Classification of Living Things
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The Five Kingdoms
SubtopicThe Five Kingdoms under Classification of Living Things for Grade 6 IB.
Preview questions (no answers)
- 1.
Which kingdom includes organisms like the Venus flytrap, which catches insects but still makes its own food?
A.Animalia
B.Plantae
C.Protista
D.Fungi
- 2.
Which of these is a prokaryotic kingdom?
A.Fungi
B.Animalia
C.Monera
D.Protista
- 3.
A pine tree is a member of which kingdom?
A.Plantae
B.Fungi
C.Animalia
D.Monera
- 4.
Which kingdom contains organisms that are eukaryotic, multicellular, and obtain food by ingestion?
A.Monera
B.Protista
C.Plantae
D.Animalia
- 5.
Which of these represents the correct order of the 5 Kingdoms from simplest cell structure to most complex?
A.Monera, Protista, Fungi, Plantae, Animalia
B.Animalia, Plantae, Fungi, Protista, Monera
C.Monera, Fungi, Protista, Animalia, Plantae
D.Protista, Monera, Fungi, Plantae, Animalia
- 6.
What is a major characteristic of Kingdom Fungi that separates it from Kingdom Animalia?
A.Fungi are prokaryotic
B.Fungi have cell walls
C.Fungi can move independently
D.Fungi produce seeds
- 7.
Which kingdom contains organisms that are eukaryotic, unicellular or multicellular, and can be either autotrophic or heterotrophic?
A.Kingdom Monera
B.Kingdom Animalia
C.Kingdom Protista
D.Kingdom Fungi
- 8.
A biologist is studying 'Volvox', a genus of green algae that forms spherical colonies of thousands of eukaryotic cells. Although it appears to be a single complex organism, every cell in the colony is nearly identical and can perform all necessary life functions independently. Based on the classification logic in the provided flowchart, why is Volvox placed in Kingdom Protista rather than Kingdom Plantae?
A.Because its cells lack a nucleus and other membrane-bound organelles.
B.Because it produces its own food using energy from sunlight through photosynthesis.
C.Because it lacks specialized tissues and a division of labor between its cells.
D.Because its cell walls are composed of chitin rather than cellulose.
- 9.
Which kingdom includes organisms like bread mold, penicillium, and puffballs?
A.Plantae
B.Monera
C.Fungi
D.Protista
- 10.
A micro-organism is seen swimming in pond water using tiny hair-like projections called cilia. It has a nucleus but no chloroplasts. Which kingdom does it belong to?
A.Monera
B.Protista
C.Fungi
D.Animalia
Download the worksheet for Classification of Living Things - The Five Kingdoms to practice offline. It includes additional chapter-level practice questions.
Linnaean Taxonomy
SubtopicLinnaean Taxonomy under Classification of Living Things for Grade 6 IB.
Preview questions (no answers)
- 1.
Which kingdom contains only organisms that lack a nucleus (prokaryotes)?
A.Monera (Bacteria)
B.Protista
C.Fungi
D.Plantae
- 2.
Which of the following is a multicellular autotroph?
A.A mushroom
B.A tiger
C.An oak tree
D.An amoeba
- 3.
A group of similar genera (plural of genus) is classified into the same:
A.Order
B.Species
C.Family
D.Phylum
- 4.
Which of these levels is more specific than 'Class' but broader than 'Family'?
A.Phylum
B.Order
C.Genus
D.Kingdom
- 5.
Which kingdom contains organisms like bread mold and mushrooms?
A.Plantae
B.Protista
C.Archaea
D.Fungi
- 6.
Which of the following is NOT a reason for classifying living things?
A.To identify newly discovered organisms
B.To see how different groups are related
C.To make it easier to communicate about organisms
D.To find out which animals are the smartest
- 7.
Which group of vertebrates is known for having hollow bones and laying hard-shelled eggs?
A.Mammals
B.Reptiles
C.Birds
D.Fish
- 8.
In a classification hierarchy, which relationship is true regarding the number of organisms and their similarities?
A.Phylum has more organisms and more similarities than Class.
B.Kingdom has more organisms and fewer similarities than Genus.
C.Species has fewer organisms and fewer similarities than Family.
D.Order has fewer organisms and fewer similarities than Class.
- 9.
Why is the level 'Kingdom Protista' often called a 'catch-all' kingdom by scientists?
A.Because it contains only organisms that are extinct.
B.Because it contains eukaryotic organisms that do not fit neatly into the plant, animal, or fungi kingdoms.
C.Because it contains only the largest organisms on Earth.
D.Because every organism in it can also be classified as a mineral.
- 10.
Which level of classification serves as the basis for the first part of an organism's scientific name?
A.Family
B.Order
C.Genus
D.Species
Download the worksheet for Classification of Living Things - Linnaean Taxonomy to practice offline. It includes additional chapter-level practice questions.
Dichotomous Keys
SubtopicDichotomous Keys under Classification of Living Things for Grade 6 IB.
Preview questions (no answers)
- 1.
If you have a specimen that has feathers and can fly, and the key says: '1a. Has feathers... go to 2. 1b. No feathers... go to 5.' What is your next step?
