Classification and Diversity
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The Five Kingdoms
SubtopicThe Five Kingdoms under Classification and Diversity for Grade 7 IB.
Preview questions (no answers)
- 1.
Which taxon is used to group several related Genuses together?
A.Order
B.Phylum
C.Family
D.Kingdom
- 2.
To which kingdom does the organism belong, which can both photosynthesize and eat other organisms?
A.Plantae
B.Protista
C.Animalia
D.Fungi
- 3.
Which of these is a characteristic of all living things in the five kingdoms?
A.The ability to move
B.The ability to breathe oxygen
C.The ability to reproduce
D.The ability to make food
- 4.
Members of Kingdom Monera reproduce mostly through which process?
A.Seeds
B.Spores
C.Binary Fission
D.Pollination
- 5.
Which of these is the correct scientific name for a human using binomial nomenclature?
A.Homo Sapiens
B.homo sapiens
C.Homo sapiens
D.homo Sapiens
- 6.
What is the primary function of the cell wall in Kingdom Plantae?
A.To control what enters and leaves the cell
B.To provide structural support and protection
C.To capture sunlight for energy
D.To produce proteins for the cell
- 7.
If an organism is described as 'multicellular, heterotrophic, and its cells have a nucleus but no cell walls,' it must belong to which kingdom?
A.Kingdom Fungi
B.Kingdom Protista
C.Kingdom Animalia
D.Kingdom Monera
- 8.
Why is the use of 'Common Names' (like 'Blue Jay') often avoided in scientific classification?
A.Common names are too difficult to translate into Latin.
B.Common names can vary by region and language, leading to confusion.
C.Common names are only used for extinct species.
D.Common names do not allow for the use of italics.
- 9.
Which feature of the Paramecium (a protist) allows it to maintain water balance in a freshwater environment?
A.The cell wall
B.The contractile vacuole
C.The chloroplast
D.The flagellum
- 10.
In the five-kingdom system, which kingdom is characterized by organisms that are almost exclusively multicellular, autotrophic, and have cells with large central vacuoles?
A.Kingdom Monera
B.Kingdom Protista
C.Kingdom Plantae
D.Kingdom Animalia
Download the worksheet for Classification and Diversity - The Five Kingdoms to practice offline. It includes additional chapter-level practice questions.
Linnaean Classification
SubtopicLinnaean Classification under Classification and Diversity for Grade 7 IB.
Preview questions (no answers)
- 1.
A group of related Genuses (Genera) makes up which level?
A.Family
B.Species
C.Phylum
D.Kingdom
- 2.
Which of these is the correct scientific name for a lion, following all conventions?
A.Panthera Leo
B.C.panthera leo
D.PANTHERA LEO
- 3.
If you are using a classification system and move from Class to Phylum, are you becoming more specific or more general?
A.More specific
B.More general
C.It stays the same
D.Classification does not work that way
- 4.
Which level of classification is described as a group of related Phyla?
A.Kingdom
B.Class
C.Order
D.Family
- 5.
An organism is multicellular, autotrophic, and has specialized tissues. It belongs to the Kingdom:
A.Animalia
B.Fungi
C.Plantae
D.Protista
- 6.
If you were to create a dichotomous key to identify different types of fruit, which of the following would be the best first question?
A.Is the fruit delicious?
B.Is the fruit red or not red?
C.Does the fruit have seeds on the inside or outside?
D.Is the fruit expensive at the store?
- 7.
Which of the following is true about the Kingdom Monera in older five-kingdom classification systems?
A.It included all multicellular organisms.
B.It was split into Eubacteria and Archaebacteria in later systems.
C.It only included organisms that lived in water.
D.It was the first kingdom to include eukaryotic cells.
- 8.
In a dichotomous key, what is the purpose of having two contrasting statements at each step?
A.To narrow down the possibilities by excluding groups that don't match.
B.To ensure that all organisms in a Phylum look identical.
C.To allow for the discovery of new Kingdoms.
D.To provide a list of all scientific names in alphabetical order.
- 9.
The term 'Arthropoda' represents which level of classification?
A.Phylum
B.Class
C.Order
D.Kingdom
- 10.
