WorksheetsUnit 5 Review
Total questions: 25
Worksheet time: 5mins
The alleles for dimples are D, which causes the presence of dimples, and d, which results in the absence of dimples. An individual with the alleles Dd would
be considered homozygous for dimples.
not be able to pass on the d allele to her offspring.
not have dimples.
have dimples.
Scientists classify organisms into different groups. Which of the following tools could be used to classify an organism?
Punnett Square
Periodic table
dichotomous key
pie chart
Which of the following is determined by one or more genes?
both inherited traits and acquired traits
neither inherited traits nor acquired traits
inherited traits
acquired traits
A species of plant has red flowers. One member of the species sprouts and grows white flowers. What has most likely happened?
a mutation
selective breeding
natural selection
extinction
If a student’s mother and father can roll their tongues and each has two dominant alleles, what can be assumed about the student?
The student cannot roll his tongue.
The student can roll his tongue.
The student’s children will not be able to roll their tongues.
The student’s grandparents were not able to roll their tongues
The bones of a bird are hollow. This adaptation helps the bird to
fly
catch worms.
lay eggs.
swim.
Which structure in the nucleus contains genetic information?
cell wall
mitochondria
chloroplasts
chromosome
Which best explains why plants in a desert might have long thorns?
The thorns shade the plant.
The thorns prevent leaves from being eaten.
The thorns carry out photosynthesis.
The thorns hold the leaves out.
What is true of a chromosome in a cell?
It is found in the chloroplasts.
It is found in the cell wall.
It contains only one gene.
It contains hundreds of genes
Classification is the process of organizing living things into groups based on
similar characteristics.
differences in appearance.
similarities in behavior.
number of chromosomes.
In this model, what do the letters 'D' and 'd' represent?
Forms of genes
Chromosomes found in the nucleus
Sexual and asexual reproduction
Nuclei of different cells
What can you infer about the finches?
They are all one species.
They share the same niche
They eat different foods.
They have no common ancestors
Which of these traits helps a rose plant avoid being eaten by animals?
flowers
leaves
thorns
roots
Which of the following describes a bird?
an animal with wings, jointed legs, and antennae
an animal with fur that feeds its young milk
an animal that lives part of its life in water and part of its life on land
an animal that lays hard-shelled eggs, has a backbone and feathers, and flies
Which type of foot would most likely be found on birds that walk around in shallow water at a shoreline?
A
B
C
D
Which of the following is an example of natural selection?
A scientist inserts the genes of a scorpion into a cabbage plant, enabling the plant to kill pests by poison
A farmer crosses a long-living goat with a goat that produces lots of milk.
A population of light-colored and dark-colored moths becomes mainly dark-colored over time in response to environmental changes.
The last remaining member of species dies from disease.
The characteristics of modern dog breeds are the result of —
asexual reproduction
ecological succession
natural selection
selective breeding
The diagram shows a whale and a shark. What can you infer about the animals, based on their traits?
The whale lives in freshwater and the shark lives in saltwater.
The whale does not go underwater and the shark swims underwater
The whale gets oxygen from the air and the shark gets oxygen from the water.
The whale is an herbivore and the shark is a carnivore.
How does a xylem help a plant survive?
Removes impurities from the plant and put them into the soil
Keeps the plant standing upright
Pulls water and nutrients up the stem from the soil
Collects sunlight for the plant to use during photosynthesis
Why is it advantageous for organisms to have different, inheritable traits from each other?
To help organisms survive longer
To attract more reproductive mates
To allow organisms to live forever
To have xylem that look different
The nucleus of a cell contains —
cell membrane
chromosomes
organelles
mitochondria
Which of these finches would most likely be able to pick up and crack open hard seeds for use as food?
finch 1
finch 2
finch 3
finch 4
Of the above, the bird that is most suited to catching and swallowing small mammals, amphibians, and reptiles is —
bird a
bird b
bird c
bird d
Which of the following is an example of natural selection?
The last member of a species of trees dies out due to disease.
A dog learns how to sit and stay.
A cheetah that can run faster than other cheetahs is able to kill more prey and stay healthy enough to reproduce.
A bird migrates south in winter
Some fish do not have scales. What advantage do you think fish with scales might have over fish without scales?
Their scales keep scaly fish warmer
Scaly fish can bend more easily than fish without scales.
The colors in the scales help scaly fish attract more mates.
Scales form a sort of protective armor for scaly fish
