Question

1. organism often produces more offspring than are able to survive, darwin referred to this as

a competition
b overproduction
c variation
d special breeding

1. variation of traits within a population of organisms is beneficial because

a it allows them to stand out in the population
b it allows them to attract more mates
c it provides characteristics that may help them to survive
d it gives a better chance of mutations

1. which of the following is a factor in natural selection?

a individual species compete with each other to survive
b species have variation of traits that benefit the population
c individuals better adapted to survive will pass on their traits
d all of these

1. ______ traits are passed from parent to offspring.

a inherited
b acquired
c speciation
d adaptation

1. individuals that are better adapted to the challenges of their environment tend to

a decrease in populations
c increase in populations
b have more mutations
d produce less offspring

1. fisherman get paid more by the weight of the fish instead of how many fish. they began using new nets that would catch larger fish and let smaller ones go. what is most likely going to happen to the fish population in the next 10 years?

a you will see more fish that are larger
b you will see more fish that are smaller
c the fish will lay more eggs
d larger fish will leave the area

1. rabbits were introduced to australia in 1859. they quickly multiplied and began to eat all of the plants. a deadly virus was introduced to the rabbits in order to control their numbers. over time the virus became less effective on the rabbit populations. what is the best explanation for this

a the rabbits all died and the virus wasnt needed
b the virus became weak and didnt have the same effect
c the rabbits moved to a different location away from the virus
d the rabbits survived the virus and passed those genes onto their offspring

Explanation:

1. This term describes organisms producing more offspring than can survive, a key Darwinian concept.
2. Trait variation helps some individuals survive environmental pressures, supporting natural selection.
3. All listed options are core components of natural selection: competition, beneficial trait variation, and heritability of adaptive traits.
4. Traits passed from parents to offspring are defined as inherited.
5. Better-adapted individuals survive and reproduce more, increasing their population share.
6. Selective removal of large fish means smaller fish survive to reproduce, shifting the population to smaller sizes.
7. Rabbits with genes resisting the virus survived, passed these traits to offspring, making the virus less effective over time.

Answer:

1. B. overproduction
2. C. It provides characteristics that may help them to survive
3. D. All of these
4. A. inherited
5. C. increase in populations
6. B. You will see more fish that are smaller
7. D. The rabbits survived the virus and passed those genes onto their offspring