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AQA GCSE Biology Unit 2.6

Matthew T 20 Fragen

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Fragen in diesem Quiz (20)

  1. 1How many years ago do most scientists believe life on Earth began?
    1. A3 thousand (3 * 10^3)
    2. B3 million (3 * 10^6)
    3. C3 billion (3 * 10^9)
  2. 2Which of these are methods of fossilisation?
    1. AAnoxic or hypoxic conditions in animal decay
    2. BPresence of bacteria in animal decay
    3. CPreservation of the bones, teeth, shells or claws of an animal
    4. DPreservation of rootlets, burrows, footprints and droppings
    5. EHaving an animal die between two rocks
    6. FPreservation in ice preventing decay
    7. GAnimals dying due to disasters such as volcanoes
    8. HMineralisation of body parts
  3. 3True or false? The skeletons of animals must be covered in sediment before they can be fossilised.
    1. ARichtig
    2. BFalsch
  4. 4True or false? Mineralisation (turning of the skeleton to rock) occurs in the presence of oxygen and over a short period of time.
    1. ARichtig
    2. BFalsch
  5. 5Which of these are reasons why the fossil record is incomplete?
    1. ANineteenth-century scientists didn't realise the value of fossils so they were discarded during geological experiments
    2. BMost early organisms had soft bodies which didn't fossilise well
    3. CAnimals decayed more easily due to higher numbers of bacteria, leading to fewer fossilisations
    4. DGeological activity such as erosion and melting of rock has destroyed many fossils
  6. 6True or false? The shark's fossils look very similar to the modern animal due to its adaptations being perfect for its environment.
    1. ARichtig
    2. BFalsch
  7. 7The earliest ancestor of the modern horse, Equus, is believed to be Hyracotherium. Equus has only one toe in its forefeet, but Hyracotherium has four. What can we learn from this fossil evidence?
    1. AThat Hyracotherium was better adapted to eating insects than grass
    2. BThat Hyracotherium was better adapted to walking on soft ground, rather than running on hard ground
    3. CThat Hyracotherium died out with the dinosaurs 65mya
  8. 8What is extinction?
    1. AThe forcible removal of an animal from its natural habitat
    2. BA cull enforced by a government, such as the British badger cull
    3. CThe permanent loss of all members from a species
  9. 9What type of extinction-causing organism is the grey squirrel in the UK?
    1. AA new predator
    2. BA new disease
    3. CA new competitor
  10. 10True or false? Hedgehogs were introduced to North Uist to remove garden slugs, but are eating the chicks of rare sea birds instead.
    1. ARichtig
    2. BFalsch

Informationen

Beschreibung
Twenty questions for the sixth section of Unit 2 in AQA GCSE Biology: Old and new species.
Sprache
English
Aufrufe
391
Schlagwörter
biologya-level
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