Dinosaurs & Prehistoric Life · Unit 9
Dinosaurs and Birds
Feathers, Archaeopteryx and the dinosaurs still alive today
That birds are dinosaurs is not a metaphor or a loose analogy. It is a statement about descent, supported by anatomy, feathers and a long series of transitional fossils.
The unit covers the theropod lineage, feathered dinosaurs, Archaeopteryx, the origin of flight, and what it means to say the group survived.
This unit breaks down into 18 short steps and 107 questions, starting at difficulty 2 and building to 4. Below you can see exactly what it covers, how the path is structured, and worked examples with explanations.
- Steps
- 18
- Questions
- 107
- Difficulty
- 2-4
What this unit covers
- The Origin of Flight
- The Theropod Line
- Archaeopteryx
- Feathered Dinosaurs
- Birds Are Dinosaurs
Where this fits
Best after Dinosaur Family Groups. Connects to the Birds unit in Animals and Nature.
Where people slip
Feathers evolved before flight and on animals that could not fly. Insulation and display came first, and flight was a later use of an existing structure.
How the unit is structured
Dinosaurs and Birds runs as 18 short steps that unlock in order. 13 are practice rounds and 5 are challenge rounds that pull together everything before them. Questions start at difficulty 2 and climb to 4 as you progress.
Challenge rounds
Example questions
30 real questions from this unit, with the answer and the reason behind it, grouped by what they practise. There are 107 in the unit altogether.
Archaeopteryx
- Fact or fibLevel 2
1. More than ten Archaeopteryx specimens have now been found.
Answer: True
True, and each has added new details.
- Fill the blankLevel 2
2. A fossil showing features of two groups is called a ____ fossil.
- transitionalcorrect
- tropical
- terrible
- temporary
Transitional fossils bridge groups on the family tree.
- Multiple choiceLevel 2
3. Why is Archaeopteryx so famous?
- It mixes bird and dinosaur featurescorrect
- It was the biggest dinosaur
- It was the last dinosaur
- It lived in the ice age
It combines bird features like feathers and wings with dinosaur features like teeth and a bony tail.
- True or falseLevel 2
4. Archaeopteryx lived about 150 million years ago, in the Jurassic.
Answer: True
True. Its fossils come from the Solnhofen limestone of Germany.
- Type the answerLevel 2
5. Which famous fossil is often called the first bird?
Answer: Archaeopteryx
Archaeopteryx is the classic transitional fossil.
- Choose all that applyLevel 3
6. Which features of Archaeopteryx are dinosaur-like? Pick all that apply.
- Teeth in the jawscorrect
- A long bony tailcorrect
- Clawed fingers on the wingcorrect
- A toothless beak
Teeth, a long bony tail and clawed fingers are all dinosaurian.
Birds Are Dinosaurs
- Build the sentenceLevel 2
7. Build a sentence about birds today.
Answer: Birds are living dinosaurs today
Birds are the living descendants of dinosaurs.
- Multiple choiceLevel 2
8. Are birds dinosaurs?
- Yes, birds are living dinosaurs
- No, they are reptiles only
- No, they are mammals
- Only ostriches are
Yes. Scientists classify birds within the dinosaur family tree.
- Sort into groupsLevel 2
9. Sort each feature as found in modern birds or only in extinct dinosaurs.
Answer: Feathers = Modern birds; Wishbone = Modern birds; Teeth in the jaws = Extinct dinosaurs; Long bony tail = Extinct dinosaurs
Birds kept many dinosaur features and lost others.
- Choose all that applyLevel 3
10. Which fields contribute to the dinosaur-bird question? Pick all that apply.
- Palaeontologycorrect
- Developmental biologycorrect
- Biomechanicscorrect
- Astrology
Palaeontology, developmental biology, genetics and biomechanics all play a part.
- Fact or fibLevel 3
11. Saying birds are dinosaurs is a scientific classification, not a figure of speech.
Answer: True
True. It follows directly from how groups are defined by ancestry.
- Put in orderLevel 4
12. Put these stages of the dinosaur-to-bird story in order.
Answer: Simple feathers evolve -> Theropods shrink in size -> Gliding and flapping experiments -> Powered flight in early birds -> Modern birds survive the extinction
Feathers, then miniaturisation, then gliding, then powered flight, then the K-Pg survival of modern birds.
Feathered Dinosaurs
- Fact or fibLevel 2
13. All feathered dinosaurs could fly.
Answer: False
False. Most feathered dinosaurs were entirely flightless.
- Fill the blankLevel 2
14. Feathers help keep an animal ____ as well as helping some of them fly.
- warmcorrect
- wet
- heavy
- cold
Insulation was probably the first job feathers did.
- Multiple choiceLevel 2
15. Did any dinosaurs have feathers?
- Yes, many did
- No, none ever did
- Only the sauropods
- Only after they died
Yes. Many small meat-eating dinosaurs were covered in feathers.
- Picture questionLevel 2
16. 🪶 Which body covering links dinosaurs and birds?
- Featherscorrect
- Fur
- Scales only
- Shells
Feathers appear in both, because birds inherited them from dinosaurs.
- True or falseLevel 2
17. The earliest feathers looked more like simple hairs than like modern flight feathers.
Answer: True
True. They were thin filaments, which later became branched.
