Environment Changes
When the environment changes, individuals change their traits to survive. True or False?
👉 What is False?
Differences in traits within a population are called what?
👉 What is variation?
What introduces new traits into a population?
👉 What is mutation?
This is the process by which organisms better adapted to their environment survive and reproduce.
👉 What is natural selection?
Why are animals harder to catch when their color matches their environment?
👉 What is camouflage?
Does natural selection act on individuals or populations over time?
👉 What are individuals survive, but populations change over time?
Which population is most likely to survive environmental change: one with variation or one without?
👉 What is a population with variation?
Do organisms mutate because they “need” a trait?
👉 What is no?
A trait that helps an organism survive and reproduce.
👉 What is an adaptation?
If green grass grows in a snake habitat, which snakes are more likely to survive?
👉 What are green snakes?
If black squirrels became more common over generations, what likely changed in the forest?
👉 What is there were more dark/black trees?
Why is variation important in natural selection?
👉 What is it increases the chance some individuals will survive change?
If a helpful mutation occurs, what must happen for it to spread?
👉 What is the organism must survive and reproduce?
Differences in traits among individuals in a population.
👉 What is variation?
Why do predators influence natural selection?
👉 What is they create selective pressure?
If floods become more common, which lizards are more likely to survive?
👉 What are lizards with shorter legs (better climbers)?
If a population has no variation in blubber thickness and the water warms, what might happen?
👉 What is the population may die out?
Over many generations, helpful traits become more common because…
👉 What is individuals with those traits reproduce more?
When organisms produce more offspring than can survive.
👉 What is overproduction?
If squirrels become darker over generations, what likely changed?
👉 What is the trees became darker?
Why don’t all populations survive environmental change?
👉 What is because some lack variation needed for survival?
In many assessment questions, why is “Only Population 2 will survive because it has variation” often correct?
👉 What is because variation allows some individuals to survive environmental change?
Explain the full process of natural selection using:
Variation
Environment change
Survival
Reproduction
👉 What is: Individuals have variation. When the environment changes, some traits help survival. Those individuals reproduce more, passing traits to offspring. Over generations, the population changes.
The ability of an organism to survive and reproduce in its environment.
👉 What is fitness?
Does camouflage guarantee survival? Why or why not?
👉 What is no, it only increases chances of survival?