NEW
Font size
WorksheetsLS 3rd 9w FINAL REVIEW
Total questions: 25
Worksheet time: 2hrs 5mins
Which of these is MOST likely to increase the chances that a giraffe will survive in an environment that is changing quickly?
competing with other giraffes
living longer
producing offspring that are all very similar
having a lot of variation in the gene pool
According to Darwin, the variations among tortoises that he observed in the Galapagos Islands resulted from.
the passing down of acquired traits
use or disuse of their necks
natural mutations
natural selection
Which of these BEST describes the positive aspects of genetic variation within birds of paradise?
It guarantees that some birds will survive an environmental change
It happens even when the birds are isolated
It lets most organisms find the right mates.
The individual birds do not have to use as much energy to survive.
The cheetah has been listed as an endangered species since 1975. Which natural event has most likely led to this species being unable to adapt and becoming endangered?
climate change
a decrease in genetic diversity
a decrease in bad weather
an increase in predators
Which of these would be the LEAST important adaptation for human survival?
speaking
walking
hair color
having thumbs
A researcher cross-pollinates a watermelon plant that is resistant to bacteria with a watermelon plant that produces large fruit. This is an example of
selective breeding
genetic engineering
asexual reproduction
natural selection
Many farmers want their crops to produce greater amounts of plants than average. Which process would help the farmer develop plants with this ability?
geographical isolation
ecological succession
behavioral modification
selective breeding
Based on the dogs pictured in the photo, which characteristic do you think they are specifically bred for?
retrieving ability
coat length
size
color
Scientists are utilizing selective breeding to improve the health benefits of particular vegetables. Which statement BEST explains why improving these health benefits of vegetables by selective breeding is a positive thing to do
healthier vegetables require more types of resources to grow
vegetables that are selectively bred will absorb more nutrients from the soil they are planted in
an increase in the availability of healthier vegetables will decreases rates of malnutrition
the production of nutrients in foods from selectively bred vegetables will decrease the rate of disease in vegetables
Which is the BEST explanation for the physical differences between these two dogs?
the dogs ate different types of food
the dogs live in different environments
each type of dog was trained to do a specific job
each type of dog was bred for specific traits
Pugs sometimes become blind due to a recessive trait they inherit. For this reason, owners will not allow their dogs to have puppies if they are blind. Allowing only pugs that can see to produce offspring is an example of
sexual reproduction
learned behavior
selective breeding
crossbreeding
Abigaile keeps track of the different traits of the varieties of peaches in her orchard. She wants to grow more trees that make sweet, plump peaches for the cobbler competition next year. Which type of peach tree should Abigaile save seeds from?
the trees with the largest peaches
the trees with the tastiest peaches
the trees with the greatest number of seeds per peach
the trees with the greatest number of peaches per tree
Botanists are constantly trying to grow plans that can grow in areas that have little rain. How would this trait MOST LIKELY benefit farmers?
crops won't be affected by disease
crops can be grown in drier climates
crops can survive without having to be fertilized
crops can survive in areas that have fewer seasons
A worm population includes the same number of green and brown worms. Green worms are easier for birds to see and eat. Over time, the population begins to consist of only brown worms. The change in the color of worm population is a result of
limited resources
natural selection
geographic isolation
climate change
Which is the BEST description of the theory of natural selection?
it guarantees the survival of a species
it increases the size of a population
it requires the individual to be identical
it happens over a long period of time
A ladybug population includes the same number of dark orange and red ladybugs. Red ladybugs are easier for predators to see and eat. Over time, the population begins to have more of only the dark orange lady bugs. This change in color of the ladybug population is a result of
geography
climate
natural selection
limited water and food
In 1990 an insecticide was used to kill pests on fruit trees. Most of the trees ended up dying but some lived. These surviving trees contributed to an increase in their population later on by
competing with other tree species
the trees learning how to avoid the insecticide
passing the gene for insecticide resistance on to offspring
migrating
Several kinds of rodents live in a small forest. A fire destroys most of the trees that feed the rodents & house them. Which kind of rodent is most likely going to survive in the forest?
the rodents that have the largest families
the rodents with the largest claws
the rodents that have the highest probability of adapting
the rodents that can run the fastest
Arctic rabbits are well adapted to the Arctic environment because of their white fur. Which of these best describes why arctic rabbits having white fur was naturally selected over other fur colors?
arctic rabbits choose mates with the whitest fur
arctic rabbits with white fur camouflage into the snow better
the white fur captures heat well
white fur attracts prey
Newly hatched clown fish eggs are easy prey for other underwater animals. Which is an important ability of clown fish for better survival of their offspring?
the relationship they have with sea anemones
laying hundreds of eggs so that a few will survive
producing a poison that makes them taste bad
spines on their backs that keep predators away
The tiger population around the world has decreased due to poaching and loss of habitat. The surviving populations are found to have similar alleles. Which factor is endangering the species' survival the MOST?
harmful mutations
shrinking gene pool
decreased competition
increase in adaptation
One fox runs faster than other foxes in its population How will this MOST likely benefit the fox?
by keeping the fox warm in winter
by helping the fox blend in
by helping the fox find more food
by making it easier for the fox to escape predators
WHy is it important for members of a species to be diverse?
high levels of competition are ensured
increased availability of ecosystem resources
variety of reproductive methods for species are ensured
chances of survival under varying conditions are increased
WHich will MOST likely increase the survival rate of an organism living in an ecosystem that is going through rapid change?
strong competiton
long life span
having identical offspring
having a diverse gene pol
Which is the MOST important for increasing the survival rate in human beings?
eye color
ability to speak
ability to walk
having 10 fingers
