Advantages & Disadvantages of SE & ASE Reproduction

• What types of reproduction can some organisms use depending on circumstances?

  Both sexual and asexual reproduction
• Which organisms reproduce by sexual reproduction?

  Mammals and flowering plants
• Which organisms reproduce by asexual reproduction?

  Aphids and certain plants
• What are the advantages of sexual reproduction?

  • Produces genetic variation
  • Increases survival chances in changing environments
  • Aids in natural selection
• What are the disadvantages of sexual reproduction?

  • Requires two parents
  • Slower process than asexual reproduction
  • More energy and time-consuming
• What are the advantages of asexual reproduction?

  • Only one parent needed
  • More efficient in time and energy
  • Faster reproduction rate
• What are the disadvantages of asexual reproduction?

  • Offspring are genetically identical
  • Risk of total loss if conditions change
• How does sexual reproduction provide a survival advantage?

  It produces variation that aids survival
• Why is asexual reproduction faster than sexual reproduction?

  It requires only one parent
• When is asexual reproduction particularly useful?

  When conditions are favorable
• What happens to offspring produced asexually if conditions become unfavorable?

  All offspring may die due to identical genetics
• In which host does the malaria parasite reproduce asexually?

  In a human host
• In which host does the malaria parasite reproduce sexually?

  In a mosquito vector
• How do many species of fungi reproduce asexually?

  By producing spores
• How do flowering plants reproduce?

  They can reproduce sexually and asexually
• How does a strawberry plant reproduce asexually?

  By sending out runners
• How do daffodils reproduce asexually?

  By bulb division
• Compare sexual and asexual reproduction in terms of efficiency and genetic variation.

  • Sexual reproduction:
  • Requires two parents
  • Produces genetic variation
  • Asexual reproduction:
  • Requires one parent
  • Produces genetically identical offspring
• Why would fungi reproduce sexually?

  To give variation
• An unfavourable environmental change affects a population of organisms.

  Explain why sexual reproduction increases the chance of the population surviving.

  • It creates genetic variation in the offspring
  • Variation means it's likely that some individuals in the population will have a new gene that makes them better adapted to survive in the new environment
  • Individuals with this gene are more likely to survive and breed successfully
  • They can pass on the gene to future generations, which will allow them to survive in that environment