Biology Environment and Evolution

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1. How many chromosomes do Gametes have?

  • 23. Half the number of a normal cell.
  • None because they don't make chromosomes until they have fused with another cell.
  • 46. 23 Pairs of Chromomes.
  • 32. One and a half the number of a normal cell
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2. In what ways have arctic animals adapted to reduce heat loss?

  • Small surface area compared to volume, efficient with water, Camouflage
  • Small surface area compared to volume, well insulated, camouflage
  • Large surface area compared to volume, well insulated, camouflage
  • Small Surface area compared to volume, good in cold conditions, efficient with water

3. How do plants and animals deter predators?

  • Some plants and animals have armor, others produces poisons, some have warning colours
  • Some plants and animals have armor, others produces food, some have warning colours
  • Some plants and animals have shielding, others produces poisons, some have warning colours
  • Some plants and animals have expandable shells, others produces poisons, some have warning colours

4. How are desert animals adapted to their conditions? (4 things)

  • Large Surface Area compared to volume, efficient with water, good in wet conditions, camouflage
  • Large Surface Area compared to volume, efficient with water, good in hot conditions, release poisons
  • Large Surface Area compared to volume, efficient with water, good in hot conditions, camouflage
  • Small Surface Area compared to volume, efficient with water, good in hot conditions, camouflage

5. What are non living indicators, can you give an example?

  • An example of a non living indicator is a thermometer, which measures the temperature of the sea surface.
  • An example of a non living indicator is a satellite, which measures the amount of rainfall
  • An example of a non living indicator is a satellite, which measures the temperature of the sea surface.
  • An example of a non living indicator is a lichen, which measures the temperature of the sea surface.

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