Natural Selection
Biology ⇒ Evolution and Diversity
Natural Selection starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Natural Selection.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
A population of beetles has green and brown color variants. Birds prefer to eat green beetles. Over time, the population becomes mostly brown. What process is this an example of?
A population of insects is exposed to a new pesticide. Most die, but a few survive and reproduce. Over time, the population becomes resistant to the pesticide. What is this an example of?
A population of rabbits lives in a snowy environment. Over time, more white rabbits survive than brown rabbits. What is the selective pressure in this scenario?
Describe how environmental changes can affect natural selection.
Describe how overproduction of offspring can lead to natural selection.
A population of beetles has green and brown color variants. Birds prefer to eat green beetles. Over time, the population becomes mostly brown. What process is this an example of?
A population of insects is exposed to a new pesticide. Most die, but a few survive and reproduce. Over time, the population becomes resistant to the pesticide. What is this an example of?
A population of rabbits lives in a snowy environment. Over time, more white rabbits survive than brown rabbits. What is the selective pressure in this scenario?
Which of the following best describes 'survival of the fittest'? (1) The strongest organisms survive (2) The organisms best adapted to the environment survive (3) The largest organisms survive (4) The fastest organisms survive
Which of the following best explains why antibiotic resistance in bacteria is an example of natural selection? (1) Bacteria choose to become resistant (2) Only resistant bacteria survive and reproduce when antibiotics are present (3) All bacteria are equally affected by antibiotics (4) Antibiotics cause bacteria to mutate
Which of the following is a source of genetic variation? (1) Mutation (2) Cloning (3) Identical twins (4) Asexual reproduction
Which of the following is an example of an adaptation? (1) A giraffe's long neck (2) A broken bone (3) A scar (4) A haircut
Fill in the blank: Natural selection acts on _______ (individuals/populations), but evolution occurs in _______ (individuals/populations).
Fill in the blank: The ability of an organism to survive and reproduce in its environment is called _______.
Fill in the blank: The process by which humans breed plants or animals for certain traits is called _______ selection.
Fill in the blank: The process by which new species arise is called _______.
True or False: All members of a population are genetically identical.
True or False: Individuals evolve during their lifetime through natural selection.
True or False: Natural selection acts on the phenotype, not the genotype, of an organism.
True or False: Natural selection always leads to the evolution of new species.