An organism is unicellular, has a nucleus, but also has chloroplasts and a flagellum. This 'mix' of traits makes it difficult to classify into traditional 'Plant' or 'Animal' kingdoms. This organism likely belongs to:
A.Kingdom Protista
B.Kingdom Fungi
C.Kingdom Monera
D.Domain Archaea
Download the worksheet for Classification and Diversity - Linnaean Classification to practice offline. It includes additional chapter-level practice questions.
Using Dichotomous Keys
SubtopicUsing Dichotomous Keys under Classification and Diversity for Grade 7 IB.
Preview questions (no answers)
- 1.
Which of these is a common 'branching point' in an animal key?
A.Symmetry (radial vs. bilateral)
B.Popularity (famous vs. not famous)
C.Price (expensive vs. cheap)
D.Mood (angry vs. calm)
- 2.
What should you do if you finish a key and the result is clearly wrong for your specimen?
A.Change your specimen to match the key
B.Restart the key and check for mistakes in your choices
C.Assume the key is broken and throw it away
D.Pick the name alphabetically closest to your guess
- 3.
If a dichotomous key for trees uses 'needle-like leaves' vs. 'broad leaves,' which group includes pine trees?
A.Broad leaves
B.Needle-like leaves
C.No leaves
D.Flowering leaves
- 4.
A key asks if an organism is 'autotrophic' or 'heterotrophic.' What is it distinguishing?
A.How the organism gets its food
B.How the organism moves
C.The color of the organism
D.The size of the organism
- 5.
Which step is always the first step when using any dichotomous key?
A.Read the very last couplet
B.Look at the organism and then start at Step 1a/1b
C.Identify the genus of the organism first
D.Count the total number of species in the book
- 6.
When using a dichotomous key for minerals, what would '1a. Scratches glass' and '1b. Does not scratch glass' test for?
A.Color
B.Hardness
C.Luster
D.Density
- 7.
A student identifies a bird as a 'Blue Jay' using a key. What level of classification is 'Blue Jay' likely representing in this context?
A.The Kingdom
B.The Phylum
C.The Common Name for a Species
D.The Domain
- 8.
Why do biological dichotomous keys usually focus on 'morphological' (structural) traits rather than 'behavioral' traits?
A.Behavior is the same for all animals.
B.Structural traits can be observed even if the specimen is dead or preserved, whereas behavior requires the living organism.
C.Behavior is easier to observe than structure.
D.Morphology is not used by real scientists.
- 9.
A researcher is using a key for identifying shrubs. Step 2a: 'Leaves are opposite'; Step 2b: 'Leaves are alternate'. The specimen has leaves arranged in a spiral. Which path is the most likely correct scientific interpretation?
A.Opposite, because a spiral is just a tight opposite arrangement.
B.Alternate, because a spiral arrangement means only one leaf per node, which is the definition of alternate.
C.Neither, the key is invalid for this shrub.
D.Both, the student should follow both paths.
- 10.
In a dichotomous key for classifying different 'classes' of vertebrates, which couplet would be most effective at the very beginning?
A.1a. Has scales; 1b. Has no scales
B.1a. Produces milk for young; 1b. Does not produce milk for young
C.1a. Possesses a backbone; 1b. Does not possess a backbone
D.1a. Breathes with lungs; 1b. Breathes with gills
Download the worksheet for Classification and Diversity - Using Dichotomous Keys to practice offline. It includes additional chapter-level practice questions.
Variation within Species
SubtopicVariation within Species under Classification and Diversity for Grade 7 IB.
Preview questions (no answers)
- 1.
Which of these tools would be most appropriate for collecting data on continuous variation in a classroom?
A.A tally chart for eye colors
B.A ruler to measure heights
C.A list of students who can roll their tongues
D.A group of students with or without earlobes
- 2.
In a field of wheat, what is a common example of variation?
A.The height of the wheat stalks
B.The number of grains on each ear of wheat
C.The shade of green of the leaves
D.All of the above
- 3.
Why do some people have darker skin tones than others?
A.Only because they stay in the sun longer
B.Only because their parents have dark skin
C.A combination of their genetics and their exposure to UV light
D.Because they eat different foods
- 4.
Which of these is a discrete category of variation rather than a measurement on a scale?
