No student devices needed. Know more
58 questions
Xylem is a plant tissue made up of elongated cells stacked end to end the length of the plant’s stem. Which function is xylem specifically adapted to perform in plants?
Help prevent water loss.
Exchange gases with the atmosphere.
Capture sunlight for photosynthesis.
Transport water from roots to leaves.
Mountain lions are large cats and the top predator in their habitat. A population of mountain lions may vary in several characteristics. If prey becomes more scarce, which variation would provide an advantage to the individuals that possessed it?
A spotted coat.
Short fur.
Abundant whiskers.
Long legs.
Leopard seals are animals adapted to survive in the freezing conditions of Antarctica. Individual leopard seals vary in their different traits. Which of the following variations would give a leopard seal the greatest chance of surviving in its harsh environment?
More spots on their coat.
Thicker layer of blubber.
More, elongated head.
Wider, flatter teeth.
A genetic characteristic that allows an organism to survive and reproduce:
Adaptation.
Natural Selection.
Selective Breeding.
Hybridization.
The process where organisms best fit for the environment are more likely to survive and reproduce:
Natural Selection.
Adaptations.
Selective Breeding.
Hybridization.
The process by which humans take control of the breeding process to choose favorable traits to be passed on:
Selective Breeding.
Natural Selection.
Adaptations.
Hybridization.
A characteristic of some animals to enter a state of deep sleep during the winter months:
Hibernation.
Natural Selection.
Hybridization.
Adaptation.
Which internal structure is an adaptation that provided organisms with the function to perform gas exchange on land?
Gills.
Lungs.
Hollow Bones.
Chambered Heart.
Galapagos finches are birds that live on islands off the coast of South America. The finches on the various islands are very different from each other. As a result of the different food resources on the islands, which of the following structures of the Galapagos finches experienced the greatest change through natural selection?
Head size.
Eye shape.
Feather color.
Beak shape.
Cactus has spines instead of leaves. The spines reduces water loss through the stomata.
Structural
Behavioral
Webbed Feet
Structural Adaptation
Behavioral Adaptation
Migrating
Structural Adaptation
Behavioral Adaptation
Camouflage
Structural Adaptation
Behavioral Adaptation
Wings on Birds
Structural Adaptation
Behavioral Adaptation
Hunting
Structural Adaptation
Behavioral Adaptation
Deer Antlers
Structural Adaptation
Behavioral Adaptation
Giraffe's Long Neck
Structural Adaptation
Behavioral Adaptation
Building a Nest
Structural Adaptation
Behavioral Adaptation
Beavers Building a Dam
Structural Adaptation
Behavioral Adaptation
Playing Dead
Structural Adaptation
Behavioral Adaptation
A specific characteristic that varies from one individual to another is?
an allele
a gene
a trait
a chromosome
A bison has teeth that ate adapted for grazing or eating grasses. Suppose a disease were to kill off all the grasses in a region where the bison live. What would likely happen to the bison?
They would adapt to eating a different kind of plant.
They would evolve into a new species
They would eventually die from lack of food
They would not be affected.
Which of the following is an example of selective breeding?
Flowers growing large, yellow petals.
Two organisms reproducing.
An organism adapting to it's environment.
Scientists cross-pollinating two to plants together.
Worms do not have a backbone. This adaptation is called being-
Vertebrate.
Invertebrate.
Sleek.
Slender.
Which of the following are ways to conserve heat?
Having a thick layer of blubber.
Huddling together.
Running.
Having thick fur.
An animal who is strongly muscled, has thick skin, and extra hair has been bred for specific reasons.
Protecting livestock.
Digging.
Retrieving.
Protecting homes.
What is a physical adaptation?
Hibernating.
Thick fur.
Migrating.
Fight or flight.
What is a behavioral adaptation?
Hibernating.
Thick fur.
Thick blubber.
Gills.
Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin. This ability is known as
natural selection
imitation
mimicry
camouflage
Crickets communicate with other crickets by chirping. Crickets who cannot make a sound are less likely to find a mate and reproduce. For this reason, there are few crickets that cannot make a sound. This is an example of
learned behavior
genetic replication
natural selection
selective breeding
A spiny cactus is growing very successfully in an Arizona desert. This plant has made adaptations to its native environment that make it successful in harsh conditions. Three adaptations that the spiny cactus has are
broad leaves, deep roots, sharp spines
waxy leaves or pods, and sharp spines to preserve moisture; a large, shallow root system
sharp spines, lots of small leaves that taste bad, and deep roots
large, shallow root system, sharp spines, thick trunk
Charles Darwin observed the finches on the island and noticed that each species was well suited to the life it led. For example, finches that ate insects had sharp, slender beaks; finches that ate seeds had strong, wide beaks. According to the above information and image, beak shape in these finches is an example of
adaptation
simulation
competition
environmentalism
Humans have selected the traits of dogs in order to use the dogs for specific jobs. Which dog pictured below was most likely bred to carry large amounts of mass in extremely cold environments?
Some moths have a brown body and brown wings, while other moths have a white body and white wings. The brown moths often rest on the bark of pine trees, and the white moths rest on the white bark of aspen trees. If all the aspen trees in an area were cut down, what would be the likely result?
More brown moths will survive than white moths because predators will be able to spot the white moths more easily. Over time, there will be no white moths in the area.
The white moths will grow brown wings in order to blend in with the environment. Over time, there will be no white moths in the area.
The white moths will migrate to a new area where aspen trees are found. The brown moths will remain in the original area. The number of brown moths will increase.
The white moths will rest on the remaining trees. Over time, they will become brown moths, so the number of moths will increase.
One type of horse is a very large, heavy animal called a Clydesdale. What kind of work would such a large, heavy animal be expected to do?
be easy for small children to ride
pull or carry a very heavy load
run a long distance without tiring
run very fast in races
Based on the dichotomous key, in what order should this insect be classified
Mantodea
Raphidioptera
Coleoptera
Lepidoptera
Explore all questions with a free account