A.Go to step 5
B.Go to step 2
C.Start over at the beginning
D.Identify it as a bat
- 2.
What is the main reason scientists use scientific names instead of common names at the end of a key?
A.To make identification harder for non-scientists
B.To ensure everyone globally refers to the same organism clearly
C.Because scientific names are always shorter
D.To show which scientist discovered the animal
- 3.
A key for identifying insects might ask about 'venation.' What is venation?
A.The number of eyes
B.The pattern of veins in the wings
C.The type of food the insect eats
D.The sound the insect makes
- 4.
Which of these is a good rule to follow when using a dichotomous key?
A.Always read both choices in a couplet before deciding
B.Always pick the first choice to save time
C.Skip any steps that seem too difficult
D.Only use the key for animals you already know
- 5.
What is the final goal of using a dichotomous key in biological studies?
A.To measure the weight of an organism accurately.
B.To correctly identify and name an unknown organism.
C.To find out what the organism eats.
D.To determine the exact age of the organism.
- 6.
Which of the following would be the most effective couplet to separate a 'Frog' from a 'Lizard'?
A.1a. Lives near water; 1b. Lives in the desert
B.1a. Has scales; 1b. Lacks scales (moist skin)
C.1a. Can jump; 1b. Can crawl
D.1a. Is green; 1b. Is brown
- 7.
In a dichotomous key for leaves, the term 'serrated' refers to which feature?
A.The color of the leaf veins
B.The presence of a waxy coating
C.A saw-like or jagged edge of the leaf
D.The length of the leaf stem
- 8.
In the context of the IB curriculum, why is it important for a dichotomous key to use 'objective' rather than 'subjective' traits?
A.Subjective traits make the key more interesting to read
B.Objective traits allow different scientists to reach the same conclusion
C.Objective traits are easier to spell
D.Subjective traits are only used for plants, not animals
- 9.
When identifying a mollusk, the key asks: 'Is the foot modified into tentacles?' Answering 'Yes' would likely lead to identifying which animal?
A.Snail
B.Oyster
C.Octopus
D.Slugs
- 10.
A student finds a plant that does not produce seeds but has a system of tubes to transport water. Which path in the dichotomous key should they follow?
A.Non-vascular -> Mosses
B.Vascular -> Spore-producing -> Ferns
C.Vascular -> Seed-producing -> Gymnosperms
D.Non-vascular -> Algae
Download the worksheet for Classification of Living Things - Dichotomous Keys to practice offline. It includes additional chapter-level practice questions.
Vertebrates and Invertebrates
SubtopicVertebrates and Invertebrates under Classification of Living Things for Grade 6 IB.
Preview questions (no answers)
- 1.
Why do scientists use classification systems for living things?
A.To make animals grow faster
B.To organize and easily identify different species
C.To count how many animals are in the world
D.To decide which animals are the most beautiful
- 2.
Most vertebrates show a body plan where the left and right sides are mirror images. This is called:
A.Radial symmetry
B.Bilateral symmetry
C.Asymmetry
D.Spherical symmetry
- 3.
Mammals generally have a higher chance of offspring survival because:
A.They lay thousands of eggs
B.They provide care and milk for their young
C.They can change color
D.They do not need to eat
- 4.
Corals are stationary underwater organisms that catch food with tiny tentacles. They are classified as:
A.Plants
B.Animals (Invertebrates)
C.Rocks
D.Fungi
- 5.
Bat wings are made of skin stretched over elongated finger bones. Why are bats classified as mammals rather than birds?
A.They can fly
B.They have hair and produce milk for their young
C.They are cold-blooded
D.They have a beak and feathers
- 6.
How do reptiles primarily prevent their bodies from drying out in hot, dry environments?
A.By living in burrows all day
B.By having thick, scaly skin
C.By drinking large amounts of water
D.By secreting a slimy mucus
- 7.
Which group of invertebrates has a soft body that is often protected by one or two hard shells made of calcium carbonate?
A.Crustaceans
B.Bivalves
C.Echinoderms
D.Annelids
- 8.
If an animal has a 'Water Vascular System,' what is its most likely method of gas exchange and locomotion?
A.Using hydraulic pressure to extend tube feet and exchange gases across the tube feet surface.
B.Using a muscular foot to slide and lungs to breathe air.
C.Using jointed appendages to walk and book lungs to breathe.
D.Using a system of air tubes (tracheae) and pulsating wings.
- 9.
Which of the following best describes 'Cutaneous Respiration'?
A.The exchange of gases through the skin, common in many amphibians.
B.The process of breathing using specialized air sacs in birds.
C.The way fish extract oxygen from water using their gills.
D.The method insects use to pump air into their tracheal tubes.
- 10.
In the classification of Arthropods, which feature is unique to the subphylum Chelicerata (including spiders and scorpions)?
A.The absence of antennae and the presence of specialized feeding appendages called chelicerae.
B.The presence of three pairs of legs and a thorax used for locomotion.
C.A body divided into many identical segments, each with two pairs of legs.
D.The use of gills for underwater breathing and two pairs of antennae.
Download the worksheet for Classification of Living Things - Vertebrates and Invertebrates to practice offline. It includes additional chapter-level practice questions.