A.Handedness (being left-handed or right-handed)
B.Arm length
C.Running speed
D.Weight
- 5.
Identical twins are useful for studying variation because:
A.They have different DNA, so we can see environmental effects
B.They have the same DNA, so any differences must be environmental
C.They are the only species that shows no variation
D.They are not actually members of the same species
- 6.
If you were to measure the 'span' of a bird's wings in a large population, the resulting graph would likely be a:
A.Bar graph with 2 bars
B.Histogram showing a curve
C.Pie chart with 4 segments
D.Straight line starting from zero
- 7.
Which of the following traits is NOT affected by environmental factors?
A.The yield of wheat in a field
B.A person's natural eye color
C.The height of a person
D.The mass of a domestic cat
- 8.
Which of the following would be the most effective way to determine if the variation in the number of spots on a ladybug is inherited?
A.Counting the spots on 1,000 random ladybugs in a field.
B.Raising ladybugs with different numbers of spots in identical conditions and breeding them.
C.Changing the diet of the ladybugs to see if the number of spots changes.
D.Comparing the number of spots on ladybugs from two different countries.
- 9.
How does 'polygenic inheritance' contribute to continuous variation?
A.By ensuring that only one phenotype is possible.
B.By allowing many different genes to each contribute a small amount to the final phenotype.
C.By preventing the environment from affecting the trait.
D.By causing the DNA to break into many small pieces.
- 10.
A researcher finds that a species of fish has a 'split' distribution in tail size: very small or very large, with almost no medium-sized tails. This suggests that:
A.The medium-sized tail is the most successful variation.
B.There are two different selective pressures favoring the extremes of the variation.
C.Tail size is a continuous trait that has not finished evolving yet.
D.The fish are actually two different species that cannot interbreed.
Download the worksheet for Classification and Diversity - Variation within Species to practice offline. It includes additional chapter-level practice questions.
Adaptations and Survival
SubtopicAdaptations and Survival under Classification and Diversity for Grade 7 IB.
Preview questions (no answers)
- 1.
In classification, what is the largest and most general group?
A.Species
B.Family
C.Kingdom
D.Order
- 2.
An organism that produces its own food using energy from the sun is known as an:
A.Autotroph
B.Heterotroph
C.Decomposer
D.Scavenger
- 3.
What type of adaptation is a skunk's ability to spray a foul-smelling liquid?
A.Structural
B.Behavioral
C.Physiological
D.Geological
- 4.
Some animals in the desert are only active at night to avoid the heat of the day. This behavior is called being:
A.Diurnal
B.Nocturnal
C.Hibernating
D.Migrating
- 5.
Why do many desert plants have shallow, wide-reaching root systems?
A.To reach deep underground water tables
B.To quickly absorb water from infrequent rain showers before it evaporates
C.To anchor the plant against strong desert sandstorms
D.To store food away from underground herbivores
- 6.
If two different species belong to the same Family, they must also belong to the same:
A.Genus
B.Order
C.Species
D.Subspecies
- 7.
Which of the following describes the function of 'warning coloration' (aposematism) in animals like poison dart frogs?
A.To help them blend in with colorful flowers
B.To signal to predators that they are toxic or dangerous
C.To attract more sunlight to keep their skin warm
D.To help them find other members of their species in the dark
- 8.
Which of the following is the best example of a 'Structural' adaptation for a predator?
A.A pack of wolves hunting together to take down large prey
B.The sharp, curved talons of an eagle for gripping slippery fish
C.An owl being active only at night to avoid competition
D.A snake slowing its metabolism during the winter months
- 9.
What is the primary difference between 'Natural Selection' and 'Artificial Selection'?
A.Natural selection happens faster than artificial selection
B.Natural selection is driven by environmental pressures, while humans drive artificial selection
C.Artificial selection only happens in plants, not animals
D.Natural selection always results in better adaptations for the organism's survival
- 10.
A plant has a thick waxy cuticle and leaves reduced to needles. In which biome is this adaptation most likely to provide the greatest survival advantage?
A.Tropical Rainforest
B.Temperate Grassland
C.Boreal Forest (Taiga) or Desert
D.Freshwater Marsh
Download the worksheet for Classification and Diversity - Adaptations and Survival to practice offline. It includes additional chapter-level practice questions.