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B3 Quiz

Leah Firmstone 11 preguntas

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Preguntas del test (11)

  1. 1What is a species?
    1. AA group of organisms that can breed together to produce fertile offspring.
    2. BA group of similar organisms.
    3. CThe environment in which an organism lives.
  2. 2It is not just the environment that affects the chances of a [blank_start]organism[blank_end] surviving. Organisms are also dependant on other [blank_start]species[blank_end] for their survival. They may depend on other species for food or for their habitat. Many species of insect, for example, have habitats within or on particular [blank_start]plants[blank_end].
    In a particular habitat there will be competition between species for resources. [blank_start]Animals[blank_end] may compete for breeding sites or territories, food, mates or living space. Plants may compete for space, [blank_start]light[blank_end], nutrients and water.
    A food web shows the feeding [blank_start]interactions[blank_end] of some of the species within a habitat. Because species depend on each other in many ways, any impact on one species within a food web will have a [blank_start]knock-on effect[blank_end] on many of the other species that are part of the same food web. Food webs are extremely useful because they give us a visual representation of [blank_start]interdependence[blank_end].
    1. Aorganism
    2. Bspecies
    3. Cplants
    4. DAnimals
    5. Elight
    6. Finteractions
    7. Ginterdependence
    8. Hknock-on effect
  3. 3Using the diagram, choose the correct equation for photosynthesis.Imagen de la pregunta 3
    1. Acarbon dioxide + water (+sunlight) -> glucose + oxygen
    2. Boxygen + water (+sunlight) -> glucose + carbon dioxide
    3. Cglucose + oxygen -> carbon dioxide + water (+sunlight)
  4. 4The efficiency of transfer of energy at each level of a food chain is the ratio of the energy available in the organism's tissues to the total amount of energy the organism has ingested.
    percentage efficiency = (energy in tissues/energy in food eaten) x 100
    1. AVerdadero
    2. BFalso
  5. 5Complete the diagram of the carbon cycle.Imagen de la pregunta 5
    1. Adecay by fungi and bacteria
    2. Brespiration
    3. Cdead remains of plants and animals
    4. Dgreen plants are eaten by animals
    5. ECO2 added through combustion
  6. 6Complete the diagram of the nitrogen cycle.Imagen de la pregunta 6
    1. ANitrogen gas in the atmoshpere
    2. BNitrogen-fixing bacteria in plant roots
    3. CNitrogen-fixing bacteria in soil
    4. DAmmonium
    5. ENitrates
    6. FDenitrifying bacteria
    7. GDetrivores
    8. HDecomposition
    9. IAmino acids/proteins in plants & animals
  7. 7What are examples of non-living indicators?
    1. Amayflies
    2. Bcarbon doixide levels
    3. Ctemperature
    4. Dphytoplankton
  8. 8Organisms can be [blank_start]classified[blank_end] in many different ways. In the past, organisms were classified mainly by their [blank_start]appearance[blank_end]. Today, we have a much more [blank_start]accurate[blank_end] way of classifying organisms, based on their DNA [blank_start]sequences[blank_end]. Organisms with more similar DNA are likely to be more [blank_start]similar[blank_end] species. Classifying organisms in this way helps us to see how they [blank_start]evolved[blank_end]. A [blank_start]common[blank_end] ancestor is the most recent individual from which all organisms in a group are descended. Organisms with the most similar DNA have more [blank_start]recent[blank_end] common ancestors than those with [blank_start]less[blank_end] similar DNA.
    1. Aclassified
    2. Bappearance
    3. Caccurate
    4. Dsequences
    5. Esimilar
    6. Fevolved
    7. Gcommon
    8. Hrecent
    9. Iless
  9. 9Biodiversity is the word used to describe the variety of living things in a habitat.
    1. AVerdadero
    2. BFalso
  10. 10Define 'Sustainability'.
    1. AFinding a way to meet our needs now without stopping future generations from meeting their needs.
    2. BUsing renewable resources.

Información

Descripción
GCSE (B3 - Life on Earth) Biology Test sobre B3 Quiz, creado por Leah Firmstone el 31/10/2015.
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