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Reproduction: Asexual vs. Sexual

Learn about the importance of reproduction for all living species and understand the differences between asexual and sexual reproduction. Explore the advantages and disadvantages of each type and discover various examples of asexual reproduction.

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Reproduction: Asexual vs. Sexual

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  1. Reproduction: Asexual vs. Sexual

  2. Reproduction is important for the survival of all living species.

  3. Without a way to reproduce, life would come to an end.

  4. Two types of reproduction:

  5. Asexual reproduction involves only oneparent & results in an exact duplicate of an organism.

  6. There are many types of asexual reproduction. (budding, binary fission, fragmentation, regeneration, spores, cloning, etc…)

  7. Sexual reproduction involves the joining of male & female sex cells, called gametes.

  8. The male’s sperm & female’s egg are joined in a process called fertilization & results in the production of a zygote.

  9. Advantages & disadvantages of each type of reproduction:

  10. Asexual Reproduction

  11. 1. Asexual reproduction is common among plants, single-celled organisms & simple animals.

  12. 2. Asexual reproduction requires only one parent.

  13. 3. Asexual reproduction has the advantage of producing large numbers of offspring very quickly.

  14. 4. The offspring produced by asexual reproduction, from the same parent, are identical to one another & they are identical to the parent (clones) which prevents adaptations from occurring.

  15. 5. If a species of organism shows no variation & cannot adapt it may become extinct.

  16. Sexual reproduction

  17. 1. Sexual reproduction is common among higher animals & flowering plants.

  18. 2. Sexual reproduction requires sex cells produced by two parents. (sperm from males & eggs from females)

  19. 3. Sexual reproduction is more complex & slower than asexual reproduction.

  20. 4. The offspring produced by sexual reproduction have genetic variation. They may look like their parents, but they are not identical.

  21. 5. Amongst populations of wild animals & plants, individuals show variation as a result of sexual reproduction. This variation allows them to adapt to the environment.

  22. Examples of Asexual Reproduction:

  23. Spores: Ferns, mosses molds & mushrooms produce spores which are dispersed, then under favorable conditions a single spore develops into a new individual.

  24. Spores

  25. Binary fission: Amoebas, bacteria and other single-celled organisms divide to form two identical cells that become the same size.

  26. Binary fission

  27. Budding: Some bacteria, plants, fungi, yeast, sponges, corals and hydras form new organisms when part of the parent breaks off to form a daughter cell that grows into a new individual that is identical to the parent.

  28. Budding

  29. Runners: Potatoes, strawberries, some grasses and other plants can form horizontal stems that grow on top of or just below the ground which can produce new plants horizontally at nodes or tips along the stem.

  30. Runners

  31. Fragmentation: Some plants, planarian and other worms can be split into many fragments that each grow into new identical individuals.

  32. Fragmentation

  33. Regeneration: Type of fragmentation in which starfish, lizards & sponges can grow back body parts that are damaged or lost.

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