosystem
What is its niche?