Author: Biology Junction Team

Insects

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True/False
Indicate whether the sentence or statement is true or false.
1.
A flying insect carries pollen from one flower to pollinate other flowers of different species.
2.
Insects comprise the only group of invertebrates whose members are primarily terrestrial.
3.
Insects were the first animals to evolve wings.
4.
Flight enabled insects to search Earth’s surface for food, mates, and nesting sites.
5.
A major factor in the evolutionary success of insects is their ability to move to and survive in new environments.
6.
Insects destroy not only crops but also wood buildings and clothing.
7.
Butterflies undergo incomplete metamorphosis.
8.
Insects use pheromones, sounds, and light to attract mates.
9.
The honeybee’s round dance gives complete location information about a food source.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
10.
From fossils, we know that insects were the first animals to evolve
a.
pincers on their front legs.
c.
jointed legs.
b.
stingers at the end of their tails.
d.
wings.
11.
The most diverse group of animals on Earth are the
a.
reptiles.
c.
insects.
b.
mammals.
d.
amphibians.
12.
Which of the following is not a characteristic of most insects?
a.
wings
c.
small size
b.
three body regions
d.
abdomen with three pairs of legs
13.
While insects destroy crops grown for human consumption, they also contribute to crop production by
a.
serving as food for many animals.
b.
pollinating crop plants.
c.
dying in the soil, and leaving behind nutrients.
d.
stimulating crop plants to grow faster.
14.
Malpighian tubules in insects
a.
remove wastes.
c.
carry Malpighian fluid.
b.
carry blood.
d.
are important in respiration.

      insects_files/i0140000.jpg
15.
Refer to the illustration above. Which of the organisms in the diagrams has a chitinous exoskeleton?
a.
Organism “A”
c.
Organism “C”
b.
Organism “B”
d.
Organism “D”

      insects_files/i0160000.jpg
16.
Refer to the illustration above. Mandibles are attached to the structure labeled
a.
“A.”
c.
“C.”
b.
“B.”
d.
“D.”
17.
Refer to the illustration above. The structure labeled “C” is called the
a.
diptera.
c.
boll.
b.
thorax.
d.
abdomen.
18.
Pheromones are used by ants to
a.
guide members of a colony back to their own nest.
b.
determine which ants will become queens of future colonies.
c.
ensure that females mate with only one male.
d.
warn members of a colony of adverse environmental conditions.
19.
Which of the following are the reproductive members of a honeybee colony?
a.
drones
c.
workers
b.
queen
d.
a and b
20.
Which of the following is the accepted explanation for the existence of sterile female worker bees?
a.
Because they are sterile, they do not have to use energy to produce eggs and therefore can use energy to collect food for other bees.
b.
Workers become sterile when they leave the nest to obtain food and are exposed to toxic substances.
c.
Workers pass on a lot of their own genes by helping their fertile sisters to survive and reproduce.
d.
Workers can become fertile females if they are fed queen factor.

 
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Biology Graph Interpretation Quiz with Answer Explanations

Biology Foundations and Lab Skills Teaching Resources · High school biology; AP extensions where noted.

Use this original formative assessment after graphing practice. Students read values, compare changes, and distinguish a pattern from a causal explanation. Materials: the graphs or data below, paper, and a calculator if appropriate. Prerequisites: axes, units, line graphs, bar charts, and scatterplots.

Graph data and accessible alternative

The three datasets are simulated. The tables provide the complete values for students who use a screen reader or need a text alternative.

Graph preparation: construct the three graphs from the data tables below, then answer the questions. Use a line graph for A, bars for B, and a scatterplot for C. No external image is required.

