3TEST

Front

What is the energy transfer in an ecosystem?

Back

Energy transfer in an ecosystem refers to the flow of energy from one trophic level to another, typically decreasing as it moves up the levels. For example, if an organism at level 4 receives 700 J of energy, the organism at level 2 would receive 7 J.

Front

What is heritability in the context of evolution?

Back

Heritability is a principle of Darwin’s theory of evolution by natural selection, meaning traits that offspring inherit from their parents. An example is offspring having similar beak sizes as their biological parents.

Front

What is a density-dependent factor?

Back

A density-dependent factor is a variable that affects a population more significantly as the population density increases. An example is disease transmission in a deer population.

Front

What is speciation?

Back

Speciation is the process by which new species arise. It often occurs when populations become reproductively isolated, such as when they are unable to breed with organisms from their original population.

Front

What is parasitism?

Back

Parasitism is a type of symbiotic relationship where one organism (the parasite) benefits at the expense of another organism (the host). An example is fleas harming a cat by sucking its blood.

Front

What is the role of natural selection in evolution?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring. It is a key mechanism of evolution.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients. Levels include producers, primary consumers, secondary consumers, and tertiary consumers.

Front

What is the difference between mutualism and commensalism?

Back

Mutualism is a symbiotic relationship where both species benefit, while commensalism is where one species benefits and the other is neither helped nor harmed.

Front

What is the significance of genetic variation in a population?

Back

Genetic variation is crucial for a population's ability to adapt to changing environments and is a key factor in natural selection.

Front

What is the concept of carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably, considering resources like food, water, and habitat.