- Choose all that applyLevel 3
18. Which functions could feathers serve before flight? Pick all that apply.
- Insulationcorrect
- Display to mates or rivalscorrect
- Shading and brooding eggscorrect
- Breathing underwater
Insulation, display and shading eggs all work without flight.
The Origin of Flight
- Choose all that applyLevel 2
19. Which features help birds fly? Pick all that apply.
- Lightweight hollow bonescorrect
- Powerful chest musclescorrect
- Aerofoil-shaped featherscorrect
- Heavy solid bones
Light bones, strong chest muscles and shaped feathers all matter.
- Fill the blankLevel 2
20. Powerful flight muscles in birds attach to a large chest bone called the ____.
- keelcorrect
- skull
- pelvis
- jaw
The keel gives flight muscles a big anchor.
- Multiple choiceLevel 2
21. What shape are flight feathers?
- Uneven, narrower on one side
- Perfectly symmetrical
- Round like a coin
- Square
They are asymmetric, with a narrow leading edge, which helps them work as an aerofoil.
- True or falseLevel 2
22. Flight probably developed step by step from gliding, flapping and running up slopes.
Answer: True
True. Several stages likely came before full powered flight.
- Type the answerLevel 2
23. What do we call flight where an animal glides without flapping?
Answer: gliding
Gliding uses height and air rather than muscle power.
- Put in orderLevel 3
24. Put these proposed stages towards flight in order.
Answer: Simple insulating filaments -> Longer display feathers -> Gliding or parachuting surfaces -> Powered flapping flight
Insulating fuzz, then longer display feathers, then gliding surfaces, then powered flapping.
The Theropod Line
- Fact or fibLevel 2
25. One small dinosaur was found curled up in a sleeping pose just like a modern bird.
Answer: True
True. Mei long was preserved with its head tucked under its arm.
- Match the pairsLevel 2
26. Match each feature to what it shows.
Answer: Wishbone = Shared with theropods; Beak with no teeth = Modern bird feature; Long bony tail = Ancient dinosaur feature
Shared features are the evidence for shared ancestry.
- Multiple choiceLevel 2
27. Which dinosaur group did birds evolve from?
- Theropodscorrect
- Sauropods
- Ceratopsians
- Stegosaurs
Birds are theropods, the same group as Tyrannosaurus and Velociraptor.
- True or falseLevel 2
28. Birds and theropod dinosaurs both walk on two legs with three main toes.
Answer: True
True. Bird footprints look strikingly like small theropod tracks.
- Choose all that applyLevel 3
29. Which features do birds share with maniraptoran dinosaurs? Pick all that apply.
- A wishbonecorrect
- A folding wristcorrect
- Featherscorrect
- A four-chambered shell
Wishbones, folding wrists, feathers and brooding behaviour are all shared.
- Fill the blankLevel 3
30. Birds and theropods both have air sacs connected to their ____.
- lungscorrect
- stomach
- eyes
- tail
Air sacs make breathing highly efficient.
Where these questions come from. Each unit starts as a plan of the concepts it should cover and the difficulty it should span. Questions are written against that plan with AI assistance, then checked by a validator that rejects anything without a single defensible answer, an explanation, or plausible wrong options. How we write questions sets out the whole process, and corrections are fixed in the bank and reach the site and the app the same day.
How you practise
This unit mixes 11 different question formats, so you are recalling and applying rather than recognising the same layout every time.
- Build the sentence
- Choose all that apply
- Fact or fib
- Fill the blank
- Match the pairs
- Multiple choice
- Picture question
- Put in order
- Sort into groups
- True or false
- Type the answer
Practise Dinosaurs and Birds
107 questions across 18 steps. Start with step one and crawl at your own pace.
Play this unitRead about Dinosaurs and Birds
Explainers from our blog on what this unit covers. Each one ends with real questions from the bank.
- How Did Birds Evolve From Dinosaurs?The fossil evidence, the shared anatomy, and how flight developed in a group of small feathered theropods.August 28, 2026 · 6 min read
- Did Dinosaurs Have Feathers?What the fossil evidence shows, which dinosaurs were feathered, and how the discovery changed how we picture them.August 28, 2026 · 6 min read
- What Were the Terror Birds? Three-Metre Predators That Ran Down South AmericaFor fifty million years the top predators of South America were flightless birds up to three metres tall with axe-shaped beaks. Why they vanished.September 15, 2026 · 4 min read
More units in Dinosaurs & Prehistoric Life
- What Is a Dinosaur?What dinosaurs were, when they lived and how we name them
- Famous DinosaursTyrannosaurus, Triceratops, Stegosaurus and the other stars
- Meat Eaters and Plant EatersTeeth, claws, defences and what dinosaurs ate
- Fossils and Fossil HuntingWhat fossils are, how they form and how they are found
- The Age of DinosaursTriassic, Jurassic and Cretaceous, and how deep time works
- Eggs, Nests and Growing UpDinosaur eggs, nests, babies and family life
- Flying and Swimming ReptilesPterosaurs, plesiosaurs and the sea monsters that were not dinosaurs
- The Great ExtinctionThe asteroid, the volcanoes and who survived