Graph A: time (days)Height (cm)
00
24
47
69
810
Graph B: conditionGerminated seeds out of 20
A8
B14
C11
Graph C: leaf length (cm)Leaf width (cm)
31.5
42.0
52.1
63.0
73.2
84.0

Questions

  1. In graph A, which variable is on each axis, and what are its units?
  2. How tall is the seedling on day 4?
  3. Which two-day interval shows the greatest increase? Calculate that interval’s average increase per day.
  4. What is the average increase per day over the entire day 0–8 record? Does that mean the seedling increased by the same amount every day?
  5. In graph B, calculate the germination percentage for each condition.
  6. By how many percentage points does B exceed A? What additional design information is needed before claiming a treatment caused the difference?
  7. In graph C, describe the association. Would joining points in collection order clarify it?
  8. Does graph C establish that increased leaf length causes increased width? Explain.

Answer explanations

  1. Horizontal: time in days. Vertical: height in centimeters. Axis placement does not by itself prove a causal relationship.
  2. 7 cm, read at day 4.
  3. Day 0–2: (4 − 0) ÷ (2 − 0) = 2 cm per day, the largest interval average.
  4. (10 − 0) ÷ (8 − 0) = 1.25 cm per day. This overall average does not imply a constant daily rate; the interval increases differ, and no daily values between the plotted times were measured in the dataset.
  5. A: 8/20 = 40%; B: 14/20 = 70%; C: 11/20 = 55%.
  6. 70 − 40 = 30 percentage points. Need treatment definitions, comparable conditions, independent replication, and the assignment method to evaluate a causal interpretation.
  7. Longer leaves tend to be wider. Joining independent leaf measurements in arbitrary collection order would imply an order that the data do not have.
  8. No. This observational association does not identify a mechanism or rule out other influences.

Teaching notes: Award credit for supported reasoning and units, not a memorized phrase. Ask students to correct one misleading statement after review. Provide large-print graphs, oral explanation, or table-based access as needed. These explanations apply only to the new questions above; the former embedded quiz and placeholder are replaced.

Related teaching resources

Sources and further reading

Darwinian Evolution – PreAP Biology

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Darwinian Evolution – PreAP Biology
  

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 1.
Which of the following are examples of fossils?
a.
 shells or old bones
b.
 any traces of dead organisms
c.
 insects trapped in tree sap
d.
 All of the above
 
 2.
Animal fossils may form when
a.
 an animal is buried by sediment.
b.
 an animal is buried on the ocean floor, in swamps, in mud, or in tar pits.
c.
 an animal’s tissue is replaced by harder minerals.
d.
 All of the above
 
 3.
Darwin drew ideas for his theory from observations of organisms on
a.
 the Samoan Islands.
b.
 Manhattan Island.
c.
 the Hawaiian Islands.
d.
 the Galápagos Islands.
 
 4.
The species of finches that Darwin observed differed in the shape of their beaks. According to Darwin, all of these species probably
a.
 had a common ancestor.
b.
 had migrated from Africa.
c.
 had descended from similar birds in Africa.
d.
 ate the same diet.
 
 5.
Darwin thought that the animals of the Galápagos Islands were similar to those of the nearby coast of South America because
a.
 the animals’ ancestors had migrated from South America to the Galápagos Islands.
b.
 the animals had all been brought to the islands by humans.
c.
 the islands had slowly drifted away from the mainland.
d.
 the animals in both places had evolved in nearly identical environments
 
 6.
According to Darwin, evolution occurs
a.
 only through artificial selection.
b.
 during half-life periods of 5,715 years.
c.
 because of natural selection.
d.
 so rapidly that it can be observed easily.
 
 7.
When Darwin published his first book about evolution, he included all of the following ideas except
a.
 the idea that species change slowly over time.
b.
 the idea that some organisms reproduce at a greater rate than others.
c.
 the idea that species are permanent and unchanging.
d.
 the idea that some species become better suited to their environment than others.
 
 8.
The major idea that Darwin presented in his book The Origin of Species was that
a.
 species change over time and never compete with each other.
b.
 animals change, but plants remain the same over time.
c.
 species may change in small ways but cannot give rise to new species.
d.
 species change over time by natural selection.
 
 9.
Natural selection is the process by which
a.
 the age of selected fossils is calculated.
b.
 organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment.
c.
 acquired traits are passed on from one generation to the next.
d.
 All of the above
 
 10.
Populations of the same species living in different places
a.
 do not vary.
b.
 always show balancing selection.
c.
 are genetically identical to each other.
d.
 become increasingly different as each population becomes adapted to its own environment.
 
 11.
Scarcity of resources and a growing population are most likely to result in
a.
 decreased homology.
b.
 increased genetic variation.
c.
 increased competition.
d.
 convergent evolution.
 
   
 
nar001-1.jpg
 
 12.
Refer to the illustration above. An analysis of DNA from these organisms would indicate that
a.
 they have identical DNA.
b.
 they all have the same number of bones.
c.
 their nucleotide sequences show many similarities.
d.
 they all have the same number of chromosomes.
 
 13.
Refer to the illustration above. The similarity of these structures is one form of evidence that the organisms
a.
 share a common ancestor.
b.
 all grow at different rates.
c.
 evolved instantaneously.
d.
 live for a long time.
 
 14.
Refer to the illustration above. The bones labeled “X” can be referred to as
a.
 vestigial structures.
b.
 sequential structures.
c.
 homologous structures.
d.
 fossil structures.
 
 15.
Which of the following is most likely a vestigial structure?
a.
 the human tailbone
c.
 flower color
b.
 the beak of a finch
d.
 a fossil of a snail
 
 16.
Homologous structures in organisms provide evidence that the organisms
a.
 share a common ancestor.
b.
 must have lived at different times.
c.
 have a skeletal structure.
d.
 are now extinct.
 
 17.
Anatomical structures that appear to be derived from a functional structure in an ancestor, but that currently do not serve an important function, are called
a.
 inorganic.
c.
 fossilized.
b.
 mutated.
d.
 vestigial.
 
 18.
The beak of a bird and the beak of a giant squid evolved independently and serve the same function. The beaks are
a.
 divergent structures.
c.
 analogous structures.
b.
 homologous structures.
d.
 hybrid structures.
 
 19.
Evidence that evolution occurs includes all of the following except
a.
 acquired characteristics.
b.
 similarities and differences in proteins and DNA sequences between organisms.
c.
 the fossil record.
d.
 homologous structures among different organisms.
 
 20.

Cytochrome c is a protein that is involved in cellular respiration in all eukaryotic organisms. Human cytochrome c contains 104 amino acids. The following table compares human cytochrome c with cytochrome c from a number of other organisms.

 

Organism		 Number of cytochrome c amino acids
that differ from human cytochrome c amino acids
Chickens
18
Chimpanzees
0
Dogs
13
Rattlesnakes
20
Rhesus monkeys
1
Yeasts
56
   

Which of the following is not a valid inference from these data?

a.
 Chimpanzees are more closely related to humans than yeasts are.
b.
 The cytochrome c of chimpanzees differs from that of rhesus monkeys by only one amino acid.
c.
 Dogs are more closely related to humans than chickens are.
d.
 All of the proteins produced by chimpanzees and humans are identical.
 
 21.
The accumulation of differences between populations that once formed a single population is called
a.
 coevolution.
b.
 adaptation.
c.
 divergent evolution.
d.
 cumulative differentiation.
 
 22.
Over millions of years, plants and their pollinators have
a.
 coevolved.
c.
 become parasites.
b.
 crossbred.
d.
 become competitive.
 
 23.

mc023-1.jpg

Refer to the illustration above. While the shark and dolphin are similar in appearance, dolphins evolved from ancestors that were very different from sharks. The current similarity between sharks and dolphins is an example of

a.
 coevolution.
c.
 convergent evolution.
b.
 biogeography.
d.
 divergent evolution.
 
 24.
What is the idea developed by Charles Lyell which states that the geologic processes that shaped Earth in the past continue to operate in the same way today?
a.
 inheritance of acquired characteristics
b.
 catastrophism
c.
 uniformitarianism
d.
 descent with modification
 
 25.
The idea of inheritance of acquitted characteristics was proposed by
a.
 Charles Darwin.
c.
 Jean-Baptiste Lamarck.
b.
 George Cuvier.
d.
 Charles Lyell.
 
 26.
Which of the following describes a population?
a.
 dogs and cats living in Austin, Texas
b.
 four species of fish living in a pond
c.
 dogwood trees in Middletown, Connecticut
d.
 roses and tulips in a garden
 
 27.
The movement of alleles into or out of a population due to migration is called
a.
 mutation.
c.
 nonrandom mating.
b.
 gene flow.
d.
 natural selection.
 
 28.
What type of population is most susceptible to loss of genetic variability as a result of genetic drift?
a.
 large populations
b.
 medium-sized populations
c.
 small populations
d.
 populations that fluctuate in size
 
 29.
A change in the frequency of a particular gene in one direction in a population is called
a.
 directional selection.
b.
 acquired variation.
c.
 chromosome drift.
d.
 stabilizing selection.
 
 30.
The type of selection that may eliminate intermediate phenotypes is
a.
 direction selection.
b.
 disruptive selection.
c.
 polygenic selection.
d.
 stabilizing selection.
 
 31.
Directional selection tends to eliminate
a.
 both extremes in a range of phenotypes.
b.
 one extreme in a range of phenotypes.
c.
 intermediate phenotypes.
d.
 None of the above; it causes new phenotypes to form.
 
 32.
The large, brightly colored tail feathers of the male peacock are valuable to him because
a.
 they attract potential predators.
b.
 they warn off potential competitors for mates.
c.
 they attract potential mates.
d.
 they attract people who provide them with food.
 
 33.
The hypothesis that evolution occurs at an irregular rate through geologic time is known as
a.
 directional evolution.
b.
 directional equilibrium.
c.
 punctuated equilibrium.
d.
 punctuated evolution.
 

 

 
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Flat and Round Worms

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Flat and Round Worms

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Planarians have a branched digestive tract with both a mouth and an anus.
2.
Most flatworms are not parasitic.
3.
Tapeworms absorb food from their host’s intestine directly through their skin.
4.
Humans can avoid trichinosis by wearing shoes when they walk through fields.
5.
Rotifers have a distinct head end with a mouth and a distinct tail end that has an opening through which substances from the digestive, reproductive, and excretory systems exit the body.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
6.
Flatworms can reproduce asexually by
a.
fission.
c.
producing polyps.
b.
forming larvae.
d.
exchanging both sperm and eggs.
7.
Which of the following is not found in flatworms?
a.
a head
c.
bilateral symmetry
b.
a circulatory system
d.
a nervous system
8.
Flatworms have no need for circulatory and respiratory systems because
a.
the digestive system performs these functions.
b.
their cells are close to the animal’s exterior surface.
c.
the spherical body shape allows diffusion of materials into tissues.
d.
the coelom is bathed in blood and oxygen.
9.
Schistosomiasis is a disease caused by a
a.
roundworm.
c.
cestode.
b.
trematode.
d.
planarian.
10.
turbellarians : free living ::
a.
planaria : parasitic
c.
cestodes : free living
b.
tapeworms : free living
d.
flukes : parasitic
11.
Which of the following statements about tapeworms is false?
a.
They can infect a person who eats improperly cooked beef.
b.
They belong to the genus Schistosoma.
c.
They can grow to be large in human intestines.
d.
These flatworms do not have a digestive system.
12.
To which phylum do roundworms belong?
a.
Annelida
c.
Platyhelminthes
b.
Nematoda
d.
Arthropoda
13.
Roundworms have a fluid-filled cavity between the gut and body wall called a
a.
coelom.
c.
digestive system.
b.
pseudocoelom.
d.
None of the above
14.
Pseudocoelomates
a.
must move rapidly to enhance diffusion of nutrients.
b.
must be very small or have body shapes with short distances between organs and the body surface.
c.
must have a circulatory system.
d.
All of the above
15.
The first organisms to develop an internal body cavity were the
a.
flatworms.
c.
mollusks.
b.
nematodes.
d.
arthropods.
16.
All of the following groups of invertebrates are coelomates, except
a.
annelids.
c.
mollusks.
b.
echinoderms.
d.
nematodes.
17.
The evolution of body cavities was important because
a.
fluids within the body cavity aid in circulation of materials from one part of the body to another.
b.
fluids in the cavity make the body rigid and offer resistance to muscles, aiding in movement.
c.
organs are better able to function if they can move freely within the body cavity.
d.
All of the above
18.
The nematode Ascaris lumbricoides infects humans, spending most of its adult life inside the intestines of its host. To be infected, a person must
a.
consume the nematode’s eggs.
c.
sit on an infested toilet seat.
b.
walk barefoot on infested soil.
d.
All of the above
19.
A type of roundworm that lives a parasitic life is
a.
Ascaris.
c.
Trichinella.
b.
Necator.
d.
All of the above
20.
Rotifers eliminate excess water that they collect from their freshwater environment by
a.
diffusion.
c.
flame cells and excretory tubules.
b.
kidneys.
d.
a mastax.

 
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Fish

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Fish

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Lobe-finned fishes were the ancestors of amphibians.
2.
Small, jawed fishes are the first vertebrates for which there is fossil evidence.
3.
Fishes and amphibians first appeared on Earth during the Cambrian period, about 550 million years ago.
4.
A fish’s gills would collapse on land.
5.
Since they live in salt water, marine fishes do not have a problem maintaining the proper balance of water and salt in their body.
6.
The first fishes to develop jaws were called spiny fishes, members of the class Acanthodia.
7.
Sharks have good vision and can detect electromagnetic fields coming from prey animals.
8.
Members of the class Osteichthyes have skeletons of cartilage.
9.
Bony fishes have a swim bladder.
10.
In order to fill their swim bladders, bony fishes have to come to the surface to gulp air.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
11.
Which of the following would not be an advantage of the endoskeleton found in all vertebrates?
a.
It protects internal body structures.
b.
It aids in movement.
c.
It helps prevent desiccation in terrestrial vertebrates.
d.
It provides structural support in terrestrial vertebrates.
12.
The urinary bladder and kidneys make up the ____ of a fish.
a.
respiratory system.
c.
excretory system.
b.
digestive system.
d.
circulatory system.
13.
The first vertebrates
a.
were jawless fishes.
b.
had thick, bony plates that covered their bodies.
c.
had no well-developed vertebral column.
d.
All of the above
14.
placoderms : armor ::
a.
bony fishes : cartilaginous skeleton
b.
sharks : no teeth
c.
lampreys : jaws
d.
sharks and bony fishes : streamlined bodies
15.
bony fishes : stronger muscles ::
a.
bony fishes : lungs
c.
sharks : ray fins
b.
sharks : bony skeleton
d.
sharks : rows of teeth
16.
Which of the following senses is not used by sharks to detect prey?
a.
olfaction
c.
lateral-line system
b.
vision
d.
touch
17.
The eggs of many species of sharks
a.
are released from the mother’s body before fertilization.
b.
are released from the mother’s body after fertilization.
c.
are released from the mother’s body after developing into young embryos.
d.
hatch inside the mother’s body, where the young sharks continue to grow.
18.
Members of the class Osteichthyes
a.
have skeletons made of bone.
c.
include the rays and skates.
b.
do not have jaws.
d.
All of the above
19.
A collection chamber that reduces the resistance of blood flow into the heart of a fish is called the
a.
sinus venosus.
c.
conus arteriosus.
b.
ventricle.
d.
atrium.
20.
The countercurrent flow of water and blood found in the gills of fishes
a.
allows blood and water to flow in the same direction.
b.
ensures that oxygen diffuses into the blood over the whole length of the blood vessels in the gills.
c.
results in an uneven supply of oxygen reaching the blood vessels in the gills.
d.
hampers the diffusion of oxygen and carbon dioxide between the blood and the water.

 
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